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Toward Stable and Realistic Haptic Interaction for Tooth Preparation Simulation

Identifieur interne : 003E50 ( Main/Exploration ); précédent : 003E49; suivant : 003E51

Toward Stable and Realistic Haptic Interaction for Tooth Preparation Simulation

Auteurs : JUN WU [République populaire de Chine, Hong Kong] ; DANGXIAO WANG [République populaire de Chine] ; Charlie C. L. Wang [Hong Kong] ; YURU ZHANG [République populaire de Chine]

Source :

Journal of computing and information science in engineering [ 1530-9827 ] ; 2010.

RBID : Pascal:11-0001210

Descripteurs français

Pascal (Inist)
- Simulateur, Usinage, Dentisterie, Mise à jour, Image tridimensionnelle, Sensibilité tactile, Chirurgie, Rectification surface, Forme complexe, Perception sensorielle, Modélisation, Sensation, Equation mouvement, Stabilité numérique, Discontinuité, Etude expérimentale, Voxel, ..
Wicri :
- topic : Chirurgie.

English descriptors

KwdEn :
- Complex shape, Dentistry, Discontinuity, Equation of motion, Experimental study, Grinding, Machining, Modeling, Numerical stability, Sensation, Sensorial perception, Simulator, Surgery, Tactile sensitivity, Tridimensional image, Updating, Voxel.

Abstract

In this paper, we present the methods to generate a stable and realistic simulator for dental surgery. First, a simplified force model is derived from grinding theory by considering the complex bur shape and dental handpiece's dynamic behavior. While the force model can be evaluated very fast to fulfill the high update rate of haptic rendering, it also explains basic haptic sensation features in tooth preparation operation. Second, as direct rendering of this damping-like force model may induce instability of the haptic device, we apply a virtual coupling based method to guarantee the stability in haptic rendering. Furthermore, implicit integration of the bur's motion equation is utilized to ensure numerical stability. Third, to overcome force discontinuity caused by locally removing tooth materials, we define a two-layer based representation for the bur, where the boundary voxels are adopted to compute forces and the interior voxels are employed to remove materials from teeth. The experimental results agree with the real sensation described by experienced dentists.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">In this paper, we present the methods to generate a stable and realistic simulator for dental surgery. First, a simplified force model is derived from grinding theory by considering the complex bur shape and dental handpiece's dynamic behavior. While the force model can be evaluated very fast to fulfill the high update rate of haptic rendering, it also explains basic haptic sensation features in tooth preparation operation. Second, as direct rendering of this damping-like force model may induce instability of the haptic device, we apply a virtual coupling based method to guarantee the stability in haptic rendering. Furthermore, implicit integration of the bur's motion equation is utilized to ensure numerical stability. Third, to overcome force discontinuity caused by locally removing tooth materials, we define a two-layer based representation for the bur, where the boundary voxels are adopted to compute forces and the interior voxels are employed to remove materials from teeth. The experimental results agree with the real sensation described by experienced dentists.</div>
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Toward Stable and Realistic Haptic Interaction for Tooth Preparation Simulation

Toward Stable and Realistic Haptic Interaction for Tooth Preparation Simulation

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri