Measurements Of Gingival Thickness And Bone Thickness Of Adolescent Skeletal â…  Malocclusion In Bimaxillary Anterior Region

Objective To measure gingival and bone thickness in bimaxillary anterior region of adolescent skeletal I malocclusion on cone-beam computed tomographic(CBCT) sections, establishes clinical reference of treating adolescent malocclusion patients.Methonds Twenty-seven tomographys of subjects with adolescent skeletal I malocclusion (Male:14 cases;Female:13 cases) were selected for this study. The following parameters were measured on the sections corresponding to 12 anterior teeth with the iCAT softeware:gingival thickness:gingival margin,enamelo-cemental junction,2mm、3mm、4mm apical to alveolar crest.;bone thickness:2mm、3mm、4mm apical to alveolar crest and apical region.All datas were progressed by SPSS 19.0 software.Outcome Palatal thickness in the maxillary anterior teeth was greater than mandible(p<0.05);Labiolingual thickness in the lateral incisors was greater than mandible(p<0.05);Male thick gingival biotype was more than female (male 14.9%> female7.7%),The majority of female was thin gingiva biotype (92.3%). The thin gingiva biotype was the major type in the mandible(94%). There is no gender differences in intermaxillary bone dimensions (P>0.05); Largely,bone thickness in the maxillary anterior teeth was greater than mandible(p<0.05).Conclusion Palatal thickness in the maxillary anterior teeth was greater than mandible; The labial gingival thickness in the female, mandible was thinner.Bone thickness in the maxillary anterior teeth was greater than mandible.