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Related Experiment Videos

Skeletofacial changes by mandibular advancement using sagittal split osteotomies

M A Gomes1, P J Wisth, K Tornes

  • 1Department of Orthodontics and Facial Surgery, School of Dentistry, University of Bergen, Norway.

The International Journal of Adult Orthodontics and Orthognathic Surgery
|January 1, 1993
PubMed
Summary

Surgical mandibular advancement effectively corrected mandibular retrognathism, improving facial aesthetics. While some changes reversed post-treatment, long-term stability was observed.

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Patient satisfaction and oral health-related quality of life 10-15 years after orthodontic-surgical treatment of mandibular prognathism.

International journal of oral and maxillofacial surgery·2018

Area of Science:

  • Orthognathic Surgery
  • Craniofacial Surgery
  • Dental and Maxillofacial Surgery

Background:

  • Mandibular retrognathism presents a significant skeletal discrepancy.
  • Surgical mandibular advancement is a common treatment for this condition.
  • Understanding cephalometric changes is crucial for evaluating treatment outcomes.

Purpose of the Study:

  • To evaluate the cephalometric changes following surgical mandibular advancement in patients with mandibular retrognathism.
  • To assess the stability of these changes at 6 months postoperatively.

Main Methods:

  • Cephalometric analysis of 45 patients before surgery, at intermaxillary fixation release, and 6 months postoperatively.
  • Sagittal split osteotomies were used for mandibular advancement.

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Main Results:

  • Significant improvement in mandibular retrognathism and positive changes in facial morphology.
  • Anterior displacement and slight lengthening of the mandibular corpus were observed.
  • Increased anterior facial height and mandibular plane angle, with clockwise anterior and counterclockwise posterior rotation; gonial angle increased.
  • Dentoalveolar changes included uprighting of maxillary and mandibular incisors.
  • Partial reversal of some changes occurred during the postfixation period.

Conclusions:

  • Surgical mandibular advancement effectively corrects mandibular retrognathism and improves facial morphology.
  • The procedure leads to significant skeletal and dentoalveolar changes.
  • Long-term positive effects demonstrate considerable stability.