阅读说明：本技术 基于口腔扫描模型的隐形正畸进展监测方法、系统及装置 (Invisible orthodontic progress monitoring method, system and device based on oral scanning model ) 是由 胡敏 贾一凡 毛智 包幸福 姜欢 张祎 魏晓曦 齐慧川 于东升 高尚 李雨桐 于 2021-09-06 设计创作，主要内容包括：本发明提供一种基于口腔扫描模型的隐形正畸进展监测方法、系统及装置,属于口腔医学技术领域,监测方法包括：初诊时获取患者的颅面影像并进行口腔扫描,确定初诊各牙齿模型及初诊牙龈牙槽骨模型,以及各牙齿的初始位置和初始矫正方案；第n次复诊时,对患者进行口腔扫描,确定本次复诊牙冠模型和牙龈模型；根据上次复诊各牙齿模型和本次复诊牙冠模型,得到本次复诊各牙齿模型；根据上次复诊牙龈牙槽骨模型及本次复诊牙龈模型,得到本次复诊牙龈牙槽骨模型,进而确定矫正后各牙齿的位置,得到各牙齿的位置变化情况以及与预期位置的偏差,修正矫正方案。仅在初诊时对患者拍摄颅内影像,降低了成本,提高了复诊时监测治疗进展的自动化。(The invention provides a method, a system and a device for monitoring invisible orthodontic progress based on an oral scanning model, belonging to the technical field of oral medicine, wherein the monitoring method comprises the following steps: acquiring a craniofacial image of a patient during initial diagnosis, carrying out oral cavity scanning, and determining each tooth model and each gingival alveolar bone model for initial diagnosis, and the initial position and the initial correction scheme of each tooth; during the nth re-diagnosis, the oral cavity of the patient is scanned, and a dental crown model and a gum model of the re-diagnosis are determined; obtaining each tooth model of the re-diagnosis according to each tooth model of the re-diagnosis at the last time and the dental crown model of the re-diagnosis at the current time; and obtaining the gingival alveolar bone model of the present re-diagnosis according to the gingival alveolar bone model of the previous re-diagnosis and the gingival model of the present re-diagnosis, further determining the position of each tooth after correction, obtaining the position change condition of each tooth and the deviation from the expected position, and correcting the correction scheme. Only in the initial diagnosis, the intracranial image is shot for the patient, so that the cost is reduced, and the automation of monitoring the treatment progress in the re-diagnosis is improved.)

1. A method for monitoring the treatment progress of an invisible orthodontic patient based on an oral cavity scanning model is characterized by comprising the following steps of:

during initial diagnosis, an electronic computer tomography CT or oral cavity maxillofacial cone beam CBCT is shot for a patient and oral cavity scanning is carried out to obtain a craniofacial image and an oral cavity scanning result;

determining each tooth model and the gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part;

determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis;

during the nth re-diagnosis, the oral cavity of the patient is scanned, and a dental crown model and a gingival model for the nth re-diagnosis are determined, wherein n is more than or equal to 1;

obtaining each tooth model of the nth repeated diagnosis according to each tooth model of the nth-1 repeated diagnosis and the dental crown model of the nth repeated diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

obtaining a gingival alveolar bone model for the nth re-examination according to the gingival alveolar bone model for the (n-1) th re-examination and the gingival model for the nth re-examination; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

obtaining the position of each tooth during the nth repeated diagnosis according to each tooth model of the nth repeated diagnosis and the gingival alveolar bone model of the nth repeated diagnosis;

obtaining the actual position change condition of each tooth in the nth repeated diagnosis and the deviation from the expected position in the nth repeated diagnosis in the correction scheme according to the position of each tooth in the nth repeated diagnosis and the position of each tooth in the nth repeated diagnosis in the correction scheme;

and correcting the correction scheme according to the deviation until the invisible orthodontics on the teeth of the patient are finished.

2. The method for monitoring the treatment progress of the orthodontic invisible patient based on the oral scanning model as claimed in claim 1, wherein the step of determining each tooth model and each gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral scanning result comprises the following steps:

determining a primary diagnosis dental root crown model and a primary diagnosis alveolar bone model according to the craniofacial image;

determining an initial diagnosis dental crown model and an initial diagnosis gingival model according to the oral cavity scanning result;

obtaining each tooth model for initial diagnosis according to the tooth crown model for initial diagnosis and the tooth crown model for initial diagnosis;

and registering and combining the initial examination alveolar bone model and the initial examination gingival model to obtain the initial examination gingival alveolar bone model.

3. The method for monitoring the treatment progress of the orthodontic patient based on the oral scanning model as claimed in claim 2, wherein the obtaining of each tooth model for initial diagnosis according to the dental crown model for initial diagnosis and the dental crown model for initial diagnosis comprises:

registering the initial diagnosis dental root model and the initial diagnosis dental crown model to obtain a first registration relation;

segmenting the preliminary call root crown model into a root portion and a crown portion based on the first registration relationship;

and replacing the dental crown part with the initial diagnosis dental crown model to obtain each initial diagnosis dental model.

