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Occlusal measurement method can affect SEMG activity during occlusion.

S E Forrester1, R G Presswood, A C Toy

  • 1Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, UK.

Journal of Oral Rehabilitation
|February 15, 2011
PubMed
Summary

Occlusal indicators like T-Scan sensors and articulating paper can alter muscle activity during biting, potentially invalidating dental treatment measurements. Other indicators, such as Parkell and silk, showed no significant effect on muscle activity.

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Area of Science:

  • Dental Occlusion
  • Biomechanical Analysis
  • Electromyography

Background:

  • Occlusal indicators are crucial for assessing tooth contacts in dental treatments.
  • Existing indicators may interfere with natural occlusion mechanics, compromising data validity.

Purpose of the Study:

  • To evaluate the impact of four occlusal indicators (Parkell, silk, T-Scan sensor, paper) on surface electromyography (SEMG) activity during occlusion.
  • To assess the influence of these indicators on muscle activity and patient comfort.

Main Methods:

  • Twenty-three subjects performed maximal clenches with four different occlusal indicators and natural dentition.
  • Surface electromyography (SEMG) of anterior temporalis and superficial masseter muscles was recorded.
  • Subjective perception of indicator comfort and effect on occlusion was collected.

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Main Results:

  • T-Scan sensors and articulating paper significantly increased masseter muscle activity compared to natural dentition (P < 0.05).
  • Parkell and silk indicators did not significantly alter SEMG activity.
  • Subjects reported T-Scan sensors and paper as most affecting occlusion and least comfortable (P < 0.05).

Conclusions:

  • Certain occlusal indicators, specifically T-Scan sensors and thick articulating paper, can alter occlusal biomechanics and SEMG activity.
  • These alterations may compromise the accuracy of tooth contact measurements in dental treatment.
  • The choice of occlusal indicator is critical for obtaining valid data in occlusal analysis.