Manufacturing method of functional area tooth preparation guide plate and detachable drill limiter

Abstract

The invention relates to a manufacturing method of a functional area tooth preparation guide plate and a detachable drill limiter. The method comprises the following steps that a tooth required to besubjected to tooth preparation and adjacent teeth are scanned; the three-dimensional shape of a tooth preparation body is designed by using three-dimensional reverse engineering software; a guide groove capable of guiding the motion path of a dental drill in the whole process in the key functional area preparation process is designed in the guide plate; the dental crown data surfaces of the adjacent teeth are each thickened to be a thin wall with the thickness of 1-4 mm; the guide plate is machined into an entity through a three-dimensional printer or numerical control machining equipment; thedetachable drill limiter is designed to be matched with a hemispherical groove in the top of the guide plate; and after the guide plate is completely in place on a dentition model, accurate tooth preparation of the corresponding area can be completed according to the designed tooth preparation amount. According to the method, the accuracy and efficiency of tooth preparation of the key functionalareas such as the axial surface, the edge, the guide plane (the tooth preparation guide plate is shown in the description) and a jaw support fossa of a base tooth in the fixed repair and removable repair process can be improved, and popularization and application can be facilitated.

Description

technical field [0001] The invention relates to a tooth preparation guide plate, in particular to a preparation method of a tooth preparation guide plate in a functional area and a detachable bur limiter. Background technique [0002] Both fixed dentures and removable partial dentures require accurate tooth preparation. At present, manual visual inspection of tooth preparation is the mainstream method, but in the axial surface and shoulder area of ​​fixed denture tooth preparations, removable partial denture guide plane, In restorative fossae, interstitial grooves and other areas, the accuracy of manual tooth preparation is difficult to guarantee, and problems such as insufficient or over-preparation are prone to occur, which will affect the restoration effect. At present, various types of tooth preparation guide plates have appeared at home and abroad, but their design and application schemes have high requirements on the opening degree, and special custom-made burs are r...

AI Technical Summary

Problems solved by technology

At the same time, it can avoid the limitations of the existing tooth preparation guide plate technology, such as excessive requirements on the opening degree, the need to make special burs, high application cost due to complicated design and manufacture, and is not conducive to popularization, etc., and improve the clinical practicability of the tooth preparation guide plate

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