Digital designing and making method of individual tray without edentulous jaw function pressure

A production method and technology of edentulous jaws, applied in dentistry, compression molding cups, dental prostheses, etc., to improve the level of clinical treatment operation technology, improve the efficiency and quality of diagnosis and treatment

Active Publication Date: 2017-09-26
PEKING UNIV SCHOOL OF STOMATOLOGY
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Problems solved by technology

Therefore, the use of 3D printing technology to realize the digital production of individual trays of complete dentures has

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  • Digital designing and making method of individual tray without edentulous jaw function pressure

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Embodiment Construction

[0024] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Referring to Fig. 1, a digital design and manufacture method of an edentulous jaw function pressure individual tray of the present invention comprises the following steps:

[0026] 1. A method for digitally designing and manufacturing individual trays for edentulous jaw function pressure, comprising the following steps:

[0027] 1) Use impression paste or alginate to make an initial impression, which can be poured into a plaster model;

[0028] 2) Directly scan the initial impression or plaster model with a 3D scanner for edentulous jaws to obtain the 3D data of the tissue surface morphology of the initial impression or plaster model of the edentulous jaw;

[0029] 3) Import the scanned data into the reverse engineering software, intercept the tissue surface of the initial impression of the edentulous jaw, and obtain data1;

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Abstract

The invention relates to a digital designing and making method of an individual tray without edentulous jaw function pressure. The method includes: making an edentulous jaw preliminary impression; scanning the impression or a model to obtain data 1; scanning alveolar ridges of upper and lower jaws to obtain jaw position relation data 2; registering the data 1 to the data 2; completing undercut filling and buffering on the surfaces of the alveolar ridges of the upper and lower jaws; creating a dentition positioning coordinate system in the data 1; scanning a pair of upper-lower jaw dentition reference gypsum models to acquire data 3; creating a dentition posture coordinate system in the data 3; registering the data 3 to the data 1 through coordinate system registering; using a triangular grid to fill gaps between upper and lower jaw data 1 and the data 3 to acquire STL data of the individual tray; printing upper-lower jaw trays. The method replaces complex steps of conventional manual making, clinical operation steps are simplified, operation difficulty is lowered, and clinical diagnosis and treatment efficiency of edentulous jaw complete denture repair is improved.

Description

technical field [0001] The invention relates to the design and manufacture of individual trays for edentulous jaws, in particular to a digital design and manufacture method for individual trays for functional pressure of edentulous jaws. Background technique [0002] Taking the impression of the edentulous jaw is one of the most critical steps in the restoration of complete dentures. Factors related to impression quality include: tray, impression material, impression making method, etc. A tray is a tool used to carry oral impression materials and obtain dental impressions in the oral cavity. It can be divided into finished trays and individual trays. Although the process is simple when using the finished tray to make an edentulous working impression, it is difficult to accurately shape the edges of the impression due to the non-personalized shape of the finished tray, and the thickness of the impression material is uneven, resulting in poor impression accuracy. Studies hav...

Claims

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Application Information

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IPC IPC(8): A61C9/00
Inventor 孙玉春王勇赵甜陈虎邓珂慧周永胜叶红强
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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