阅读说明：本技术 部分牙列缺失患者的咬合板制作方法及咬合板 (Manufacturing method of occlusal plate for partial dentition loss patient and occlusal plate ) 是由 范敏波 于 2020-05-28 设计创作，主要内容包括：本申请公开了一种部分牙列缺失患者的咬合板制作方法及咬合板,涉及口腔修复领域。本申请借助全数字化流程,包括口扫获取患者全牙列模型、下颌运动记录仪记录患者下颌功能运动轨迹并且获取患者颌位关系、CAD软件设计咬合板、3D打印制作流程。全数字化流程解决了传统制作流程中的耗时长和精准度差的问题。同时针对部分牙列缺失本申请采用空气泡的方式,在缺牙处去除牙齿颈部的倒凹,填充上假牙空气泡,使得牙列曲线平缓圆润。这样不管是在压制模型还是直接3D打印咬合板都能够让患者在摘带过程中舒适感提升,并且同时还保存良好的固位。(The application discloses a method for manufacturing an occlusal plate of a patient with partial dentition loss and the occlusal plate, and relates to the field of oral repair. The method is characterized in that a full digital flow is adopted, a full dentition model of a patient is obtained through oral scanning, a mandible functional movement track of the patient is recorded through a mandible movement recorder, the jaw relation of the patient is obtained, a bite plate is designed through CAD software, and a 3D printing manufacturing flow is obtained. The full digitalization process solves the problems of long time consumption and poor precision in the traditional manufacturing process. Simultaneously to partial dentition disappearance this application adoption air bubble's mode, the department of missing the tooth gets rid of the undercut of tooth neck, fills artificial tooth air bubble for the dentition curve is mild mellow and full. This allows for improved patient comfort during the detapping process, while also preserving good retention, whether in a compression model or a direct 3D printed bite plate.)

1. A method for manufacturing an occlusal plate of a patient with partial dentition loss is characterized by comprising the following steps:

obtaining a full dentition model by intraorally scanning dentition information of a patient;

measuring the lower jaw movement track of the patient by using the electronic facial arch, and determining the jaw position relation of the patient;

carrying out three-dimensional design on the occlusal splint in software, and carrying out contact point adjustment by referring to the mandible movement track;

in software, aiming at a patient with partial missing dentition, an air bubble mode is adopted, inverted dents at the neck part of a tooth are removed at the missing tooth part, air bubbles of a false tooth are filled, so that a dentition curve is smooth and mellow, or a material is used for forming an appearance similar to the dentition, and then a scanning digital model is carried out to complete line design;

and 3D printing and manufacturing are carried out on the exported data, and the data is subjected to grinding adjustment treatment, or machining cutting and manufacturing are carried out according to the designed data.

2. The method of manufacturing an occlusal plate according to claim 1 wherein the air bubbles are used in such a manner that the air bubbles of the artificial tooth are reproduced and filled in the edentulous portion in the same shape and size as the opposite side or the opposite jaw of the edentulous portion to restore the normal arch curvature and contour of the edentulous portion.

3. The method for manufacturing an occlusal plate according to claim 1, wherein the air bubbles are filled in the edentulous area with an ellipsoid shape close to the teeth and smooth surface to restore the normal arch curve and shape of the edentulous area.

4. The method of manufacturing a bite plate according to claim 1, wherein the step of obtaining the full dentition model by intraorally scanning dentition information of the patient comprises: the method is characterized in that an intraoral scanner is used for scanning the full dentition information of a patient, and the information is exported to software in an STL format to obtain a full dentition model.

5. The method of manufacturing an occlusal plate according to claim 1, wherein the step of measuring the mandibular movement trajectory of the patient using an electronic facial arch and determining the jaw relation of the patient comprises: the functional movements of left and right sides, protrusion, opening, chewing and pronunciation of a patient are measured by using an electronic facial arch, the lower jaw movement track of the patient is recorded to obtain a lower jaw movement track curve file, the track curve file is imported into software to be combined with a model, so that the model can simulate the movement in the software according to the movement track curve and determine the jaw position relation of the patient.

6. The method of manufacturing a bite plate according to claim 1, wherein the step of three-dimensionally designing the bite plate in software and adjusting the contact point with reference to the mandibular movement trajectory comprises: the method is to remove and trim occlusion interference points and areas caused by functional motion trajectory curves in software to obtain an occlusion relation and an occlusion plate design which have no occlusion interference and good contact.

7. The method for manufacturing a bite plate according to any one of claims 1 to 6, wherein the step of deriving data for 3D printing and milling: the printed model is tried on the patient mouth or plaster model, so that the patient does not feel severe swelling pain when wearing the model.

