阅读说明：本技术 一种利用树脂工作模型的义齿加工工艺 (False tooth processing technology using resin working model ) 是由 宋凯 高家元 王振川 高兴 廖玉 司宇 于 2019-11-05 设计创作，主要内容包括：本发明属于口腔修复技术领域,具体涉及一种利用树脂工作模型的义齿加工工艺。包括：(1)对患者进行口内扫描,形成包括口腔缺牙情况的三维图像数据；(2)根据得到的三维图像数据进行工作模型设计和缺失牙设计,然后利用树脂3D打印机打印树脂工作模型；(3)利用步骤(2)完成的缺失牙设计得到的数据进行内冠的制作；(4)将步骤(3)制作的内冠进行上瓷处理,然后在步骤(2)打印出来的树脂工作模型上反复试戴和调整；(5)将调整后的义齿进行高温烧制,然后进行形态修整、精修和上釉,制得义齿。本发明工艺制作的义齿精度更高,且成本低,工艺简单,患者顺应性好。(The invention belongs to the technical field of oral repair, and particularly relates to a false tooth processing technology by using a resin working model. The method comprises the following steps: (1) carrying out intraoral scanning on a patient to form three-dimensional image data including an oral edentulous condition; (2) performing work model design and missing tooth design according to the obtained three-dimensional image data, and then printing a resin work model by using a resin 3D printer; (3) making an inner crown by using the data obtained by the missing tooth design completed in the step (2); (4) carrying out porcelain applying treatment on the inner crown manufactured in the step (3), and then repeatedly trying on and adjusting the resin working model printed in the step (2); (5) and (4) firing the adjusted false tooth at high temperature, and then performing shape trimming, finishing and glazing to obtain the false tooth. The false tooth manufactured by the process has higher precision, low cost, simple process and good patient compliance.)

1. A denture processing technology using a resin working model is characterized by comprising the following steps:

(1) carrying out intraoral scanning on a patient to form three-dimensional image data including an oral edentulous condition;

(2) performing work model design and missing tooth design according to the obtained three-dimensional image data, and then printing a resin work model by using a resin 3D printer;

(3) making an inner crown by using the data obtained by the missing tooth design completed in the step (2);

(4) carrying out porcelain applying treatment on the inner crown manufactured in the step (3), and then repeatedly trying on and adjusting the resin working model printed in the step (2);

(5) and (4) firing the adjusted false tooth at high temperature, and then performing shape trimming, finishing and glazing to obtain the false tooth.

2. A denture processing technique using a resin working model according to claim 1, wherein the material of the resin working model is a light-curable resin.

3. A denture processing technology using a resin working model according to claim 1 or claim 2, wherein the resin working model is obtained by selecting a section of upper and lower jaw data near a missing tooth and printing the section of upper and lower jaw data.

4. The denture processing technology utilizing a resin working model according to claim 1, wherein the coping is a metal coping or an all-ceramic coping.

5. The denture processing technology utilizing a resin working model according to claim 4, wherein the coping is a metal coping, data obtained by missing tooth design is imported into a 3D printing device, and cobalt, chromium, molybdenum and tungsten metal powder are added to complete the manufacturing of the coping.

6. The denture processing technology utilizing the resin working model according to claim 4, wherein the inner crown is an all-ceramic inner crown, and the data obtained by designing the missing tooth is introduced into five-axis linkage digital cutting equipment to directly cut zirconia, so that the manufacture of the all-ceramic inner crown is completed.

7. The denture processing technology utilizing a resin working model according to claim 4, wherein when the inner crown is a full ceramic inner crown, the high-temperature firing in step (5) is carried out at 900-935 ℃ for 30 min; when the inner crown is a metal inner crown, the high-temperature firing temperature in the step (5) is 900-.

Technical Field

The invention belongs to the technical field of oral repair, and particularly relates to a false tooth processing technology by using a resin working model.

Background

To restore normal masticatory function after tooth loss, dentures must be installed. It is desirable to quickly and accurately manufacture a fine and comfortable denture, which takes at least 5-7 days from the removal of the mold, manufacture to installation, but which is also the best estimated time for a single tooth. If the sampling data of the early dental model is inaccurate, the appearance characteristics, the color and the like of the manufactured false tooth are not matched with the conditions in the mouth of the patient, and the false tooth needs to be reworked and modified repeatedly in the installation process, so that a lot of time is wasted. Therefore, the focus on solving this problem is on the accuracy of the previous dental model fabrication and the accuracy of the dental prosthesis fabricated from the dental model. However, the traditional denture processing is a manual work industry mainly based on manual work, the quality and precision of denture products depend on the manual skill level and experience of each master, and the controllability is very low, so that the introduction of digital mechanized equipment, scientific manufacturing process and management becomes a necessary trend for the development of the industry.

