安氏Ⅱ~2错正畸治疗前后髁突位置的锥束CT观察  

CBCT observation of condylar position changes in class Ⅱ division 2 patients who received orthodontic treatment

作　　者：张冬林[1] 乐群[1] 费瑛[1] 陈捷[1] 蒋丽萍[1] 

机构地区：[1]上海交通大学医学院附属新华医院口腔科,上海200092

出　　处：《临床口腔医学杂志》2011年第11期675-677,共3页Journal of Clinical Stomatology

摘　　要：目的:通过锥束CT观测并评价安氏Ⅱ2错病例正畸治疗前后髁突位置的变化。方法:对17例安氏Ⅱ2错病例进行正畸治疗,分别于治疗前后拍摄双侧颞颌关节(TMJ)锥束CT片,进行t检验比较关节间隙的线性测量数值。结果:TMJ前间隙、后间隙在正畸治疗前后比较,有显著性差异(P<0.05);TMJ前、后间隙比值较治疗前明显缩小(P<0.05)。患者主诉TMJ区不适症状缓解,髁突位置基本居中。结论:正畸治疗安氏Ⅱ2错,可使髁突向前下方移动,使得RCP与ICP2位者比例增加,恢复了、肌肉、关节正常的平衡关系,有利于改善TMJ功能。锥束CT的应用使TMJ结构的变化得以量化,能对正畸治疗效果进行客观评价。Objetive：To observe and evaluate the condylar postion changes by CBCT in Class Ⅱ division 2 patients who received orthodontic treatment.Method：17 cases of Class Ⅱ division 2 patients were received orthodontic treatment.Bilateral CBCT of TMJ at intercuspal position were taken before and after treatment,respectively.The TMJ spaces were measured and statistically analysed.Result：The linear distances of TMJ spaces show significant difference before and after orthodontic treatment（P 0.05）.The ratio between anterior and posterior TMJ spaces show significant differences compared to pretreatment（P 0.05）.The condyles′position were in centric.The symptoms of TMD were alleviated.Conclusion：The condylar position in Class Ⅱ division 2 patients could be orthodontically changed,moving anterior-inferiorly and approaching RCP.Orthodontic treatment can also recover the harmony relationship among occlusion,muscles and TMJ.Meanwhile,application of CBCT can directly get quantitative change of TMJ and make objective estimate to orthodontic treatment outcomes.

关 键 词：锥束CT 安氏Ⅱ类2分类 髁突位置 

分 类 号：R783.5[医药卫生—口腔医学] R816.98[医药卫生—临床医学]