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Related Experiment Video

Updated: May 7, 2026

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Relationship between orofacial function, dentofacial morphology, and bite force in young subjects.

M C S Marquezin1, M B D Gavião, M B C C Alonso

  • 1Department of Pediatric Dentistry, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Brazil.

Oral Diseases
|October 10, 2013
PubMed
Summary

This study found that older age and sleep bruxism correlate with poorer orofacial function. Increased overbite and a closed lip posture were associated with better orofacial function in young subjects.

Keywords:
bite forcebruxismcephalometrydental occlusion

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Area of Science:

  • Dentofacial Orthopedics
  • Pediatric Dentistry
  • Speech-Language Pathology

Background:

  • Orofacial function is crucial for overall health and development.
  • Understanding factors influencing orofacial function in young individuals is essential for early intervention.
  • Previous research has explored links between morphology and function, but comprehensive analysis in mixed and permanent dentition is ongoing.

Purpose of the Study:

  • To investigate the associations between orofacial function, dentofacial morphology, and bite force in a cohort of young subjects.
  • To identify specific morphological and functional parameters that correlate with orofacial dysfunction.
  • To provide insights for targeted therapeutic strategies in pediatric orofacial care.

Main Methods:

  • A cross-sectional study involving 316 subjects across different dentition stages.
  • Orofacial function was assessed using the Nordic Orofacial Test-Screening (NOT-S).
  • Evaluated variables included orthodontic treatment need, bite force, craniofacial dimensions, and sleep bruxism, analyzed via statistical methods including regression analysis.

Main Results:

  • Age and the presence of sleep bruxism were significantly associated with higher NOT-S scores, indicating poorer orofacial function.
  • Increased overbite measurement and a closed lip posture were linked to lower NOT-S scores, suggesting better orofacial function.
  • Bite force and most craniofacial dimensions did not show significant correlations with orofacial dysfunction scores.

Conclusions:

  • Age and sleep bruxism are key factors associated with diminished orofacial function in young individuals.
  • Specific dentofacial characteristics, such as increased overbite and a closed lip posture, may be protective factors for orofacial function.
  • The findings highlight the complex interplay between developmental stage, habits, and orofacial function, guiding future clinical assessments and interventions.