4. The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model is characterized in that each tooth model in the initial diagnosis is the position of each tooth in a three-dimensional coordinate system in the initial diagnosis; the tooth models of the n-1 th repeated diagnosis are the positions of the teeth of the n-1 th repeated diagnosis in the three-dimensional coordinate system;

the method for obtaining the tooth models of the nth repeated diagnosis according to the tooth models of the (n-1) th repeated diagnosis and the dental crown model of the nth repeated diagnosis specifically comprises the following steps:

registering each tooth model of the n-1 th repeated diagnosis and the crown model of the nth repeated diagnosis to obtain a second registration relation;

and replacing the three-dimensional coordinate system of each tooth model of the nth-1 repeated diagnosis with the three-dimensional coordinate system of each tooth model of the nth repeated diagnosis based on the second registration relation to obtain each tooth model of the nth repeated diagnosis.

5. The method for monitoring the treatment progress of the orthodontic patient based on the oral scanning model as claimed in claim 1, wherein the step of obtaining the gingival alveolar bone model of the nth re-examination according to the gingival alveolar bone model of the (n-1) th re-examination and the gingival model of the nth re-examination comprises:

registering the gum model of the nth re-examination and the gum alveolar bone model of the (n-1) th re-examination to obtain a third registration relation;

and replacing the gum part in the gum alveolar bone model of the (n-1) th re-diagnosis with the gum model of the nth re-diagnosis based on the third registration relation to obtain the gum alveolar bone model of the nth re-diagnosis.

6. The method for monitoring the treatment progress of the orthodontic patient based on the oral scanning model as claimed in claim 1, further comprising:

determining the nth repeated diagnosis occlusion relation between the upper dentition and the lower dentition according to the oral cavity scanning result in the nth repeated diagnosis;

and determining the total change condition of each tooth position in the nth repeated diagnosis according to each tooth model in the nth repeated diagnosis, the gingival alveolar bone model in the nth repeated diagnosis and the occlusion relation in the nth repeated diagnosis.

7. A system for monitoring treatment progress of an invisible orthodontic patient based on an oral cavity scanning model is characterized by comprising:

the initial diagnosis data acquisition unit is used for shooting CT or CBCT for the patient and carrying out oral scanning during initial diagnosis to obtain a craniofacial image and an oral scanning result;

the initial diagnosis model determining unit is connected with the initial diagnosis data acquiring unit and is used for determining each tooth model and each gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part;

the correction scheme determining unit is connected with the initial diagnosis model determining unit and is used for determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis;

the repeated-diagnosis oral cavity scanning unit is used for scanning the oral cavity of the patient during the nth repeated diagnosis, determining a dental crown model and a gingival model for the nth repeated diagnosis, wherein n is more than or equal to 1;

the re-diagnosis dental crown model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining each dental model of the n-th re-diagnosis according to each dental model of the n-1-th re-diagnosis and the dental crown model of the n-th re-diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

the re-diagnosis gingival alveolar bone model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining an nth re-diagnosis gingival alveolar bone model according to the (n-1) th re-diagnosis gingival alveolar bone model and the nth re-diagnosis gingival model; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

the orthodontic tooth position determining unit is respectively connected with the re-diagnosis dental crown model determining unit and the re-diagnosis gingival alveolar bone model determining unit and is used for obtaining the position of each tooth in the n-th re-diagnosis according to each tooth model in the n-th re-diagnosis and the gingival alveolar bone model in the n-th re-diagnosis;

the deviation determining unit is connected with the orthodontic tooth position determining unit and is used for obtaining the actual position change condition of each tooth in the nth time of the repeated diagnosis and the deviation from the expected position in the nth time of the repeated diagnosis in the orthodontic scheme according to the position of each tooth in the nth time of the repeated diagnosis and the position of each tooth in the nth time of the repeated diagnosis in the orthodontic scheme;

and the correction unit is respectively connected with the deviation determination unit and the correction scheme determination unit and is used for correcting the correction scheme according to the deviation until the invisible orthodontic treatment of the teeth of the patient is completed.

8. The system for monitoring the treatment progress of the orthodontic patient based on the oral scanning model as set forth in claim 7, wherein the preliminary model determining unit comprises:

the initial-diagnosis tooth alveolar bone model determining module is connected with the initial-diagnosis data acquiring unit and is used for determining an initial-diagnosis tooth root dental crown model and an initial-diagnosis alveolar bone model according to the craniofacial image;

the initial-diagnosis dental crown and gingival model determining module is connected with the initial-diagnosis data acquiring unit and is used for determining an initial-diagnosis dental crown model and an initial-diagnosis gingival model according to the oral cavity scanning result;

each tooth model determination module for initial diagnosis is respectively connected with the tooth socket bone model determination module for initial diagnosis and the tooth crown and gum model determination module for initial diagnosis, and is used for obtaining each tooth model for initial diagnosis according to the tooth crown model for initial diagnosis and the tooth crown model for initial diagnosis;

and the initial-diagnosis gingival alveolar bone model determining module is respectively connected with the initial-diagnosis tooth alveolar bone model determining module and the initial-diagnosis dental crown gingival model determining module, and is used for registering and combining the initial-diagnosis alveolar bone model and the initial-diagnosis gingival model to obtain the initial-diagnosis gingival alveolar bone model.

