Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing
Patent
1997-09-05
2000-04-11
Grant, William
Data processing: generic control systems or specific application
Specific application, apparatus or process
Product assembly or manufacturing
433172, G06F 1900
Patent
active
060497432
ABSTRACT:
A method of designing a dental prosthesis model, such as a bridge or a crown. The method includes measuring a three-dimensional configuration of a dentition of a subject in order to obtain configuration data of upper and lower jaw dentitions of a subject. The dentition configuration data is stored. Also stored is pontic model data defining standard pontic model configurations corresponding to the configurations of individual teeth. The pontic model is expressed as a combination of patches that are stored as configuration expression data, and morphology definition data indicating a characteristic morphology of the teeth of the pontic model. The pontic model data is read out, corresponding to a tooth or teeth where the dental prosthesis is to be placed. Based on the read-out pontic model data, crown model data indicating a crown region is made. The crown model data is displayed so that it can be superimposed on a dentition configuration diagram. The crown model is then deformed, by modifying the patches, for example, to form a desired gap with respect to formation of the dental prosthesis.
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Y. Shomura et al., "Three-Dimensional Measurement of Tooth Shape (Report 4)--Measurement of Z-Direction Movement with Laser Displacement Gauge", published in 'Dental Materials and Appliances, vol. 8, Special Issue 14 (1989).
New Common Dental Dictionary, published by Medical-Dental-Pharmaceutical Publishing House, pp. 127-128.
Grant William
Rapp Chad
Technology Research Association of Medical and Welfare Appartus
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