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Occlusal contact variation with changes in head position.

R J Chapman1, W L Maness, J Osorio

  • 1Tufts University, School of Dental Medicine, Boston 02111.

The International Journal of Prosthodontics
|July 1, 1991
PubMed
Summary
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Head posture significantly impacts initial tooth contacts in healthy adults. This study analyzed occlusal contacts in supine, sitting, and head-forward positions using T-Scan software.

Area of Science:

  • Dentistry
  • Biomechanics
  • Human Physiology

Background:

  • Occlusal contacts are crucial for proper jaw function.
  • Understanding how posture affects tooth contact dynamics is important for dental diagnostics and treatment.
  • Previous research has not fully quantified the influence of head position on initial occlusal contacts.

Purpose of the Study:

  • To investigate the influence of different head positions (supine, sitting, head forward) on initial occlusal contacts in healthy young adults.
  • To quantify the changes in the timing and location of the first five occlusal contacts based on head posture.

Main Methods:

  • Ten healthy young adults participated in the study.
  • Occlusal contacts were recorded using T-Scan special research software.

Related Experiment Videos

  • The 'time moment' of initial occlusal contacts was measured, integrating spatial and temporal data.
  • Student's t test was used to analyze differences between paired head positions.

    • Main Results:

    • Initial tooth contacts were found to be substantially influenced by head posture in healthy young adults.
    • Specific quantitative changes in the time moments of occlusal contacts were observed across the tested head positions.
    • Posture demonstrably alters the dynamics of initial tooth contact patterns.

    Conclusions:

    • Head posture is a significant factor affecting initial occlusal contacts.
    • The findings suggest that postural assessments should be considered in the evaluation of occlusal dynamics.
    • This research provides a quantitative basis for understanding posture-related occlusal variations.