9. The system for monitoring the progress of orthodontic treatment on invisible orthodontic patients based on the oral scanning model as claimed in claim 8, wherein the preliminary each tooth model determination module comprises:

the registration sub-module is respectively connected with the initial diagnosis tooth alveolar bone model determining module and the initial diagnosis dental crown and gingival model determining module and is used for registering the initial diagnosis dental crown model and the initial diagnosis dental crown model to obtain a first registration relation;

a segmentation sub-module connected with the registration sub-module and used for segmenting the initial diagnosis tooth root and tooth crown tooth model into a tooth root part and a tooth crown part based on the first registration relation;

and the replacing sub-module is connected with the segmenting sub-module and is used for replacing the dental crown part with the initial diagnosis dental crown model to obtain each initial diagnosis dental model.

10. A device for monitoring the treatment progress of an invisible orthodontic patient based on an oral cavity scanning model is characterized by comprising: a memory, a processor, and a computer program stored on the memory and executed on the processor; the processor, when executing the computer program, implements the steps of:

during initial diagnosis, acquiring a craniofacial image of a patient and carrying out oral scanning;

determining each tooth model and the gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part;

determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis;

during the nth re-diagnosis, the oral cavity of the patient is scanned, and a dental crown model and a gingival model for the nth re-diagnosis are determined, wherein n is more than or equal to 1;

obtaining each tooth model of the nth repeated diagnosis according to each tooth model of the nth-1 repeated diagnosis and the dental crown model of the nth repeated diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

obtaining a gingival alveolar bone model for the nth re-examination according to the gingival alveolar bone model for the (n-1) th re-examination and the gingival model for the nth re-examination; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

obtaining the position of each tooth during the nth repeated diagnosis according to each tooth model of the nth repeated diagnosis and the gingival alveolar bone model of the nth repeated diagnosis;

obtaining the actual position change condition of each tooth in the nth re-diagnosis and the deviation from the expected position in the nth re-diagnosis in the correction scheme according to the position of each tooth in the nth re-diagnosis and the position of each tooth in the nth re-diagnosis in the re-diagnosis correction scheme;

and correcting the correction scheme according to the deviation until the invisible orthodontics on the teeth of the patient are finished.

Technical Field

The invention relates to the technical field of oral medicine, in particular to a method, a system and a device for monitoring invisible orthodontic progress based on an oral scanning model.

Background

Orthodontics is a medical action that an orthodontist moves teeth to adjust occlusion of a patient and improve the aesthetics of the lower part of the face of the patient.

With the social development and the technological progress, doctors and patients gradually tend to use bracket-free invisible orthodontic appliances for invisible orthodontics. For the emerging invisible orthodontics, how to monitor the progress of treatment during the patient's consultation is one of the major and difficult points facing the physician. Since the three-dimensional spatial relationship between the tooth root and the alveolar bone affects the safety and efficiency of tooth movement, although the conventional examination method has been one of the conventional examination methods in clinical practice, the CBCT (Cone beam Computed Tomography) or CT (computer Tomography) for the design of a solution for assisting invisible orthodontics, the radiation and cost of CT and CBCT are high, and it is impossible to perform an imaging examination on a patient at each double visit.

In addition, the high-precision dental crown and gum shapes of the patient are obtained through the non-radiation oral cavity scanning which is convenient and fast to operate, and further the personalized bracket-free invisible appliance is manufactured, which is one of the conventional diagnosis and treatment procedures. Therefore, the method has wide application prospect in monitoring the treatment progress of the invisible orthodontic patient in real time based on oral cavity scanning and combining the data of the tooth root and the alveolar bone of the patient acquired by CBCT or CT. However, the clinical popularization of this method still faces three difficulties: firstly, the position of teeth (including crowns and roots) in a three-dimensional space during the patient re-diagnosis can not be obtained according to CBCT or CT data and oral scanning data; the position of the tooth (including the crown and the root) in the three-dimensional space during the return visit can not be compared with the position of the tooth during the initial visit and the position of the tooth designed by the treatment scheme; and the automation degree of monitoring the progress of the invisible orthodontic treatment in real time is lower.

Therefore, there is a need for a method for monitoring treatment progress of a double-diagnosed invisible orthodontic patient in real time, which solves the above difficulties.

Disclosure of Invention

The invention aims to provide a method, a system and a device for monitoring the progress of invisible orthodontics based on an oral scanning model, which can automatically determine the change condition of each tooth position, the root-bone relationship of each tooth and the deviation from an expected position during a double-diagnosis, have no additional radiation injury to patients and have low cost.

In order to achieve the purpose, the invention provides the following scheme:

a method for monitoring treatment progress of an invisible orthodontic patient based on an oral cavity scanning model comprises the following steps:

during initial diagnosis, a patient is shot by CT or CBCT and oral cavity scanning is carried out to obtain a craniofacial image and an oral cavity scanning result;

determining each tooth model and the gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part;

determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis;

during the nth re-diagnosis, the oral cavity of the patient is scanned, and a dental crown model and a gingival model for the nth re-diagnosis are determined, wherein n is more than or equal to 1;

obtaining each tooth model of the nth repeated diagnosis according to each tooth model of the nth-1 repeated diagnosis and the dental crown model of the nth repeated diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

obtaining a gingival alveolar bone model for the nth re-examination according to the gingival alveolar bone model for the (n-1) th re-examination and the gingival model for the nth re-examination; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

obtaining the position of each tooth during the nth repeated diagnosis according to each tooth model of the nth repeated diagnosis and the gingival alveolar bone model of the nth repeated diagnosis;

obtaining the actual change situation of the position of each tooth in the nth repeated diagnosis and the deviation from the expected position in the nth repeated diagnosis in the correction scheme according to the position of each tooth in the nth repeated diagnosis and the position of each tooth in the nth repeated diagnosis in the correction scheme;

and correcting the correction scheme according to the deviation until the invisible orthodontics on the teeth of the patient are finished.

