Tooth loss and craniofacial factors associated with changes in mandibular condylar morphology.

Objective

To investigate the association between tooth loss and craniofacial factors with changes in mandibular condylar morphology.

Methods

A total of 123 patients participated in this cross-sectional study. The mandibular condylar morphology was evaluated using digital panoramic radiography. The exposure variables included gender, age group, molar relationship, facial growth pattern, facial asymmetry, dental midline, posterior crossbite, presence of fixed dental prosthesis, and tooth loss.

Results

Unilateral and bilateral mandibular condyle structural alterations were found in 20.3% and 28.5% of the sample, respectively. After the adjustment analysis, posterior crossbite (adjusted OR = 3.34, 95% CI = 1.23-9.06) and tooth loss (adjusted OR = 4.08, 95% CI = 1.72-9.64) were associated with the outcome. The tooth type associated with mandibular condyle structural alterations were premolars and upper molars.

Conclusion

The findings suggest that posterior crossbite and tooth loss are associated with mandibular condyle structural alterations.