安氏Ⅲ类错（牙合）畸形固定矫治器治疗效果的评价  

Evaluation to the effect of fixed appliance treatment for class Ⅲ malocclusion

作　　者：刘欢叶[1] 冯翠娟[1] 赵明[2] 张扬[1] 

机构地区：[1]中国医科大学附属口腔医院正畸科,辽宁沈阳110001 [2]沈阳奥新口腔医院

出　　处：《中国美容整形外科杂志》2009年第7期425-428,共4页Chinese Journal of Aesthetic and Plastic Surgery

摘　　要：目的 通过对安氏Ⅲ类错（牙合）畸形患者治疗前后X线头影测量指标的研究，评价固定矫治器治疗前后安氏Ⅲ类患者（牙合）、颌、面的变化。方法 随机选择30例固定矫治器治疗的安氏Ⅲ类错（牙合）患者，男性12例，女性18例。年龄10～17岁。全部患者治疗前后的X线头颅侧位片经Winceph8．0头影测量软件进行分析，测量18个标志点，结果经一致性检验后，将均值进行配对t检验，比较治疗前后指标差异。结果 与矫治前相比，SNA角、ANB角、颌凸角、上下齿槽座角、上下唇至审美平面距以及前后向异常指数都有显著性差异（P〈0．01），上切牙唇倾度加大（P〈0．05）。结论 在严格选择适应证的前提下，固定矫治技术可成功矫治恒牙早期及恒牙期安氏Ⅲ类错（牙合）畸形，使患者的骨骼和软组织侧貌得到明显的改善。Objective To estimate the occlusion and maxillofacial changes of the patients with class Ⅲ malocclusion by research the indexes of cephalometry of pre-and post-treatment. Methods 30 patients of class Ⅲ malocclusion treated by the fixed appliance （male 12, female 18, age range 10 - 17 years old） were randomly selected. Lateral cephalometfic films taken at the beginning and the end of treatment were analyzed by the Winceph 8.0 cephalometric software. Following the consistency check, paired-samples T test of 18 signs were taken out to compare the difference indexes of pre- and post-treatment. Results After active treatment, SNA, SNB, Convexity, AB-plane, E-lower lip, E-upper lip and APDI all have significant difference （ P 〈 0.01 ）, the labia-inclination of upper incisors was increased （ P 〈 0.05 ）. Conclusion The study suggest that, at the premise of strictly select indication, success in treatment of patients of class Ⅲ malocclusion in early period of permanent dentition and period of permanent dentition can be achieved with fixed appliance. A remarkable changes of skeleton and soft-tissue were noted after the treatment.

关 键 词：安氏Ⅲ类错(牙合) 固定矫治器 头影测量 

分 类 号：R78[医药卫生—口腔医学]