Optionally, the determining each tooth model and each gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result specifically includes:

determining a primary diagnosis dental root crown model and a primary diagnosis alveolar bone model according to the craniofacial image;

determining an initial diagnosis dental crown model and an initial diagnosis gingival model according to the oral cavity scanning result;

obtaining each tooth model for initial diagnosis according to the tooth crown model for initial diagnosis and the tooth crown model for initial diagnosis;

and registering and combining the initial examination alveolar bone model and the initial examination gingival model to obtain the initial examination gingival alveolar bone model.

Optionally, the obtaining each tooth model for initial diagnosis according to the tooth root model for initial diagnosis and the tooth crown model for initial diagnosis specifically includes:

registering the initial diagnosis dental root model and the initial diagnosis dental crown model to obtain a first registration relation;

segmenting the preliminary call root crown model into a root portion and a crown portion based on the first registration relationship;

and replacing the dental crown part with the initial diagnosis dental crown model to obtain each initial diagnosis dental model.

Optionally, each tooth model in the initial diagnosis is the position of each tooth in a three-dimensional coordinate system in the initial diagnosis; the tooth models of the n-1 th repeated diagnosis are the positions of the teeth of the n-1 th repeated diagnosis in the three-dimensional coordinate system;

the method for obtaining the tooth models of the nth repeated diagnosis according to the tooth models of the (n-1) th repeated diagnosis and the dental crown model of the nth repeated diagnosis specifically comprises the following steps:

registering each tooth model of the n-1 th repeated diagnosis and the crown model of the nth repeated diagnosis to obtain a second registration relation;

and replacing the three-dimensional coordinate system of each tooth model of the nth-1 repeated diagnosis with the three-dimensional coordinate system of each tooth model of the nth repeated diagnosis based on the second registration relation to obtain each tooth model of the nth repeated diagnosis.

Optionally, the obtaining of the gingival alveolar bone model of the nth re-examination according to the gingival alveolar bone model of the (n-1) th re-examination and the gingival model of the nth re-examination specifically includes:

registering the gum model of the nth re-examination and the gum alveolar bone model of the (n-1) th re-examination to obtain a third registration relation;

and replacing the gum part in the gum alveolar bone model of the (n-1) th re-diagnosis with the gum model of the nth re-diagnosis based on the third registration relation to obtain the gum alveolar bone model of the nth re-diagnosis.

Optionally, the method for monitoring the treatment progress of the orthodontic contact patient based on the oral scanning model further comprises:

determining the nth repeated diagnosis occlusion relation between the upper dentition and the lower dentition according to the oral cavity scanning result in the nth repeated diagnosis;

and determining the total change condition of each tooth position in the nth repeated diagnosis according to each tooth model in the nth repeated diagnosis, the gingival alveolar bone model in the nth repeated diagnosis and the occlusion relation in the nth repeated diagnosis.

In order to achieve the above purpose, the invention also provides the following scheme:

a system for monitoring treatment progress of an orthodontic invisible patient based on an oral cavity scanning model comprises:

the initial diagnosis data acquisition unit is used for shooting CT or CBCT for the patient and carrying out oral scanning during initial diagnosis to obtain a craniofacial image and an oral scanning result;

the initial diagnosis model determining unit is connected with the initial diagnosis data acquiring unit and is used for determining each tooth model and each gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part;

the correction scheme determining unit is connected with the initial diagnosis model determining unit and is used for determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis;

the repeated-diagnosis oral cavity scanning unit is used for scanning the oral cavity of the patient during the nth repeated diagnosis, determining a dental crown model and a gingival model for the nth repeated diagnosis, wherein n is more than or equal to 1;

the re-diagnosis dental crown model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining each dental model of the n-th re-diagnosis according to each dental model of the n-1-th re-diagnosis and the dental crown model of the n-th re-diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

the re-diagnosis gingival alveolar bone model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining an nth re-diagnosis gingival alveolar bone model according to the (n-1) th re-diagnosis gingival alveolar bone model and the nth re-diagnosis gingival model; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

the orthodontic tooth position determining unit is respectively connected with the re-diagnosis dental crown model determining unit and the re-diagnosis gingival alveolar bone model determining unit and is used for obtaining the position of each tooth in the n-th re-diagnosis according to each tooth model in the n-th re-diagnosis and the gingival alveolar bone model in the n-th re-diagnosis;

a deviation determining unit connected with the orthodontic tooth position determining unit and used for obtaining the actual position change condition of each tooth in the nth time of the repeated diagnosis and the deviation from the expected position in the nth time of the repeated diagnosis in the orthodontic scheme according to the position of each tooth in the nth time of the repeated diagnosis and the position of each tooth in the nth time of the repeated diagnosis in the orthodontic scheme;

and the correction unit is respectively connected with the deviation determination unit and the correction scheme determination unit and is used for correcting the correction scheme according to the deviation until the invisible orthodontic treatment of the teeth of the patient is completed.

