Abstract:

Objective

To study the AF-BF distance and AXB angle of patients with cleft lip and palate.

Methods

Lateral cephalograms were taken for 20 children with mixed dentition and 30 adolescents with permanent dentition.AF-BF distance and AXB angle were measured and compared with those of Beijing children and adolescents with normal occlusion.

Results

There were no differences in AF-BF distance and AXB angle between male and female children with mixed dentition and adolescents with permanent dentition （P ＞0.05）.AF-BF distance of Xinjiang children with mixed dentition and adolescents with permanent dentition were smaller than those of Beijing children and adolescents with normal occlusions （P ＜0.05）， but there was no difference in AXB angle （P ＞0.05）.

Conclusions

AF-BF distance can be used as one of the clinical parameters to evaluate the anterior-posterior relationship between the maxilla and mandible of cleft lip and palate patients.

Key words: Cephalometric analysis, Cleft lip and palate, Orthodontics, Anteriorposterior jaw relationship, AF-BF distance, AXB angle