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Digital preparation method of edentulous jaw individual impression tray

A technology of impression tray and edentulous jaw, applied in dentistry, compression molding cup, dental prosthesis, etc., to improve the level of clinical treatment operation technology, improve the efficiency and quality of diagnosis and treatment

Active Publication Date: 2015-11-25
PEKING UNIV SCHOOL OF STOMATOLOGY
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  • Description
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AI Technical Summary

Problems solved by technology

Therefore, the use of 3D printing technology to realize the digital production of individual trays of complete dentures has the characteristics of fast, accurate, efficient, convenient and timely, but there are no related reports at home and abroad.

Method used

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  • Digital preparation method of edentulous jaw individual impression tray
  • Digital preparation method of edentulous jaw individual impression tray
  • Digital preparation method of edentulous jaw individual impression tray

Examples

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Embodiment Construction

[0028] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] see figure 1 , a digital preparation method of an edentulous personalized impression tray of the present invention, comprising the following steps:

[0030] 1. A digital preparation method for an edentulous personalized impression tray, comprising the following steps:

[0031] 1) Use impression paste or alginate to make an initial impression, which can be poured into a plaster model;

[0032] 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;

[0033] 3) Import the scanned data into the reverse engineering software, extract the fold line of the tissue surface mucosa of the edentulous primary impression as the edge line, and use the edge line as the boundary to inte...

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Abstract

The invention relates to a digital preparation method of an edentulous jaw individual impression tray. The method comprises the following steps: preparing a preliminary impression, or forming a plaster model by pouring; scanning the preliminary impression or scanning the plaster model; introducing scanning data into reverse engineering software and intercepting tissue surface point cloud data of the edentulous jaw preliminary impression; acquiring point cloud data of undercut-free alveolar ridge surface; uniformly enlarging the alveolar ridge surface by 1-2mm in the normal direction of the alveolar ridge surface so as to obtain a virtual tray inner surface; uniformly thickening the virtual tray inner surface by 2mm in the normal direction thereof; designing an upper jaw virtual tray handle and a lower jaw virtual tray handle; and fusing data boundaries of the inner and outer surfaces of the virtual tray as well as the handle and saving the data in an STL format, importing the data into a computer system connected to 3D printing equipment, and making the edentulous jaw individual impression tray from a polymethyl methacrylate (PMMA) material by virtue of the 3D printing equipment. The digital designing and manufacturing method of the edentulous jaw individual impression tray can replace traditional hand-made manufacturing method.

Description

technical field [0001] The invention relates to the production of an edentulous jaw impression tray, in particular to a digital preparation method of an edentulous jaw personalized impression tray. Background technique [0002] 1. At present, the production technology of individual trays of manual complete dentures in clinical application at home and abroad [0003] There are 4 key steps in making a complete denture: impression, model, collar relationship (including occlusal balance), tooth arrangement and base shape. Among them, impressions and models are the basis. Only with accurate impressions and models can complete dentures be well retained. However, it is feasible to take an impression with the help of a public tray for removable partial dentures. For complete dentures, the public tray is roughly similar to the edentulous oral tissue of a specific patient, and the distance between the two parts is uneven. , the gap between the edge and the mucosal refraction line is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C9/00
Inventor 孙玉春吕培军王勇周永胜陈李彤
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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