Optionally, the preliminary diagnosis model determining unit includes:

the initial-diagnosis tooth alveolar bone model determining module is connected with the initial-diagnosis data acquiring unit and is used for determining an initial-diagnosis tooth root dental crown model and an initial-diagnosis alveolar bone model according to the craniofacial image;

the initial-diagnosis dental crown and gingival model determining module is connected with the initial-diagnosis data acquiring unit and is used for determining an initial-diagnosis dental crown model and an initial-diagnosis gingival model according to the oral cavity scanning result;

each tooth model determination module for initial diagnosis is respectively connected with the tooth socket bone model determination module for initial diagnosis and the tooth crown and gum model determination module for initial diagnosis, and is used for obtaining each tooth model for initial diagnosis according to the tooth crown model for initial diagnosis and the tooth crown model for initial diagnosis;

and the initial-diagnosis gingival alveolar bone model determining module is respectively connected with the initial-diagnosis tooth alveolar bone model determining module and the initial-diagnosis dental crown gingival model determining module, and is used for registering and combining the initial-diagnosis alveolar bone model and the initial-diagnosis gingival model to obtain the initial-diagnosis gingival alveolar bone model.

Optionally, the preliminary diagnosis tooth model determination module includes:

the registration sub-module is respectively connected with the initial diagnosis tooth alveolar bone model determining module and the initial diagnosis dental crown and gingival model determining module and is used for registering the initial diagnosis dental crown model and the initial diagnosis dental crown model to obtain a first registration relation;

a segmentation sub-module connected with the registration sub-module and used for segmenting the primary-diagnosis tooth root and tooth crown model into a tooth root part and a tooth crown part based on the first registration relation;

and the replacing sub-module is connected with the segmenting sub-module and is used for replacing the dental crown part with the initial diagnosis dental crown model to obtain each initial diagnosis dental model.

In order to achieve the above purpose, the invention also provides the following scheme:

a device for monitoring treatment progress of an orthodontic invisible patient based on an oral cavity scanning model comprises: a memory, a processor, and a computer program stored on the memory and executed on the processor; the processor, when executing the computer program, implements the steps of:

during initial diagnosis, a patient is shot by CT or CBCT and oral cavity scanning is carried out to obtain a craniofacial image and an oral cavity scanning result;

determining each tooth model and the gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part;

determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis;

during the nth re-diagnosis, the oral cavity of the patient is scanned, and a dental crown model and a gingival model for the nth re-diagnosis are determined, wherein n is more than or equal to 1;

obtaining each tooth model of the nth repeated diagnosis according to each tooth model of the nth-1 repeated diagnosis and the dental crown model of the nth repeated diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

obtaining a gingival alveolar bone model for the nth re-examination according to the gingival alveolar bone model for the (n-1) th re-examination and the gingival model for the nth re-examination; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

obtaining the positions of the teeth in the nth repeated diagnosis according to the tooth models in the nth repeated diagnosis and the gingival alveolar bone model in the nth repeated diagnosis;

obtaining the actual position change condition of each tooth in the nth repeated diagnosis and the deviation from the expected position in the nth repeated diagnosis in the correction scheme according to the position of each tooth in the nth repeated diagnosis and the position of each tooth in the nth repeated diagnosis in the correction scheme;

and correcting the correction scheme according to the deviation until the invisible orthodontics on the teeth of the patient are finished.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the craniofacial image is obtained and the oral cavity is scanned during initial examination, each tooth model and each alveolar bone model for initial examination are established, oral cavity scanning is only needed during re-examination, the cost is reduced, radiation to a patient is avoided, the change condition of each tooth, the root bone relation of each tooth and the deviation from an expected position can be determined according to each tooth model for initial examination, each alveolar bone model for initial examination and the result of oral cavity scanning for re-examination, and then the correction scheme and corresponding adjustment are corrected, so that the automation degree of monitoring the treatment progress during re-examination is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a flow chart of a method for monitoring treatment progress of an orthodontic patient based on an oral scanning model according to the invention;

fig. 2 is a schematic block structure diagram of the system for monitoring the treatment progress of the orthodontic patient based on the oral scanning model.

Description of the symbols:

the system comprises a preliminary diagnosis data acquisition unit-1, a preliminary diagnosis model determination unit-2, a preliminary diagnosis tooth alveolar bone model determination module-21, a preliminary diagnosis dental crown and gingival model determination module-22, a preliminary diagnosis tooth model determination module-23, a preliminary diagnosis dental alveolar bone model determination module-24, a correction scheme determination unit-3, a re-diagnosis oral cavity scanning unit-4, a re-diagnosis dental crown model determination unit-5, a re-diagnosis dental gingival alveolar bone model determination unit-6, a corrected tooth position determination unit-7, a deviation determination unit-8 and a correction unit-9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a method, a system and a device for monitoring the progress of invisible orthodontics based on an oral scanning model, which only need to shoot CT or CBCT during initial diagnosis, obtain a craniofacial image and perform oral scanning, establish each tooth model and each initial-diagnosis alveolar bone model, only need to perform oral scanning during each re-diagnosis, reduce the cost and avoid the radiation to a patient, and can determine the change condition of each tooth and the deviation from the expected position during the re-diagnosis according to each tooth model and each alveolar bone model during the last re-diagnosis and the re-diagnosis oral scanning result, thereby correcting a correction scheme and improving the automation of monitoring the progress of treatment during the re-diagnosis.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in figure 1, the method for monitoring the treatment progress of the invisible orthodontic patient based on the oral cavity scanning model comprises the following steps:

s1: during initial diagnosis, the patient is shot by CT or CBCT and oral cavity scanning is carried out to obtain craniofacial images and oral cavity scanning results.

