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Research into changes in canine maxillary trabecular bone orientation after tooth extraction.

H Igarashi1, T Hongo, M Kawase

  • 1Tokyo Dental College.

The Bulletin of Tokyo Dental College
|August 1, 1991
PubMed
Summary

Tooth extraction in canines significantly disrupts jaw bone structure. Reduced functional pressure after tooth loss leads to disorganized trabecular bone orientation, impacting jaw health.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Bone Biology
  • Biomechanical Engineering

Background:

  • Trabecular bone orientation is crucial for jaw bone structural integrity.
  • Functional pressure from teeth influences jaw bone morphology.
  • Tooth loss alters the mechanical loading environment of the jaw.

Purpose of the Study:

  • To investigate the morphological changes in jaw bone trabecular orientation following tooth extraction.
  • To understand the relationship between reduced functional pressure and bone structure.
  • To quantify changes in trabecular bone patterns over time after tooth loss.

Main Methods:

  • Canine specimens underwent extraction of all teeth on the right side of the upper and lower jaws.
  • Experimental periods ranged from 0.5 to 13 months post-extraction.

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  • Trabecular bone orientation was analyzed using an image analyzer to obtain morphometrical parameters.

    • Main Results:

    • Tooth extraction led to a significant reduction in applied functional pressure on the jaw bone.
    • Marked disordering of trabecular bone orientation was observed.
    • The degree of disorganization correlated with the time elapsed after tooth extraction.

    Conclusions:

    • Loss of teeth fundamentally alters the functional support system of the jaw.
    • Reduced mechanical loading due to tooth loss results in significant changes to trabecular bone architecture.
    • These findings highlight the importance of functional occlusion for maintaining jaw bone structure and integrity.