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Morphometric analysis of the Korean mandibular ramus for distraction osteogenesis using micro-computed tomography
Jae-Gi Lee1, Il-Soo Kim, Young-Woo Kim
1Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Center, Brain Korea 21 Project, Yonsei University College of Dentistry, Seoul, South Korea.
The Journal of Craniofacial Surgery
|January 18, 2011
Summary
This study measured mandibular bone thickness to guide distraction osteogenesis. Findings provide anatomical data for safer distractor placement, minimizing surgical complications.
Area of Science:
- Oral and Maxillofacial Surgery
- Anatomical Science
- Biomedical Engineering
Background:
- Distraction osteogenesis requires precise osteotomy placement.
- Current anatomical data for mandibular ramus osteotomy may be insufficient.
- Minimizing complications necessitates detailed topographic bone thickness information.
Purpose of the Study:
- To measure the topographic thickness of cortical and trabecular bone in the mandibular ramus.
- To determine the location of the mandibular canal (MC) relative to bone surfaces.
- To provide anatomical data for optimizing distractor placement in distraction osteogenesis.
Main Methods:
- Micro-computed tomography (micro-CT) was used to scan 40 Korean cadaveric mandibles.
- Three-dimensional reconstructions allowed for detailed cross-sectional imaging.
- Image analysis software measured bone thicknesses and MC proximity.
Main Results:
- Mean buccal cortical plate thickness was 2.9 mm, trabecular bone 9.1 mm, and lingual cortical plate 2.2 mm.
- The distance from the buccal surface to the MC varied from 5.3 to 10.0 mm.
- Significant morphometric variations were observed between sexes and across mandibular regions.
Conclusions:
- Detailed morphometric analysis of the mandibular ramus is crucial for osteotomy.
- This data aids in selecting optimal sites for distractor device placement.
- Understanding bone topography can significantly reduce complications during distraction osteogenesis.
