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Related Experiment Videos

Comparison between implant-supported prostheses and teeth regarding passive threshold level

R Jacobs1, D van Steenberghe

  • 1Department of Periodontology (Laboratory of Oral Physiology), Faculty of Medicine, Catholic University of Leuven, Belgium.

The International Journal of Oral & Maxillofacial Implants
|January 1, 1993
PubMed
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Osseointegrated implants have a significantly higher threshold for tactile sensation compared to natural teeth. This suggests bone deformation, not direct stimulation, is key to implant sensory perception.

Area of Science:

  • Biomedical Engineering
  • Dental Implantology
  • Sensory Neuroscience

Background:

  • Osseointegrated implants are widely used for tooth replacement.
  • Understanding sensory feedback from implants is crucial for patient function and perception.
  • The tactile threshold of implants compared to natural teeth remains incompletely understood.

Purpose of the Study:

  • To determine and compare the passive tactile threshold of osseointegrated implants with natural teeth.
  • To investigate the influence of prosthesis type on implant sensory perception.
  • To elucidate the mechanism underlying sensory feedback from dental implants.

Main Methods:

  • A passive threshold determination was performed on 31 patients with osseointegrated implants (four prosthesis groups) and 10 controls with natural teeth.

Related Experiment Videos

  • A solenoid-driven device generated controlled forces, avoiding impact.
  • Forces were applied directly to the implant or tooth to assess sensory thresholds.

    • Main Results:

    • The tactile threshold for osseointegrated implants was found to be approximately 50 times higher than that of natural teeth.
    • This difference was observed when impact forces, which could trigger distant receptors, were avoided.
    • Different prosthesis types did not significantly alter the observed threshold differences.

    Conclusions:

    • Osseointegrated implants exhibit a markedly higher threshold for tactile sensation than natural teeth.
    • Bone deformation leading to periosteal mechanoreceptor activation is the most probable mechanism for implant sensory perception.
    • This finding has implications for understanding sensory feedback and patient proprioception with implant-supported prostheses.