拔除第二磨牙推磨牙远移矫治安氏Ⅱ类错牙合10例报道  

Treatment of Class Ⅱ malocclusion by distalization of the upper first molars following extraction of the second molars

作　　者：王慧娟[1] 杨海燕[1] 江毅[1] 王涛[1] 

机构地区：[1]解放军171医院口腔科,江西九江332000

出　　处：《临床口腔医学杂志》2014年第8期485-487,共3页Journal of Clinical Stomatology

摘　　要：目的：拔除上颌第二磨牙后远移第一磨牙,观察其远移的效果和第三磨牙自行调整的情况.方法：选择牙性安氏Ⅱ类错（殆）,上颌牙列中度拥挤病例10例,下颌轻度拥挤或大体正常,年龄16～20岁.拔除上颌第二磨牙后l周开始用Ni-Ti推簧推第一磨牙远移,同时观察第三磨牙自行向第二磨牙位置迁移的情况.所有病例均采用国产MBT直丝弓矫治器.结果：10例安氏Ⅱ类错（殆）均矫正为安氏Ⅰ类咬合关系,上颌牙列拥挤解除,第一磨牙远移显著.8例患者上颌第三磨牙自行迁移至第二磨牙的位置并建立正常咬合关系.2例后期用矫治器使其矫治至正常位置.结论：选择合适的适应症和年龄,拔除上颌第二磨牙后,第一磨牙均能远移至预期位置,第三磨牙绝大多数能自行迁移至理想的位置.临床显示此方法是矫治安氏牙性Ⅱ类错（殆）比较有效的方法.Objective：To observe the effects of the upper first molar movement and the third molars drifting forward automatically following the second molar extraction for correct Class Ⅱ malocclusions.Method：10 of cases with Class Ⅱ malocclusions of maxillary dentition with moderately crowding were chosen for this clinical study.The mean age is of 18 years and 6 months （ranging from 16 years 2 months to 20 years 5 months）.MBT straight wire technique was used for all cases.Distances of upper the first molar movement and the third molars drifting automatically were measured in before and the after.Result：Class Ⅱ malocclusions were completely corrected and become the Class Ⅰ relationship.At the end of therapy,8 cases of the third molars were moved automatically into the second molar’s positions,2 cases of the third molars were needed by orthodontic treatment.Conclusion：Class Ⅱ malocclusions in all cases were correated for Class Ⅰ relationship by moving the first molars following extraction the second molars,at the same time the third molars can drift into the second molar’s positions in majority cases.

关 键 词：Ⅱ类错(殆) 磨牙远移 MBT直丝弓矫治技术 

分 类 号：R783.5[医药卫生—口腔医学]