Abstract: Objective To explore the potential connections between different growing periods, vertical skeletal patterns, classification of malocclusion and the thickness of mandibular alveolar bone in anterior area in adolescence. Methods　149 adolescences with class I, II, III skeletal malocclusion and different vertical skeletal patterns were enrolled. The thickness of mandibular alveolar bone in anterior area was explored by CBCT. Results　The buccal bone thickness of mandibular anterior teeth in malocclusion adolescents was 0.56-4.11mm. The thickness of mandibular anterior teeth in males was 0.56-4.30mm, while the thickness in females was 0.56-3.89 mm. Individuals in class II, III skeletal malocclusion with high vertical skeletal patterns subgroups were identified to have thinner buccal bone (Class II 0.43-3.40mm, Class III 0.49-3.31mm) in mandibular anterior teeth than those in average and low patterns (Class II 0.61-4.41mm, Class III 0.52-4.62.mm)(p<0.05). Conclusions　 The thickness of buccal mandibular alveolar bone in anterior area in malocclusion individual’s was influences by the growth and development phases of adolescence, skeletal malocclusion types and vertical skeletal pattern. The buccal mandibular alveolar bones in male were thicker than than those in females.

Key words: cervical vertebral maturation index, alveolar bone thickness, malocclusion, adolescent