S2: and determining each tooth model and the gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result. Each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part.

S3: and determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis.

S4: and during the nth re-diagnosis, carrying out oral scanning on the patient to determine the dental crown model and the gingival model for the nth re-diagnosis, wherein n is more than or equal to 1.

S5: and obtaining each tooth model of the nth repeated diagnosis according to each tooth model of the nth-1 repeated diagnosis and the dental crown model of the nth repeated diagnosis. The tooth models of the 0 th repeated diagnosis are the tooth models of the initial diagnosis.

S6: and obtaining the gingival alveolar bone model of the nth repeated examination according to the gingival alveolar bone model of the nth-1 repeated examination and the gingival model of the nth repeated examination. The 0 th re-examination gingival alveolar bone model is an initial examination gingival alveolar bone model.

S7: and obtaining the positions of the teeth in the nth repeated diagnosis according to the tooth models in the nth repeated diagnosis and the gingival alveolar bone model in the nth repeated diagnosis.

S8: and obtaining the actual position change condition of each tooth at the nth time of the repeated diagnosis and the deviation from the expected position at the nth time of the repeated diagnosis in the correction scheme according to the position of each tooth at the nth time of the repeated diagnosis and the position of each tooth at the nth time of the correction scheme. In this embodiment, the tooth model for the follow-up examination and the tooth models for the initial examination are registered and overlapped to obtain the change situation of the positions of the teeth during the follow-up examination.

S9: and correcting the correction scheme according to the deviation until the invisible orthodontics on the teeth of the patient are finished. In this embodiment, if there is a deviation from the correction plan at the time of the return visit, the correction plan is corrected. At the next visit, the deviation from the expected position is calculated based on the last corrected correction plan.

Further, S2: according to the craniofacial image and the oral cavity scanning result, determining each tooth model and the gingival alveolar bone model for initial diagnosis, which specifically comprises the following steps:

s21: and determining a primary diagnosis dental root model and a primary diagnosis alveolar bone model according to the craniofacial image. In this embodiment, the craniofacial image is introduced into an analysis device, and an initial dental root crown model and an initial alveolar bone model are obtained through image processing steps such as segmentation and reconstruction.

S22: and determining an initial diagnosis dental crown model and an initial diagnosis gingival model according to the oral cavity scanning result.

S23: and obtaining each tooth model for initial diagnosis according to the tooth root model for initial diagnosis and the tooth crown model for initial diagnosis.

S24: and registering and combining the initial examination alveolar bone model and the initial examination gingival model to obtain the initial examination gingival alveolar bone model.

Specifically, S23: obtaining each tooth model for initial diagnosis according to the tooth root model for initial diagnosis and the tooth crown model for initial diagnosis, and the method specifically comprises the following steps:

and registering the initial diagnosis dental root model and the initial diagnosis dental crown model to obtain a first registration relation.

Based on the first registration relationship, the preliminary root crown model is segmented into a root portion and a crown portion.

And replacing the dental crown part with the initial diagnosis dental crown model to obtain each initial diagnosis dental model.

Further, the preliminary diagnosis tooth models are positions of the preliminary diagnosis teeth in a three-dimensional coordinate system. And the tooth models of the n-1 th repeated diagnosis are the positions of the teeth of the n-1 th repeated diagnosis in the three-dimensional coordinate system.

S5: obtaining each tooth model for the nth repeated diagnosis according to each tooth model for the nth-1 repeated diagnosis and the dental crown model for the nth repeated diagnosis, and specifically comprising the following steps:

and registering each tooth model of the n-1 th repeated diagnosis and the crown model of the n-th repeated diagnosis to obtain a second registration relation.

And replacing the three-dimensional coordinate system of each tooth model of the nth-1 repeated diagnosis with the three-dimensional coordinate system of each tooth model of the nth repeated diagnosis based on the second registration relation to obtain each tooth model of the nth repeated diagnosis.

S6: obtaining the gingival alveolar bone model of the nth re-examination according to the gingival alveolar bone model of the (n-1) th re-examination and the gingival model of the nth re-examination, which specifically comprises the following steps:

and registering the gum model of the nth re-examination and the gum alveolar bone model of the (n-1) th re-examination to obtain a third registration relation.

And replacing the gum part in the gum alveolar bone model of the (n-1) th re-diagnosis with the gum model of the nth re-diagnosis based on the third registration relation to obtain the gum alveolar bone model of the nth re-diagnosis.

In particular, each object or model in three-dimensional space has a corresponding three-dimensional coordinate system representing its position in space, the new position being the new coordinate system. Compared with the initial diagnosis, the positions of the teeth are changed to some extent during the re-diagnosis. The three-dimensional coordinate system of the tooth model at the initial diagnosis is deleted and is replaced by the three-dimensional coordinate system of the dental crown at the repeated diagnosis, so that all the tooth models obtained at the initial diagnosis are arranged as the teeth at the repeated diagnosis.

