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Related Experiment Video

Updated: Dec 15, 2025

Less-Invasive Technique for Non-stabilized Mandibular Fracture in Mouse Models
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An Anatomic Predisposition to Mandibular Angle Fractures.

Brett L Seeley-Hacker1, Eric P Holmgren2, Christopher W Harper3

  • 1Student and Research Fellow, Thayer School of Engineering, Dartmouth College, Hanover, NH; and Medical Student, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY.

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|July 11, 2020
PubMed
Summary
This summary is machine-generated.

Mandibular angle fractures are linked to specific anatomical variations, including retromolar space and third molar presence. Identifying these features can help predict fracture risk and tailor treatments for patients.

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Area of Science:

  • Anatomy
  • Biomechanics
  • Forensic Anthropology

Background:

  • Mandibular angle fractures are common, but predisposing anatomical factors are not fully understood.
  • Previous studies have not comprehensively linked fracture risk to specific mandibular anatomical features.

Purpose of the Study:

  • To identify anatomical variations associated with mandibular angle fractures.
  • To compare fractured mandibles with healthy controls to determine risk factors.

Main Methods:

  • Retrospective study comparing 52 healthy mandibles with 44 fractured mandibles (CT scans).
  • Utilized MATLAB machine learning algorithms to analyze anatomical differences.
  • Measured features including retromolar space, cross-section perimeter, ramal breadth, oblique ridge thickness, transgonial angle, and mental foramen location.

Main Results:

  • Machine learning identified 6 key anatomical features differentiating fractured from healthy mandibles.
  • Third molar presence was significantly higher in fractured mandibles (72.7% vs. 26.9%).
  • Fractures often occurred through or near third molars (87.5% of cases with third molars).

Conclusions:

  • Significant anatomical differences exist between mandibles prone to angle fractures and those that are not.
  • A predictive model using 6 anatomical features can assess fracture risk.
  • Findings can aid clinicians in identifying at-risk individuals and developing patient-specific surgical treatments.