CAJ | 학술논문

目的：探讨微种植体矫治第二恒磨牙正锁牙合的疗效。方法选择第二磨牙正锁牙合病例9例，男7例，女2例，年龄18～32岁，平均22．5岁。在锁牙合牙的颊侧及上颌腭侧植入微种植体，链状皮圈牵引竖直、压低倾斜的第二磨牙。对正锁牙合磨牙治疗前后的CBCT 进行测量、分析。结果微种植体牵引矫治正锁牙合平均疗程4个月。三维测量结果：U7j －矢状面减小、L7j －矢状面增加，P ＜0．05，有显著差异，表明患侧正锁牙合上下磨牙的牙弓宽度恢复；U7－ SN 增加，L7－ SN 减小，P ＜0．05，有明显差异，说明正锁牙合磨牙的牙轴恢复正常。结论微种植体用于纠正磨牙正锁牙合，针对锁牙合发生的机制进行矫治，矫治锁牙合牙颊舌向异常的同时纠正了高度异常，疗程短、疗效好。
목적：탐토미충식체교치제이항마아정쇄아합적료효。방법선택제이마아정쇄아합병례9례，남7례，녀2례，년령18～32세，평균22．5세。재쇄아합아적협측급상합악측식입미충식체，련상피권견인수직、압저경사적제이마아。대정쇄아합마아치료전후적CBCT 진행측량、분석。결과미충식체견인교치정쇄아합평균료정4개월。삼유측량결과：U7j －시상면감소、L7j －시상면증가，P ＜0．05，유현저차이，표명환측정쇄아합상하마아적아궁관도회복；U7－ SN 증가，L7－ SN 감소，P ＜0．05，유명현차이，설명정쇄아합마아적아축회복정상。결론미충식체용우규정마아정쇄아합，침대쇄아합발생적궤제진행교치，교치쇄아합아협설향이상적동시규정료고도이상，료정단、료효호。
Objective To evaluate the efficiency of micro-implant anchorage (MIA)for the treatment of scissors bite on second mo-lars. Methods Nine patients (7 males and 2 females with a mean age of 22. 5 years old)of scissors bite on second molars were trea-ted with MIA. CBCT were used to measure and analyze the Dicom data before and after treatment. Results With MIA,the scissors bite on second molars were corrected for a mean course of 4 months. U7j-the sagittal plane distance decreased significantly,and L7j-the sag-ittal plane distance increased significantly (P < 0. 05),suggesting the restoration of dental arch width of molars;U7-SN increased sig-nificantly,and L7-SN decreased significantly (P < 0. 05),suggesting that the molar′s axis was restored to normal level. Conclusions MIA could be used as an efficient method to correct scissors bite on second molars;both lock tooth buccal lingual and height abnormali-ties could be corrected. The course of treatment was short and the efficiency was good.