Mandibular condyle bone density in adolescents with varying skeletal patterns evaluated using cone-beam computed...

Area of Science:

• Orthodontics and Dental Anthropology
• Craniofacial Development
• Bone Densitometry

Background:

• Understanding mandibular condyle bone density is crucial for assessing adolescent skeletal patterns.
• Variations in facial height ratios and ANB angles indicate different skeletal growth directions.

Purpose of the Study:

• To evaluate mandibular condyle bone density in adolescents with diverse skeletal patterns.
• To test the hypothesis that there are no differences in condylar bone density across various skeletal classifications.

Main Methods:

• 120 adolescents were categorized by age, facial height ratio (Jarabak quotient), and ANB angle.
• Cone-beam computed tomography (CBCT) was used to measure total, cortical, and cancellous bone densities of the mandibular condyle.

Main Results:

• Cortical bone density significantly increased with age.
• Condylar bone density increased as facial height ratio decreased (hyperdivergent to hypodivergent).
• Cortical, cancellous, and total bone densities increased with increasing ANB angle (Class III to Class II).

Conclusions:

• The null hypothesis was rejected, indicating significant differences in condylar bone density.
• Condylar bone density is influenced by facial height ratio and ANB angle.
• These results can help predict vertical and horizontal skeletal growth in adolescents.