CAJ | 학술논문

目的探讨预置支点在矫治上颌水平阻生尖牙的作用.方法水平埋伏阻生上颌尖牙5例,均位于邻牙根方.用直丝弓矫治器进行间隙预备,外科开窗暴露埋伏尖牙的牙冠,将预置支点置于牙颈部,进行正畸牵引,曲面断层片观察邻牙牙根吸收情况.结果水平阻生尖牙以预置支点为转动中心而移动至正常位置,牙髓和牙周情况良好,邻牙牙根无吸收现象.结论预置支点水平阻生上颌尖牙的转动中心,对正畸临床治疗有指导意义.
목적 탐토예치지점재교치상합수평조생첨아적작용.방법 수평매복조생상합첨아5례,균위우린아근방.용직사궁교치기진행간극예비,외과개창폭로매복첨아적아관,장예치지점치우아경부,진행정기견인,곡면단층편관찰린아아근흡수정황.결과 수평조생첨아이예치지점위전동중심이이동지정상위치,아수화아주정황량호,린아아근무흡수현상.결론 예치지점수평조생상합첨아적전동중심,대정기림상치료유지도의의.
Objective To explore the treatment of horizontally impacted maxillary canines with artificial fulcrum. Methods Five patients with horizontally impacted maxillary canines were involved. The space was regained by using straight wire appliance. After surgical exposure, artificial fulcrums were placed on dental cervix of the impacted canines and traction was applied to these impacted canines. Panoramic x-ray was used to evaluate the roots resorption. Results Impacted maxillary canines of the 5 patients were corrected to normal position. The tooth pulp and periodontal tissue were healthy. There was no root resorption of adjacent teeth. Conclusions The artificial fulcrum changed the center of rotation in the treatment of horizontally impacted upper canine.