阅读说明：本技术 桩核拆除引导导板及其制备方法 (Guide plate for pile core dismantling and preparation method thereof ) 是由 于海洋 楼雨欣 于 2021-01-12 设计创作，主要内容包括：本发明公开了桩核拆除引导导板及其制备方法,制备方法包括以下步骤：S1、通过拍摄CBCT获取患者口腔及断桩的DICOM数据,并使用牙科扫描设备获取术前模型；S2、拟合步骤S1获取的DICOM数据和术前模型,基于拟合数据按照修复原则选择目标桩核直径及长度,并确定目标桩核在DICOM数据和术前模型中的三维位置；S3、基于所选的桩核尺寸及三维位置,生成桩核拆除导板；S4、将步骤S3生成的桩核拆除导板3D打印成型获得桩核拆除引导导板。将本发明所述导板用于桩核拆除,能够解决传统拆桩技术精确度不足、偏离长轴以及对牙体伤害大的问题,达到了快速精准拆桩同时保护牙体组织的目的。(The invention discloses a guide plate for removing a pile core and a preparation method thereof, wherein the preparation method comprises the following steps: s1, acquiring DICOM data of the oral cavity and the broken pile of the patient by shooting CBCT, and acquiring a preoperative model by using dental scanning equipment; s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model; s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core; and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate. The guide plate is used for pile core removal, so that the problems of insufficient precision, deviation from a long shaft and great damage to tooth bodies in the traditional pile removal technology can be solved, and the aims of quickly and accurately removing the pile and protecting the tooth body tissues are fulfilled.)

1. The preparation method of the guide plate for removing the pile core is characterized by comprising the following steps of:

s1, acquiring DICOM data of the oral cavity and the broken pile of the patient by shooting CBCT, and acquiring a preoperative model by using dental scanning equipment;

s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model;

s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core;

and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate.

2. The method for preparing the guide plate for removing the pile core according to claim 1, wherein in the step S3, the concrete design process of the guide plate for removing the pile core is as follows:

designing a guide sleeve (3) based on the target pile core and the selected needle (3), wherein the diameter of the guide sleeve (2) is the same as the outer diameter of the selected needle (3); and drawing a guide plate extension area according to adjacent teeth, and finally generating a pile core to remove the guide plate.

3. The method for preparing a guide plate for removing a pile core according to claim 1, wherein the dental scanning equipment comprises 3shape, Shining3D DentalScan.

4. The method for preparing the guide plate for removing the pile core according to claim 1, further comprising sequentially performing heat treatment and post-treatment on the guide plate formed by 3D printing.

5. The preparation method of the guide plate for removing the pile core according to claim 4, wherein the heat treatment comprises the following specific processes:

preserving the heat for 20-30 minutes at 80 ℃, and then cooling along with the furnace.

6. The preparation method of the guide plate for removing the pile core according to claim 4, wherein the post-treatment comprises the following specific processes:

soaking the guide plate in 80 deg.C oleum Maydis, ultrasonic cleaning for 10-15min, and wiping with alcohol.

7. The pile-core removal guide plate manufactured by the manufacturing method of any one of claims 1 to 6.

8. The pile-core removal guide according to claim 7, characterized in that it comprises a guide body (1), on which guide body (1) a guide sleeve (2) for passing a needle (3) is provided.

9. The pile-core removal guide plate according to claim 7, characterized in that the thickness of the guide plate body (1) is 1.5-2mm, the thickness of the guide sleeve (2) is 1.5mm, and the inner diameter of the guide sleeve (2) is the same as the outer diameter of the needle (3).

10. The pile-core removal guide plate according to claim 7, wherein the pile-core removal guide plate is made of a resin material.

Technical Field

The invention relates to the technical field of dentistry, in particular to a guide plate for removing a pile core and a preparation method thereof.

Background

When the tooth tissue is damaged in a large area, especially under the condition that the residual tooth tissue of the affected tooth after the root canal treatment is insufficient or the intensity is insufficient, the post-nuclear crown is the main repairing method for retaining the residual crown and the residual root and recovering the appearance shape and the function of the residual crown. The post-core crown is used for firmly combining the tooth root and the post core into an organic whole through an adhesive, and remaining tooth roots and the artificial dental crown are fixedly connected by means of the retention of the root canal and the pulp cavity, so that the aim of repairing is fulfilled.

However, clinically, patients who need to remove the core of the post and perform treatment again due to root tip lesion, secondary caries, loss of retention force, nucleus fracture, pile fracture or looseness and the like are often seen.

At present, when a clinician takes out a pile from a root canal, a high-speed turbine drill is generally adopted to cut a circle of narrow groove around the crown of the pile, or an ultrasonic instrument is used for vibrating the pile to release a binder. However, the high-speed turbo drill excessively abrades the tooth tissues, the root canal mouth is too wide, and the root perforation and the fracture are easily caused; the ultrasonic vibration hardly has the vibration loosening effect on some adhesives. Therefore, how to remove the core rapidly and effectively without destroying the tooth body is one of the difficulties faced by the dentist of mouth rehabilitation.

Disclosure of Invention

The guide plate is used for pile core removal, can solve the problems of insufficient precision, deviation from a long shaft and great damage to tooth bodies of the traditional pile removal technology, and achieves the purposes of quickly and accurately removing the pile and protecting the tooth body tissues.

The invention is realized by the following technical scheme:

the preparation method of the guide plate for removing the pile core comprises the following steps:

s1, acquiring DICOM data of the oral cavity and the broken pile of the patient by shooting CBCT, and acquiring a preoperative model by using dental scanning equipment;

s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model;

s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core;

and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate.

