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Malocclusion associated with abnormal posture.

Hideharu Yamaguchi1, Kenji Sueishi

  • 1Department of Orthodontics, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502, Japan.

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|September 6, 2003
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Abnormal oral functions and postures, like mouth breathing and tongue thrust, can deform jaw structures, leading to malocclusion and affecting body posture. These factors are closely interrelated, influencing maxillofacial development and overall oral health.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Physiology

Background:

  • Maxillofacial morphology and oral functions are intricately linked.
  • Malocclusion can arise from abnormal oral habits and muscle functions.
  • Oral function significantly impacts overall body posture.

Purpose of the Study:

  • To investigate the interrelationship between maxillofacial morphology, oral function, and body posture.
  • To identify how abnormal oral functions and postures contribute to malocclusion.
  • To analyze the influence of habitual behaviors on craniofacial development.

Main Methods:

  • Clinical observations of oral postures.
  • Examination of conditions like maxillary protrusion, open bite, anterior crossbite, and facial asymmetry.
  • Correlation analysis between abnormal postures and malocclusion types.

Main Results:

  • Abnormal oral functions (e.g., mouth breathing, tongue thrust) and postures (e.g., low tongue position) are associated with malocclusion.
  • Habitual forces on maxillofacial and alveolar regions cause bony deformation and jaw deformities.
  • Clinical observations confirmed correlations between unstable forces from abnormal postures and various malocclusions.

Conclusions:

  • Maxillofacial morphology, oral function, and body posture are closely interrelated and mutually influential.
  • Understanding these connections is crucial for diagnosing and treating malocclusion.
  • Interventions addressing oral function and posture may positively impact maxillofacial development.