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A novel sensor for bite force determinations.

Cláudio P Fernandes1, Per Olof J Glantz, Stig A Svensson

  • 1Department of Prosthetic Dentistry, Faculty of Odontology, Lund University, Malmö, Sweden. claudiof@lab.uva.br

Dental Materials : Official Publication of the Academy of Dental Materials
|January 25, 2003
PubMed
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A new bite force sensor accurately measures forces in patients with removable partial dentures. This reliable sensor offers higher precision for biomechanical studies of prosthetic appliances.

Area of Science:

  • Biomedical Engineering
  • Dental Prosthetics
  • Biomechanics

Background:

  • Assessing bite force is crucial for understanding the biomechanics of prosthetic appliances.
  • Existing methods for bite force measurement may have limitations in accuracy and precision.

Purpose of the Study:

  • To evaluate the clinical usefulness, accuracy, and precision of a novel bite force sensor.
  • To compare the novel sensor's performance against a traditional bite fork transducer.

Main Methods:

  • A novel bite force sensor using force sensing resistors was developed with a silicone surface.
  • Standardized bite force tests were conducted on six subjects with removable partial dentures.
  • Data was collected using the novel sensor and a strain-gaged bite fork, with visual feedback for subjects.

Related Experiment Videos

Main Results:

  • The novel sensor showed no statistically significant difference in intra-individual bite force levels compared to the bite fork (50-300N).
  • Bite forces were dependent on loading position, sex, and test subject (p<0.05).
  • The sensor demonstrated 93% reliability for submaximum bite forces and offered higher precision than the bite fork, with less variance in strain patterns (p<0.05).

Conclusions:

  • The novel bite force sensor is clinically useful, accurate, and precise.
  • Its high reliability and precision make it suitable for experimental clinical studies on prosthetic appliance biomechanics.