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Related Experiment Videos

Relationship between bilateral condylar bone change and mandibular morphology: a study using morphometry.

Bashar Alkhamrah1, Kazuhiro Yamada, Masaki Yamaki

  • 1Department of Oral Biological Science, Graduate School of Medical and Dental Sciences, Niigata University, Japan.

The International Journal of Adult Orthodontics and Orthognathic Surgery
|October 2, 2002
PubMed
Summary

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Bilateral condylar bone change (BCBC) in Japanese women is linked to significant mandibular alterations. This condition affects condylar process, ramus height, and overall mandibular shape, suggesting BCBC influences the entire mandible.

Area of Science:

  • Orthodontics
  • Craniofacial Morphology
  • Biotechnology

Background:

  • Bilateral condylar bone change (BCBC) is a condition affecting the temporomandibular joint.
  • Understanding its impact on mandibular morphology is crucial for diagnosis and treatment.

Purpose of the Study:

  • To investigate the relationship between bilateral condylar bone change (BCBC) and mandibular morphology in Japanese women.
  • To compare craniofacial characteristics of individuals with BCBC to Class I and Class II malocclusion groups.

Main Methods:

  • Computed tomography (CT) scans and cephalograms were used for analysis.
  • Cephalometric analysis, Procrustes analysis, Euclidean distance matrix analysis (EDMA), and thin-plate spline (TPS) analysis were employed.
  • 14 homologous landmarks were digitized and analyzed for morphological differences.

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Main Results:

  • BCBC group showed significant shrinkage in condylar process and ramus height, and shorter body length compared to Class I.
  • Centroid size indicated smaller mean geometric forms in BCBC individuals than in Class I and Class II groups.
  • EDMA and TPS analyses revealed specific changes including altered condylar slopes, ramus height, condylar width, antegonial notching, and symphysis expansion.

Conclusions:

  • Bilateral condylar bone change (BCBC) is associated with distinct mandibular morphological alterations.
  • These findings suggest that BCBC may influence not only the condyle but also the development of the entire mandible.