The invention firstly uses the digitization technology and the 3D printing technology for manufacturing the dental guide plate, and improves the precision of the pile core dismantling operation.

The guide plate prepared by the method is used for the pile core dismantling operation, the direction and the depth of the entering of the machine needle are controlled through the guide of the guide plate, the problems of insufficient accuracy, deviation from a long shaft and great damage to tooth bodies of the traditional pile dismantling technology are solved, and the purposes of quickly and accurately dismantling the pile and protecting the tooth body tissues are achieved.

The invention generates the operation guide plate by a digital 3D printing technology, can complete operation design before operation according to an expected repair target, and transfers a plan before operation to guide the completion of the operation in the operation.

Further, in step S3, the specific design process of the pile core removing guide plate is as follows:

designing a guide sleeve based on the target pile core and the selected needle, wherein the diameter of the guide sleeve is the same as the outer diameter of the selected needle; and drawing a guide plate extension area according to adjacent teeth, and finally generating a pile core to remove the guide plate.

Further, the dental scanning device includes 3shape, Shining3D DentalScan.

Further, the method comprises the step of sequentially carrying out heat treatment and post-treatment on the guide plate formed by 3D printing.

Further, the specific process of the heat treatment is as follows:

preserving the heat for 20-30 minutes at 80 ℃, and then cooling along with the furnace.

Further, the specific process of the post-treatment is as follows:

soaking the guide plate in 80 deg.C oleum Maydis, ultrasonic cleaning for 10-15min, and wiping with alcohol.

The guide plate for removing the pile core comprises a guide plate main body, and a guide sleeve for penetrating a needle is arranged on the guide plate main body.

Further, the thickness of the guide plate main body is 1.5-2mm, the thickness of the guide sleeve is 1.5mm, and the inner diameter of the guide sleeve is the same as the outer diameter of the sewing needle.

Further, the pile core removing guide plate is made of resin materials.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the invention completes the removal of the pile core through the guide plate, and solves the problems of high randomness and large error caused by the fact that a clinician removes the pile core according to experience.

2. The invention transfers the preoperative plan to the operation through a digital technology, and simultaneously accurately controls the path of the needle through the guide plate, thereby avoiding excessive wear of the tooth tissue caused by the traditional high-speed turbine drill or ultrasonic removal and conforming to the repairing concept of minimally invasive.

3. The invention has simple and convenient operation, can greatly reduce the time of clinical operation of a clinician, simultaneously improves the treatment experience of a patient, and can be popularized and used in clinic.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a schematic diagram of a digital model obtained by the present invention;

FIG. 3 is a schematic view of a virtual pile-core demolition scheme designed by the present invention;

fig. 4 is a front view of the pile core removing guide plate designed by the invention.

Reference numbers and corresponding part names in the drawings:

1-guide plate main body, 2-guide sleeve and 3-needle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 1, the preparation method of the guide plate for removing the pile core comprises the following steps:

s1, acquiring DICOM data of the oral cavity and broken piles of the patient by shooting CBCT, and acquiring a preoperative model by using a dental scanning device, as shown in figure 2, wherein the dental scanning device comprises 3shape, Shining3D DentalScan;

s2, fitting the DICOM data and the preoperative model acquired in the step S1, selecting the diameter and the length of the target pile-core according to a repairing principle based on the fitting data, and determining the three-dimensional position of the target pile-core in the DICOM data and the preoperative model;

s3, generating a pile-core removing guide plate based on the size and the three-dimensional position of the selected pile core, wherein a virtual pile-core removing scheme designed based on the generated pile-core removing guide plate is shown in FIG. 3;

the concrete design process of the pile core removing guide plate is as follows:

designing a guide sleeve 3 based on the target core and the selected needle 3, the diameter of the guide sleeve 2 being the same as the outer diameter of the selected needle 3; drawing a guide plate extension area according to adjacent teeth, and finally generating a pile core dismantling guide plate;

and S4, 3D printing and forming the core removing guide plate generated in the step S3 to obtain the core removing guide plate.

As shown in fig. 4, the guide for removing the pile core prepared in this embodiment includes a guide body 1, and a guide sleeve 2 for passing a needle 3 is provided on the guide body 1; the thickness of the guide plate main body 1 is 1.5-2mm, the thickness of the guide sleeve 2 is 1.5mm, and the inner diameter of the guide sleeve 2 is the same as the outer diameter of the sewing needle 3; the guide plate for removing the pile core is made of resin materials.

The guide plate prepared by the embodiment is used for removing the pile core, the direction and the depth of the guide plate for guiding and controlling the needle 3 to enter are used for solving the problems of insufficient accuracy, deviation of a long shaft and great damage to the tooth body in the traditional pile removing technology, and the purpose of quickly and accurately removing the pile and simultaneously protecting the tooth body tissue is achieved.

Example 2:

as shown in fig. 1, the present embodiment is based on embodiment 1, and further includes sequentially performing heat treatment and post-treatment on the 3D printing-formed guide plate; the specific process of the heat treatment is as follows:

preserving heat for 20-30 minutes at 80 ℃, and then cooling along with the furnace;

the post-treatment comprises the following specific processes:

soaking the guide plate in 80 deg.C oleum Maydis, ultrasonic cleaning for 10-15min, and wiping with alcohol.

In the present embodiment, the performance of the guide plate can be improved by sequentially performing the heat treatment and the post-treatment on the guide plate.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.