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Reconstructive preprosthetic surgery. I. Anatomical considerations.

J I Cawood1, R A Howell

  • 1Maxillofacial Unit, Royal Infirmary, Chester, UK.

International Journal of Oral and Maxillofacial Surgery
|April 1, 1991
PubMed
Summary
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Understanding anatomical changes in edentulous jaws is crucial for preprosthetic surgery. This study classifies jaw resorption stages to analyze effects on jaw relationships, muscle function, oral tissues, and facial form.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Dental Anatomy
  • Biomechanical Engineering

Background:

  • Preprosthetic surgery aims to optimize the jaw foundation for dental prostheses.
  • Residual ridge resorption significantly alters jaw anatomy after tooth loss.
  • A comprehensive understanding of these anatomical changes is essential for successful surgical outcomes.

Purpose of the Study:

  • To investigate the anatomical consequences of residual ridge resorption in edentulous jaws.
  • To establish a classification system for edentulous jaws based on resorption stages.
  • To quantify changes in jaw relationships, muscle function, oral mucosa, and facial morphology relative to resorption severity.

Main Methods:

  • Development of a classification system for edentulous jaws.

Related Experiment Videos

  • Measurement of anatomical parameters including inter-jaw relationships, muscle function, oral mucosal status, and facial morphology.
  • Correlation of measured changes with the defined stages of residual ridge resorption.

    • Main Results:

    • Significant alterations in jaw-to-jaw relationships were observed with increasing resorption.
    • Changes in muscle attachments and function were documented.
    • Alterations in oral mucosa and facial esthetics were directly related to the degree of jaw resorption.

    Conclusions:

    • The proposed classification system aids in understanding the anatomical sequelae of edentulous jaw resorption.
    • Clinicians must consider these anatomical changes for effective preprosthetic surgical planning.
    • Further research can refine treatment strategies based on resorption-based anatomical analysis.