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Trabecular bone ratio of mandible using micro-computed tomography in Korean
Sung-Yoon Won1, Sung-Hyun Kim, Sung-Tae Kim
1Division in Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea.
The Journal of Craniofacial Surgery
|May 21, 2010
Summary
The trabecular bone ratio (TBR) in the mandible differs significantly based on tooth presence, sex, and age. Edentulous mandibles in males showed higher TBR than females, with age impacting dentate mandibles more than edentulous ones.
Area of Science:
- Oral and Maxillofacial Radiology
- Bone Biology
- Biomaterials Science
Background:
- Cortical and trabecular bone are crucial for skeletal integrity.
- Decreased bone mineral density is linked to aging, sex, and tooth loss.
- Previous research often relied on conventional radiography, with limited data from Korean populations.
Purpose of the Study:
- To investigate the trabecular pattern of the mandible using micro-computed tomography.
- To analyze the trabecular bone ratio (TBR) in relation to dentition, sex, and age.
- To provide population-specific data for the Korean demographic.
Main Methods:
- Micro-computed tomography (micro-CT) was used to scan 39 human mandible specimens.
- Three-dimensional reconstruction and sectioning parallel to tooth axes were performed.
- Trabecular bone ratio (TBR) was quantified and statistically analyzed using one-way ANOVA.
Main Results:
- A significant difference in TBR was observed between dentate and edentulous mandibles in the molar region.
- Edentulous mandibles in males exhibited a greater TBR compared to females.
- Dentate mandibles showed a regular decrease in TBR with age, unlike edentulous mandibles.
Conclusions:
- Mandibular trabecular bone structure significantly varies with the presence of teeth, sex, and age.
- Micro-CT analysis provides detailed insights into mandibular bone quality.
- Findings highlight the importance of considering demographic factors in assessing mandibular bone health.
