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A novel computational method to determine subject-specific bite force and occlusal loading during mastication.

Oliver Röhrle1,2,3, Harnoor Saini1, Peter V S Lee4

  • 1a Institute of Applied Mechanics (Civil Engineering) , University of Stuttgart , Stuttgart , Germany.

Computer Methods in Biomechanics and Biomedical Engineering
|July 17, 2018
PubMed
Summary

This study introduces a new method to measure dynamic occlusal forces during chewing using 3D motion capture and finite element analysis. This allows for accurate prediction of biting forces and pressure distributions, aiding dental restoration design.

Keywords:
Biomechanicsbite forcechair sidefinite element methodjawkinematics

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Area of Science:

  • Biomaterials Science
  • Biomechanics
  • Dental Engineering

Background:

  • Accurate evaluation of three-dimensional occlusal loading is crucial for dental applications.
  • Current methods lack direct measurement of dynamic force and pressure distributions during mastication.
  • Understanding occlusal loading aids in developing dental materials, restorations, and prosthodontic components.

Purpose of the Study:

  • To evaluate subject-specific occlusal loading forces during mastication.
  • To develop a novel modeling methodology for dynamic occlusal loading analysis.
  • To compute contact pressures and forces on occlusal surfaces during chewing.

Main Methods:

  • Obtained jaw motion data from dynamic chewing cycles on a rubber sample.
  • Utilized a finite element model simulation incorporating subject-specific dental impressions.
  • Imposed measured jaw motions onto a 3D geometric surface model.
  • Computed stresses, contact pressures, and forces based on rubber deformation and material properties.

Main Results:

  • Developed a novel modeling methodology for evaluating dynamic occlusal loading.
  • Enabled prediction of dynamic occlusal pressure maps and biting forces with high accuracy.
  • Demonstrated the ability to compute stresses, contact pressures, and forces at each time step.

Conclusions:

  • The novel modeling approach accurately predicts dynamic occlusal loading during biting and chewing.
  • This methodology can assist in the development of new dental materials and restorations.
  • The technique shows potential for chair-side automation, enhancing clinical applications.