Further, the method for monitoring the treatment progress of the orthodontic invisible patient based on the oral cavity scanning model further comprises the following steps:

combining each tooth model of the nth repeated examination and the gingival alveolar bone model of the nth repeated examination to obtain the integral tooth model of the nth repeated examination. The total model of the teeth for the double examination includes the tooth, gum and alveolar bone parts.

And determining the relation of the root bones of each tooth in the nth repeated diagnosis according to the position relation of the integral tooth model in the three-dimensional space in the nth repeated diagnosis. Specifically, the position relationship of the tooth root and the alveolar bone in the three-dimensional space is observed tooth by tooth in the analysis equipment, and the relationship of the root bone of each tooth in the double diagnosis is obtained.

Preferably, the method for monitoring the treatment progress of the orthodontic contact patient based on the oral cavity scanning model further comprises the following steps:

and determining the occlusion relation of the upper dentition and the lower dentition in the nth repeated diagnosis according to the oral cavity scanning result in the nth repeated diagnosis.

And determining the total change condition of each tooth position in the nth repeated diagnosis according to each tooth model in the nth repeated diagnosis, the gingival alveolar bone model in the nth repeated diagnosis and the occlusion relation in the nth repeated diagnosis.

And according to the total change of the positions of the teeth during the re-diagnosis and the tooth models during the initial diagnosis, carrying out registration and overlapping in an analysis device to obtain the position change of the teeth generated by the movement, growth and jaw position change from the initial diagnosis to the re-diagnosis.

The models involved in the invention all comprise corresponding upper jaw models and lower jaw models. When analyzing the change of the tooth positions, the relationship between the roots and bones of the teeth, and the deviation from the expected position in the maxilla consultation, the maxilla model part in each model is used, and when analyzing the change of the tooth positions, the relationship between the roots and bones of the teeth, and the deviation from the expected position in the mandible consultation, the mandible model part in each model is used. Finally, the total change of the position of each tooth can be determined according to the occlusion relation of the upper dentition and the lower dentition.

The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model can enable doctors to obtain the real-time position relationship between the tooth roots and the alveolar bones in the three-dimensional space, the difference between the real-time position of the teeth in the three-dimensional space and the initial diagnosis time, and the difference between the actual position of the teeth in the three-dimensional space and the position of the teeth designed by the treatment scheme, so that corresponding adjustment and treatment can be carried out, and the invisible orthodontic treatment can be stably progressed. The position of the tooth in the three-dimensional space during the double examination and the initial examination can be overlapped and compared, the technical characteristics of invisible orthodontics can be known more, and then the bracket-free invisible appliance is improved correspondingly.

As shown in fig. 2, the system for monitoring the treatment progress of the orthodontic invisible patient based on the oral scanning model comprises: the system comprises an initial diagnosis data acquisition unit 1, an initial diagnosis model determination unit 2, a correction scheme determination unit 3, a re-diagnosis oral cavity scanning unit 4, a re-diagnosis dental crown model determination unit 5, a re-diagnosis gingival alveolar bone model determination unit 6, a corrected tooth position determination unit 7, a deviation determination unit 8 and a correction unit 9.

The initial diagnosis data acquisition unit 1 is used for shooting a CT or CBCT for a patient and carrying out oral cavity scanning during initial diagnosis to obtain a craniofacial image and an oral cavity scanning result.

The initial diagnosis model determining unit 2 is connected with the initial diagnosis data acquiring unit 1, and the initial diagnosis model determining unit 2 is used for determining each tooth model and each initial diagnosis gingival alveolar bone model according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part.

The orthodontic plan determining unit 3 is connected to the preliminary-diagnosis model determining unit 2, and the orthodontic plan determining unit 3 is configured to determine an initial position and an orthodontic plan of each tooth according to each tooth model of the preliminary diagnosis and the gingival alveolar bone model of the preliminary diagnosis.

The repeated-diagnosis oral cavity scanning unit 4 is used for scanning the oral cavity of the patient during the nth repeated diagnosis, determining a dental crown model and a gingival model for the nth repeated diagnosis, wherein n is more than or equal to 1;

the re-diagnosis dental crown model determining unit 5 is respectively connected with the re-diagnosis oral cavity scanning unit 4 and the initial diagnosis model determining unit, and the re-diagnosis dental crown model determining unit 5 is used for obtaining each tooth model of the n-th re-diagnosis according to each tooth model of the n-1-th re-diagnosis and the dental crown model of the n-th re-diagnosis. The tooth models of the 0 th repeated diagnosis are the tooth models of the initial diagnosis.

The re-diagnosis gingival alveolar bone model determining unit 6 is respectively connected with the re-diagnosis oral cavity scanning unit 4 and the initial diagnosis model determining unit 2, and the re-diagnosis gingival alveolar bone model determining unit 6 is used for obtaining an nth re-diagnosis gingival alveolar bone model according to the (n-1) th re-diagnosis gingival alveolar bone model and the nth re-diagnosis gingival model. The 0 th re-examination gingival alveolar bone model is an initial examination gingival alveolar bone model.

