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HSD

Hochschule Düsseldorf
University of Applied Sciences


FB5

Fachbereich Medien
Faculty of Media

Labor für Virtuelles Studio / Virtuelle Realität



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Abstract: Visual Simulation of the Chewing Process for Dentistry

Karol Myszkowski, Galina Okuneva, Jens Herder, Tosiyasu L. Kunii, and Masumi Ibusuki. Visual Simulation of the Chewing Process for Dentistry, in Visualization & Modelling, pp. 419-438, Academic Press, ISBN 0-12-227738-4, 1997.

CAD/CAM techniques are increasingly used in dentistry for the design and fabrication of teeth restorations. Important concerns are the correction of articulation problems that existed before treatment and the prevention of treatment-generated problems. These require interactive evaluation of the occlusal surfaces of teeth during mastication. Traditional techniques based on the use of casts with mechanical articulators require manual adjustment of occlusal surfaces, which becomes impractical when hard restoration materials like porcelain are used; they are also time and labor consuming and provide little visual information. We present new visual tools and a related user interface for global articulation simulation, developed for the Intelligent Dental Care System project. The aim of the simulation is visual representation of characteristics relevant to the chewing process. The simulation is based on the construction of distance maps, which are visual representations of the distributions of the distances of points in a tooth to the opposite jaw. We use rasterizing graphics hardware for fast calculation of the distance maps. Distance maps are used for collision detection and for the derivation of various characteristics showing the distribution of load on the teeth and the chewing capability of the teeth. Such characteristics can be calculated for particular positions of the jaws; cumulative characteristics are used to describe the properties of jaw movement. This information may be used for interactive design of the occlusal surfaces of restorations and for jaw articulation diagnosis. We also demonstrate elements of a user interface that exploit metaphors familiar to dentists from everyday practice.

VirtuellesStudio

HSD FB 5 VSVR

27.07.2013

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