前方牵引与头帽颏兜联合治疗安氏Ⅲ类错的预后估计  

Prediction of outcome of malocclusion class Ⅲ after combined maxillary protraction and chin cup aplliance treatment

作　　者：沈红 王燕 刘文 

机构地区：[1]青岛市立医院口腔科,山东青岛266003 [2]青岛市口腔医院,山东青岛266011

出　　处：《牙体牙髓牙周病学杂志》2006年第8期461-463,共3页Chinese Journal of Conservative Dentistry

摘　　要：目的研究对安氏Ⅲ类错病例应用同一种方法进行矫治而取得不同矫治效果的原因,以便更准确地对Ⅲ类错的治疗进行预后估计。方法选择在我院就诊的Ⅲ类错女性病人32例,用前方牵引与头帽颏兜联合治疗,根据治疗效果将样本分为有效组和无效组,对矫治前后错患者的头颅定位侧位片进行分析,分析两组病例在矫治前后颅面结构特征的不同。结果开始治疗阶段,在垂直向上无效组下面高、下面高与全面高之比、下颌平面角大于有效组。在水平向上SNA有效组小于无效组,SNA、SNB在两组中也有显著差异。通过对有效组和无效组从开始治疗(T1)至第一阶段治疗结束后(T2)的头影分析,有效组表现出更多下颌骨的移位。结论对于骨性的Ⅲ类错,在进行治疗时要分析其生长趋势,对长面型、面角高的病例要慎重,对于其治疗效果要有充分的预后估计。AIM ：To investigate the differences in the skeletal morphology between the effective and the ineffective groups treated with same method . METHODS：32 female eases with malocclusion class Ⅲ were chosen and treated by combined protraction and chin cup divided into two groups（ the effective and the ineffective group）according to the different treatment results. The eephalograms were taken at the beginning （T1） and after the treatment （T2） . Then the skeletal difference between the two groups was analyzed. RESULTS：At T1, the lower facial height inclination of mandibular plane and gonial angle were larger at the ineffective group. SNA was smaller in the effective group. At T2, the difference between facial height were increased. SNB was difference between two groups. From T1 - T2, the effective group express more madibullar anterior displacement. CONCLUSION：Those results indicated that the vertical dimention of the eraniofaeial skeletal are important for prediction in the treatment of class Ⅲ malocclusion.

关 键 词：安氏Ⅲ类错[牙合] 前方牵引与头帽颏兜矫治器 

分 类 号：R783.5[医药卫生—口腔医学]