The orthodontic tooth position determining unit 7 is connected with the re-diagnosis dental crown model determining unit 5 and the re-diagnosis gingival alveolar bone model determining unit 6 respectively, and the orthodontic tooth position determining unit 7 is used for obtaining the positions of the teeth in the n-th re-diagnosis according to the tooth models in the n-th re-diagnosis and the gingival alveolar bone model in the n-th re-diagnosis.

The deviation determining unit 8 is connected to the orthodontic tooth position determining unit 7, and the deviation determining unit 8 is configured to obtain the actual position change of each tooth at the nth review and the deviation from the expected position at the nth review in the orthodontic plan according to the position of each tooth at the nth review and the position of each tooth at the nth review in the orthodontic plan.

The correcting unit 9 is respectively connected with the deviation determining unit 8 and the correction scheme determining unit 3, and the correcting unit 9 is used for correcting the correction scheme according to the deviation until the invisible orthodontics of the teeth of the patient are finished.

Further, the preliminary diagnosis model determination unit 2 includes: a preliminary-diagnosis tooth alveolar bone model determination module 21, a preliminary-diagnosis crown and gum model determination module 22, a preliminary-diagnosis respective tooth model determination module 23, and a preliminary-diagnosis gum alveolar bone model determination module 24.

The initial-diagnosis tooth alveolar bone model determining module 21 is connected with the initial-diagnosis data acquiring unit 1, and the initial-diagnosis tooth alveolar bone model determining module 21 is used for determining an initial-diagnosis tooth root model and an initial-diagnosis alveolar bone model according to the craniofacial image.

The initial diagnosis dental crown and gingival model determining module 22 is connected with the initial diagnosis data obtaining unit 1, and the initial diagnosis dental crown and gingival model determining module 22 is used for determining an initial diagnosis dental crown model and an initial diagnosis gingival model according to the oral cavity scanning result.

Each tooth model determination module 23 in the initial diagnosis is respectively connected with the initial diagnosis tooth alveolar bone model determination module 21 and the initial diagnosis dental crown and gingival model determination module 22, and each tooth model determination module 23 in the initial diagnosis is used for obtaining each tooth model in the initial diagnosis according to the initial diagnosis dental crown model and the initial diagnosis dental crown model.

The preliminary examination gingival alveolar bone model determining module 24 is respectively connected with the preliminary examination tooth alveolar bone model determining module 21 and the preliminary examination dental crown gingival model determining module 22, and the preliminary examination gingival alveolar bone model determining module 24 is used for registering and combining the preliminary examination alveolar bone model and the preliminary examination gingival model to obtain the preliminary examination gingival alveolar bone model.

Further, the preliminary diagnosis tooth model determination module 23 includes: a registration sub-module, a segmentation sub-module, and a replacement sub-module.

The registration sub-module is respectively connected with the initial diagnosis tooth alveolar bone model determining module 21 and the initial diagnosis dental crown and gum model determining module 22, and the registration sub-module is used for registering the initial diagnosis dental crown model and the initial diagnosis dental crown model to obtain a first registration relation.

The segmentation sub-module is connected with the registration sub-module and is used for segmenting the initial diagnosis dental root crown model into a dental root part and a dental crown part based on the first registration relation.

The replacing sub-module is connected with the segmenting sub-module and used for replacing the dental crown part with the initial diagnosis dental crown model to obtain each initial diagnosis dental model.

Compared with the prior art, the system for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model has the same beneficial effects as the method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model, and the detailed description is omitted.

The invention discloses a device for monitoring treatment progress of an invisible orthodontic patient based on an oral cavity scanning model, which comprises: a memory, a processor, and a computer program stored on the memory and executed on the processor; the processor, when executing the computer program, implements the steps of:

during initial diagnosis, the patient is shot by CT or CBCT and oral cavity scanning is carried out to obtain craniofacial images and oral cavity scanning results.

Determining each tooth model and the gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model for initial diagnosis comprises a root part and a crown part; the initial diagnosis gingival alveolar bone model comprises a gingival part and an alveolar bone part.

And determining the initial position and the correction scheme of each tooth according to each tooth model of the initial diagnosis and the gingival alveolar bone model of the initial diagnosis.

And during the nth re-diagnosis, carrying out oral scanning on the patient to determine the dental crown model and the gingival model for the nth re-diagnosis, wherein n is more than or equal to 1.

Obtaining each tooth model of the nth repeated diagnosis according to each tooth model of the nth-1 repeated diagnosis and the dental crown model of the nth repeated diagnosis; each tooth model of the 0 th repeated diagnosis is each tooth model of the initial diagnosis;

obtaining a gingival alveolar bone model for the nth re-examination according to the gingival alveolar bone model for the (n-1) th re-examination and the gingival model for the nth re-examination; the 0 th time re-examination gingival alveolar bone model is a primary examination gingival alveolar bone model;

obtaining the position of each tooth during the nth repeated diagnosis according to each tooth model of the nth repeated diagnosis and the gingival alveolar bone model of the nth repeated diagnosis;

and obtaining the actual position change condition of each tooth in the nth time of the repeated diagnosis and the deviation from the expected position in the nth time of the repeated diagnosis in the correction plan according to the position of each tooth in the nth time of the repeated diagnosis and the position of each tooth in the nth time of the repeated diagnosis in the correction plan.

And correcting the correction scheme according to the deviation until the invisible orthodontics on the teeth of the patient are finished.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.