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Related Concept Videos

Tooth Anatomy01:21

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The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
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Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
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Related Experiment Video

Updated: Apr 18, 2026

Mimicking and Measuring Occlusal Erosive Tooth Wear with the "Rub&Roll" and Non-contact Profilometry
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A GPU-implemented physics-based haptic simulator of tooth drilling.

M Razavi1, H A Talebi2,3, M Zareinejad3

  • 1Department of Robotic Engineering, Amirkabir University of Technology, Tehran, Iran.

The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS
|January 14, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces a haptics-based simulator for dental education, enhancing virtual reality tooth drilling with realistic force feedback. The system achieves real-time performance for improved training.

Keywords:
haptic systemsparallelismtooth drillingvirtual realityvoxel

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Area of Science:

  • Biomedical Engineering
  • Virtual Reality in Education
  • Haptic Simulation

Background:

  • Restorative dentistry simulation presents significant challenges in virtual reality (VR) and haptics.
  • Existing methods lack realistic force feedback for dental training.

Purpose of the Study:

  • To develop and present a haptics-based tooth drilling simulator for dental education.
  • To improve the realism and effectiveness of virtual dental training.

Main Methods:

  • A novel force model based on physical properties and the tool's geometrical model.
  • Uniform force feedback calculated using the physical properties of each tooth voxel.
  • A hashing algorithm for efficient collision detection and CUDA for GPU implementation.

Main Results:

  • Achieved an almost 8-fold increase in haptic loop execution speed through parallel processing.
  • Demonstrated uniform force sensation across different tooth layers.

Conclusions:

  • The developed force calculation method provides a uniform haptic sensation.
  • The simulator operates in real-time, offering a significant advancement for dental education.