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Occlusal wear evaluation apparatus and occlusal wear evaluation method

a wear evaluation apparatus and occlusal technology, applied in the field of occlusal wear evaluation apparatus and occlusal wear evaluation method, can solve the problem of a lot of jaw inclines

Inactive Publication Date: 2013-02-28
SHOFU INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an apparatus and method for evaluating the wear of dentures. The apparatus calculates the angle between the maxillary and mandibular dental arches when the denture is in a centric occlusal position. This allows for the quantitative recognition of uneven wear on dentures. A countermeasure, such as increased contacting area in the most used portion of the denture, can be taken to reduce uneven wear.

Problems solved by technology

In a denture, because a portion where is heavily used tends to be greatly worn, a lot of jaws inclines when an occlusion due to an uneven wear.

Method used

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  • Occlusal wear evaluation apparatus and occlusal wear evaluation method
  • Occlusal wear evaluation apparatus and occlusal wear evaluation method
  • Occlusal wear evaluation apparatus and occlusal wear evaluation method

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Embodiment Construction

[0022]Hereinafter, an embodiment of the present invention is described with referring drawings. An occlusal wear evaluation apparatus according to the present invention can be realized using a computer system that comprises an arithmetic device 1, a data input device 2, a display device 3 and a user input device 4 as shown in FIG. 1.

[0023]The arithmetic device 1 can be substantialized using a personal computer and a software program, while the arithmetic device 1 may be exclusively designed. The data input device 2 can be not only an apparatus such as three dimensional scanner reading directory three dimensional shape, but also a device for inputting three dimensional data which is read by an external three dimensional scanner and the like into the arithmetic device 1, such as a media reading device, for instance a memory device or a disc drive, or a data communication device. The display device 3 may be a common display. As the user input device 4, a generalized input device such a...

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Abstract

An occlusal wear evaluation apparatus capable of evaluating quantitatively an occlusal wear of a used denture reads three dimensional data of a denture before use and three dimensional data of the denture after use, calculates a difference in a set value of an articulator allowing the maxillary dental arch and the mandibular dental arch of the denture to occlude between the denture before use and the denture after use, by way of simulating movements of a jaw in the articulator with the three dimensional data of the denture before use and the three dimensional data of the denture after use, and indicates the calculated difference.

Description

TECHNICAL FIELD[0001]The present invention relates to an occlusal wear evaluation apparatus and an occlusal wear evaluation method.BACKGROUND ART[0002]Generally, a denture should be re-configured periodically. Because, a condition in an oral cavity and a muscle force of a patient change over time, an optimum denture for the patient can not be made by only reconstructing a shape before occlusal wear (abrasion due to dental occlusion) of a presently used denture. Therefore, a dental technician observes a condition of the occlusal wear of the used denture to image an optimum shape of a denture for the patient so as to determine detailed configuration of a denture to be newly made. For instance, in a case of that the used denture has been unevenly worn, a cusp is adjusted in its shape and position so that a particularly worn part will be hard to be worn and the other part will be easy to be worn.[0003]When making a denture in such way, a detailed configuration of the denture is determin...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F15/00
CPCA61C11/00A61C13/0004G06F19/3437A61C19/05A61C19/04G16H50/50
Inventor KADOBAYASHI, YUSEISHIGEZAWA, MASAKOTAKAHASHI, KEIJI
Owner SHOFU INC
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