8. A bite plate produced by the method for producing a bite plate according to any one of claims 1 to 7.

Technical Field

The application relates to the field of temporomandibular joint adjuvant therapy and bruxism in dental restoration, in particular to a method for manufacturing an occlusal plate of a patient with partial dentition loss and the occlusal plate.

Background

Temporomandibular joint disorder is a common clinical condition in the stomatology department, with major clinical manifestations of local soreness and pain in the joints, joint bounce and mandibular movement disorders. In order to reduce the temporomandibular joint tension degree of temporomandibular joint disorder, the current conservative treatment mode is to wear an occlusal plate, so that the upper and lower dentitions of the patient are separated by a certain distance, the pressure of the joint is reduced, and the symptoms of the patient can be relieved to a certain extent.

The traditional manufacturing method of the occlusal plate generally uses impression materials to take a mould and pours plaster to obtain a dental model of a patient. The physician manually determines the ideal jaw position relationship. Then they are transferred to the jaw frame, the wax pattern of the occlusal plate is made on the jaw frame, finally the final resin occlusal plate is obtained by the hydrothermal method.

The above method has the following disadvantages: firstly, the method has complex flow, the preparation can be completed within 2-3 days, the time consumption is long, the patient needs to make a repeated diagnosis for a plurality of times, the diagnosis time and cost of the patient are increased, and a great deal of energy of the doctor is also consumed. Secondly, the accuracy is poor, and the average value jaw frame used in the manufacturing process cannot well reflect the position relation of the actual condyles of each patient relative to the maxilla. The resulting bite plates often require a large amount of intraoral and extraoral conditioning. Patient comfort is affected, resulting in poor treatment. Thirdly, the bite plate made by the method is in the mouth of a patient with missing dentition, and due to the existence of the undercut of the missing tooth area, the bite plate is difficult to take off, the comfort degree is poor, the loss of teeth can be caused even by poor operation, and the compliance of the patient is affected.

Disclosure of Invention

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

According to one aspect of the present application, there is provided a method of manufacturing a bite plate for a patient with partial dentition loss, comprising the steps of:

obtaining a full dentition model by intraorally scanning dentition information of a patient;

measuring the lower jaw movement track of the patient by using the electronic facial arch, and determining the jaw position relation of the patient;

carrying out three-dimensional design on the occlusal splint in software, and carrying out contact point adjustment by referring to the mandible movement track;

in software, aiming at a patient with partial missing dentition, an air bubble mode is adopted, inverted dents at the neck part of a tooth are removed at the missing tooth part, air bubbles of a false tooth are filled, so that a dentition curve is smooth and mellow, or a material is used for forming an appearance similar to the dentition, and then a scanning digital model is carried out to complete line design;

and 3D printing and manufacturing are carried out on the exported data, and the data is subjected to grinding adjustment treatment, or machining cutting and manufacturing are carried out according to the designed data.

The method for manufacturing the occlusal plate adopts the air bubble mode that false tooth air bubbles with the same shape and the same size as the opposite side of the missing tooth or the jaw are copied and filled at the missing tooth position, so that the missing area restores to the normal dental arch curve and the shape.

The method for manufacturing the occlusal plate adopts the mode of air bubbles, namely, the ellipsoid with the shape close to the teeth and smooth surface is filled in the edentulous part, so that the curve and the shape of the edentulous area are recovered to be normal.

The manufacturing method of the occlusal splint comprises the following steps of obtaining a full dentition model by scanning dentition information of a patient through an oral cavity: the method is characterized in that an intraoral scanner is used for scanning the full dentition information of a patient, and the information is exported to software in an STL format to obtain a full dentition model.

The method for manufacturing the bite plate comprises the following steps of measuring the mandible movement track of a patient by using an electronic facial arch and determining the jaw relation of the patient: the functional movements of left and right sides, protrusion, opening, chewing and pronunciation of a patient are measured by using an electronic facial arch, the lower jaw movement track of the patient is recorded to obtain a lower jaw movement track curve file, the track curve file is imported into software to be combined with a model, so that the model can simulate the movement in the software according to the movement track curve and determine the jaw position relation of the patient.

The method for manufacturing the bite plate comprises the following steps of carrying out three-dimensional design on the bite plate in software, and carrying out contact point adjustment by referring to a mandible movement track: the method is to remove and trim occlusion interference points and areas caused by functional motion trajectory curves in software to obtain an occlusion relation and an occlusion plate design which have no occlusion interference and good contact.

The method for manufacturing the occlusal plate comprises the following steps of exporting data to perform 3D printing and manufacturing, and performing grinding treatment: the printed model is tried on the patient mouth or plaster model, so that the patient does not feel severe swelling pain when wearing the model.

