Design and manufacture method of incisal-end positioning windowless veneer without shoulder

A production method and veneer technology, which can be used in medical science, filling teeth, adding protective layers, etc., and can solve problems such as insufficient accuracy

Active Publication Date: 2021-02-12
NANJING PROFETA INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if there is no shoulder in the windowed veneer design, the final positioning accuracy of the veneer on the surface of the tooth preparation often cannot meet the requirements

Method used

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  • Design and manufacture method of incisal-end positioning windowless veneer without shoulder
  • Design and manufacture method of incisal-end positioning windowless veneer without shoulder
  • Design and manufacture method of incisal-end positioning windowless veneer without shoulder

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Embodiment Construction

[0019] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] A method for designing and manufacturing a shoulderless window-opening veneer with incisal positioning of the present invention has the following steps:

[0021] 1) Design the veneer wax pattern on the window-less veneer preparation model, using manual wax carving or computer-aided design;

[0022] 2) The gingival edge of the veneer wax pattern is designed as a 30-60 degree blade-like edge;

[0023] 3) The edge of the incisal end of the veneer wax-up is designed to be docked with the incisal end of the natural tooth;

[0024] 4) At the trisection position of the incisal edge of the veneer wax pattern, design two hook-shaped structures covering the incisal end of the tooth, with a width of about 0.5-1mm and a thickness of about 0.5mm;

[0025] 5) Use casting, CNC cutting or 3D printing methods to print wax patterns, or use CNC ...

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Abstract

The invention relates to a method for designing and manufacturing a shoulder-less window-opening veneer with incisal positioning, which comprises the following steps: 1) designing a veneer wax pattern on a shoulderless window-opening veneer preparation model, and computer-aided design; 2. ) The gingival edge of the veneer wax-up is designed to be a blade-like edge of 30-60 degrees; 3) The incisal edge of the veneer wax-up is designed to be in the shape of docking with the incisal end of the natural tooth; 4) The incisal edge of the veneer wax-up is third-class According to the position, design two hook-shaped structures covering the incisal ends of the teeth; 5) Use casting, CNC cutting or 3D printing methods to print wax patterns, or use CNC cutting or 3D printing methods to directly make veneers; 6) Use hook-shaped structures As a positioning termination, the finished veneer is bonded to the tooth, and then the hook structure is ground off and polished. The invention can significantly reduce the preparation amount of the tooth neck in the teeth veneer restoration, and improve the final positioning accuracy of the veneer on the surface of the tooth preparation.

Description

technical field [0001] The invention relates to the production of a tooth veneer, in particular to a design and production method of a shoulderless window-opening veneer with incisal positioning. Background technique [0002] At present, when restoring teeth with veneers, it is required to prepare shoulders at the neck of the teeth, and the amount of tooth preparation is large, which is prone to problems such as tooth sensitivity after treatment, edge not tight, edge micro-leakage, and even secondary caries. With the continuous development of veneer restoration materials, the production of 0.3mm or even thinner veneers is now supported, and the shoulder structure of the tooth neck can no longer be prepared. However, when designing a window-type veneer, if there is no shoulder, the final positioning accuracy of the veneer on the surface of the tooth preparation often cannot meet the requirements. Contents of the invention [0003] In order to overcome the above deficiencie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C5/20A61C19/00
CPCA61C19/00A61C5/20
Inventor 孙玉春钟伟秋周永胜王勇陈虎叶红强文超
Owner NANJING PROFETA INTELLIGENT TECH CO LTD
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