单侧完全性唇腭裂及非唇腭裂儿童青少年牙龄与颈椎骨龄的相关性研究-口腔医学专业论文.docx

万方数据 万方数据 硕士研究生： 薛青(口腔正畸学) 指导教师： 范存晖 副教授 关键词：唇腭裂；牙龄；颈椎骨龄；生长发育 Relativity for Dental Age , Cervical vertebral bone Age of Unilateral Complete Cleft Lip and Palate , non- Cleft Lip and Palate in Children and Adolescent Abstract Objective: To investigate the relationship between the dental age，cervical vertebral bone age among Unilateral Complete Cleft Lip and Palate Patients(UCLP) and non- Cleft Lip and Palate Patients ．In the mean time，provided a basis for orthodontic diagnosis and treatment with dental age of children and adolescents． Methods: Experiment1: Digital panoramic radiographs and lateral skull cephalograms of 215 (102 boys and 113 girls) non-Cleft Lip and Palate Patients were examined .Dental maturity was assessed by Demirjian, s method, whereas cervical vertebral bone maturity was estimated by Baccetti, s method. The Spearman rank-order correlation coefficient was used to analyze the dental age and cervical certebral bone age . Experiment 2: Digital panoramic radiographs and lateral skull cephalograms of 123(71 boys and 52 girls) Unilateral Complete Cleft Lip and Palate Patients were examined .Dental maturity was assessed by Demirjian, s method, whereas cervical vertebral bone maturity was estimated by Baccetti, s method. The Spearman rank-order correlation coefficient was used to analyze the dental age and cervical certebral bone age . Results: Experiment 1:The dental age of the canine , first premolar , second premolar, and second molar was significantly correlated with cervical certebral bone age in non-Cleft Lip and Palate patients（r=0.762~0.864）. The second molar was the tooth showing the highest correlation (boys r=0.864; girls r=0.815). Experiment 2:The dental age of the canine , first premolar , second premolar, and second molar was significantly correlated with cervical certebral bone age in UCLP patients （r=0.809~0.914）. The first premolar has the highest correlation（boys r=0.846,0.861; girls r=0.905,0.914）. Con