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两种方法矫治替牙期前牙反的临床研究
引用本文:杨建玲,陈新,张素丽.两种方法矫治替牙期前牙反的临床研究[J].中国现代医生,2012,50(24):147-148,150.
作者姓名:杨建玲  陈新  张素丽
作者单位:河南省濮阳市中医医院口腔科,河南濮阳,457000
基金项目:河南省濮阳市2010年科技发展计划
摘    要:目的通过前方牵引器和2X4固定矫治器治疗前牙反的回顾性分析,探讨两种治疗方法的作用、机制及效果,为临床治疗提供参考。方法 71例采用前方牵引矫治器治疗,71例采用2X4固定矫治器治疗;两组治疗前后拍摄头颅侧位片,由同一医师进行描绘定点及测量结果,并比较两组治疗前后软硬组织的变化。结果前牙反解除,建立前牙正常的覆覆盖关系;磨牙基本中性关系;患者的凹面型有明显的改善。前方牵引组患者治疗后的SNA角、ANB角、U1-SN角、S-N’-Sn角、Sn-N-B’角差值与2X4固定矫治组相比,两者有差异(P﹤0.05)。结论前牙反最佳矫治年龄为替牙早期,矫治方法据致病机制的不同进行选择,对于牙源性、功能性的前牙反,宜选择2X4固定矫治治疗,对于上颌发育不足的前牙反,宜选择前方牵引进行矫形治疗。

关 键 词:前方牵引器  2X4固定矫治器  前牙反  替牙期

Clinical studies of two methods in correction of the mixed dentition crossbite occlusion
Authors:YANG Jianling  CHEN Xin  ZHANG Suli
Institution:YA NG Jianling CHEN Xin ZHA NG Suli Department of Stomatology, the Tranditional Chinese Medicine Hospital of Puyang City in Henan Province,Puyang 457000, china
Abstract:Objective To discuss the effect, mechanism and result of applying maxillary protraction and 2X4 fixed appliance through the retrospective study on the treatment of anterior crossbite in order to provide a reference to clinical treatment. Methods We treated 71 patients with maxillary protraction while the other 71 patients were taken care of with fixed appli ance. Cephalometric radiographs for both groups were taken before and after treatment and all cephalograms were measured by a particular physician to give out the results. Then the changes of soft and hard tissue as a result of the treatment were compared. Results The anterior crossbite were corrected and the normal overbite relationship were established. Molar tooth were generally pointed to neutral.There are significant improvements in patients with concave face-line. For patient treated with maxillary protraction, their SNA angle,ANB angle,U~-SNangle,S-Ni-Sn angle as well as Sn-N-Bj angle before and af ter treatment showed considerably bigger difference (P 〈 0.05) than those who treated with 2X4 fixed appliance. Conclu sion The best opportunity to correct anterior crossbite were at early mixed dentition.The method chose should be based on the pathogenic mechanism. For odontogentic and functional anterior crossbite it is optimum to be treated with 2X4 fixed ap pliance;but for anterior crossbite caused by maxillary maldevelopment, maxillary protraction should be a better option.
Keywords:Maxillary protraction  2X4 fixed appliance  Anterior crossbite  Mixed dentition
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