According to another aspect of the present application, there is provided a bite plate manufactured by the above method.

The occlusal splint manufacturing method and the occlusal splint for the partial dentition missing patient have the advantages that a full digital process is adopted, a full dentition model of the patient is obtained through oral scanning, a mandible movement recorder records a mandible functional movement track of the patient, the jaw relation of the patient is obtained, the occlusal splint is designed through CAD software, and a 3D printing manufacturing process is adopted. The full digitalization process solves the problems of long time consumption and poor precision in the traditional manufacturing process. Simultaneously to partial dentition disappearance this application adoption air bubble's mode, the department of missing the tooth gets rid of the undercut of tooth neck, fills artificial tooth air bubble for the dentition curve is mild mellow and full. This allows for improved patient comfort during the detapping process, while also preserving good retention, whether in a compression model or a direct 3D printed bite plate.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic flow chart of a method of making a bite plate for a partial dentition loss patient according to one embodiment of the present application;

fig. 2 is a schematic view of air bubble filling for a partial maxillary dentition missing condition.

Detailed Description

Fig. 1 is a schematic flow chart of a method of making a bite plate for a partial dentition loss patient according to one embodiment of the present application. Fig. 2 is a schematic view of air bubble filling for a partial maxillary dentition missing condition.

As shown in fig. 1, the present embodiment provides a method for manufacturing a dental articulator for a patient with partial dentition loss, comprising the following steps:

step 100, obtaining a full dentition model by intraorally scanning dentition information of a patient. In specific implementation, the intraoral scanner can be used for scanning the complete dentition information of the patient, and the complete dentition information is exported to software in an STL format to obtain a complete dentition model.

And 200, measuring the mandible movement track of the patient by using the electronic facial arch, and determining the jaw position relation of the patient. When the method is specifically implemented, the functional movements of the left side, the right side, the protrusion, the opening, the chewing and the pronunciation of a patient can be measured by using the electronic facial arch, the lower jaw movement track of the patient is recorded, a lower jaw movement track curve file is obtained, the track curve file is imported into software to be combined with a model, so that the model can simulate the movement in the software according to the movement track curve and determine the jaw position relation of the patient.

And 300, carrying out three-dimensional design on the bite plate in software, and carrying out contact point adjustment by referring to the mandible movement track. In specific implementation, the occlusion interference points and areas caused by the functional motion trajectory curve can be removed and trimmed in software to obtain the occlusion relationship and the design of the occlusion plate which have no occlusion interference and good contact.

Step 400, aiming at a patient with partial missing dentition in software, removing the inverted concave at the neck of the tooth at the missing tooth position by adopting an air bubble mode, and filling false tooth air bubbles to ensure that the dentition curve is smooth and mellow. Alternatively, a material is molded to form a profile similar to the dentition, followed by scanning the digital model.

In the software, aiming at a patient with partial missing dentition, the inverted concave part of the neck of the tooth is removed at the missing tooth position in an air bubble mode, and the air bubbles of the false tooth are filled, so that the dentition curve is smooth and mellow. In specific implementation, the air bubbles can be used for copying and filling false teeth air bubbles on the opposite side of the missing tooth or on the jaw with the same shape and the same size, so that the missing area can restore to the normal dental arch curve and shape. As shown in fig. 2, in the present embodiment, when some of the dentition defects are exemplified by 15 and 24 teeth (which are more common clinically), the dentition may have a larger gap, a larger undercut at the neck of the tooth, and the like. This is very disadvantageous for the bite plate to be in place and for the extraction of the belt. Therefore, in the edentulous area, the undercut area and the missing tooth are copied in the software in the reverse three-dimensional software to perform lateral tooth or jaw tooth filling and smoothing, so that the whole dental arch curve is restored to the normal curve range and the shape as far as possible, and the comfort of a patient in the process of tape removal and treatment is better and the curative effect is better. In other embodiments, such as where neither the contralateral nor contra-mandibular teeth of the edentulous area are present, the air bubbles can be used by filling the edentulous area with ellipsoids having a smooth surface that is close to the teeth, to restore the normal arch curvature and contour of the edentulous area.

Or the material (silicon rubber, blue-butyl rubber, self-hardening material and the like) can be used for molding to form the appearance similar to the dentition, and then scanning is carried out to form a digital model to complete the design.

And 500, exporting data, performing 3D printing and making, and performing grinding treatment. During the concrete implementation, can try on the model that will print the completion in patient's mouth or on the gypsum model, make the patient wear not have serious tight painful sense that rises, improve than conventional occlusal splint comfort.

Or after the data is designed, the PMMA polymethyl methacrylate material is used for machining and cutting.