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Related Experiment Videos

Frontal-plane lateral border movements and chewing cycle characteristics.

B Rilo1, J Fernandez, L Da Silva

  • 1School of Dentistry, Faculty of Medicine and Odontology, Santiago de Compostela University, Santiago de Compostela, Spain. cisuru@usc.es

Journal of Oral Rehabilitation
|December 12, 2001
PubMed
Summary

This study analyzed dental contact during chewing in healthy adults. Findings reveal a positive correlation between closing phase dental contact distance and lateral path inclination, crucial for efficient food breakdown.

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Area of Science:

  • Dentistry
  • Biomechanics
  • Kinesiology

Background:

  • The dental contact section of the chewing cycle is critical for food trituration.
  • Understanding chewing cycle mechanics is essential for assessing oral function.

Purpose of the Study:

  • To determine closing phase dental contact distance and lateral path inclination in healthy subjects.
  • To investigate the relationship between these variables and Ahlgren chewing cycle types.

Main Methods:

  • Kinesiography was used to characterize the chewing cycle in 63 healthy subjects.
  • Dental contact distance, lateral path inclination, and Ahlgren chewing cycle type were recorded during chewing gum mastication.

Main Results:

  • 84% of subjects exhibited normal chewing cycles (Ahlgren types I-IV).

Related Experiment Videos

  • Mean dental contact distance was 0.9 mm (right) and 1.2 mm (left); mean lateral path inclination was 35° (right) and 37° (left).
  • A significant positive correlation was found between closing phase dental contact distance and lateral path inclination.

    • Conclusions:

    • Normal chewing cycles are typically bilateral, while abnormal cycles are not.
    • Chewing cycle type does not consistently influence border movement distance between 'chopping' and 'grinding' motions.
    • Dental contact distance and lateral path inclination are positively correlated, impacting chewing efficiency.