Because of the personalized characteristics of the denture, the subsequent processing procedure of the denture is mainly the traditional artificial manufacturing, and a working model needs to be manufactured in the manufacturing process for repeatedly wearing and taking the manufactured denture so as to observe the denture form, adjacency and occlusion relation. The common method for obtaining the working model is to prepare a plaster working model by using a tray to take the model, and when the tray is taken, a patient is easy to have symptoms such as nausea, regurgitation, tray stimulation and stomatocace inflammation. In the process of making a solid impression, the polymerization reaction continues for a short time after the impression material is taken out of the oral cavity. Taking silicone rubber as an example, the polymerization reaction continued for 3min after being taken out of the impression, eventually resulting in a shrinkage of 0.05% to 0.1%. Meanwhile, certain force is inevitably applied to the silicone rubber when the silicone rubber is taken out, so that the deformation of the model caused by stress of the silicone rubber cannot be avoided, and the permanent deformation rate of the silicone rubber is 0.2-0.3%. In addition, the silicone rubber impression material is affected by various factors such as temperature, disinfectant, gloves, etc. The gypsum can generate pure expansion in the curing process, the expansion rate is about 0.085%, the crystal size of the gypsum impression material is 12-25 mu m, and the shape of the gypsum impression material is prism-shaped or irregular needle-shaped, so the fine structure replication capacity of the gypsum material is poor.

Disclosure of Invention

The invention provides a false tooth processing technology by utilizing a resin working model, aiming at solving the problem of poor precision caused by the adoption of a plaster working model in the false tooth manufacturing process in the prior art. The resin work model is directly printed out by the 3D printer, so that the production cost of manpower, auxiliary materials, auxiliary tools, equipment, fields and the like is reduced.

The invention is realized by the following technical scheme:

a denture processing technology using a resin working model comprises the following steps:

(1) carrying out intraoral scanning on a patient to form three-dimensional image data including an oral edentulous condition;

(2) performing work model design and missing tooth design according to the obtained three-dimensional image data, and then printing a resin work model by using a resin 3D printer;

(3) making an inner crown by using the data obtained by the missing tooth design completed in the step (2);

(4) carrying out porcelain applying and porcelain turning treatment on the inner crown manufactured in the step (3), and then repeatedly trying on and adjusting the resin working model printed in the step (2);

(5) and (4) firing the adjusted false tooth at high temperature, and then performing shape trimming, finishing and glazing to obtain the false tooth.

Preferably, the material of the resin working model is light-cured resin.

Preferably, the resin working model is obtained by selecting a section of upper and lower jaw data near a missing tooth to be printed, the use amount of materials is controlled, and the whole model does not need to be copied like a plaster model, so that the waste of the materials is avoided.

Preferably, the material of the inner crown is a metal inner crown or an all-ceramic inner crown.

Preferably, the coping is a metal coping, data obtained by designing the missing tooth is imported into 3D printing equipment, and cobalt, chromium, molybdenum and tungsten metal powder are added to complete the manufacturing of the coping.

Preferably, the inner crown is an all-ceramic inner crown, and data obtained by designing the missing teeth are guided into five-axis linkage digital cutting equipment to directly cut zirconia, so that the all-ceramic inner crown is manufactured.

Preferably, when the inner crown is an all-ceramic inner crown, the high-temperature firing temperature in the step (5) is 900-; when the inner crown is a metal inner crown, the high-temperature firing temperature in the step (5) is 900-.

The invention has the beneficial effects that:

(1) the resin working model is printed by intraoral scanning to acquire information, so that the problems of nausea and regurgitation of a patient caused by tray taking, angular stomatitis caused by tray stimulation and the like are avoided, and the compliance of the patient is good.

(2) According to the invention, after the data model established by the intraoral scanning equipment is adjusted through software design, the resin working model is directly printed by using the resin 3D printer, and the working model is manufactured by using the method, so that the generation procedure can be reduced, the costs of production labor, auxiliary materials, auxiliary tools, equipment, fields and the like are reduced, and the occupational disease risk of dust and noise caused by the generation procedure is avoided.

(3) The invention adopts the resin plaster model to process the false tooth, reduces the error caused by copying the plaster model, has higher model precision and more accurate occlusion position, and the resin material is more wear-resistant than the plaster material, and can not cause the situation that the false tooth is too tight or too loose because of the wear of the working model after being repeatedly worn and taken in the subsequent processing procedure, thereby the manufactured false tooth has higher precision.

Detailed Description

The present invention will be further described with reference to specific examples, but is not limited thereto.