CAJ | 학술논문

目的探讨单侧拔除第二双尖牙矫治上颌中度牙列拥挤的适应证及疗效.方法选择侧貌良好的上颌中度牙列拥挤病例12例,平均年龄19岁,拥挤度在4—8mm,拥挤集中于牙弓一侧,上颌中线偏斜≤2.5mm,下颌牙列拥挤度≤4mm.所有病例均采用上颌单侧拔除第二双尖牙进行治疗.结果所有患者经过平均16个月治疗,尖牙为I类关系,磨牙一侧中性关系,一侧完全远中,建立良好的咬合关系.上颌牙列中线偏斜小于1mm,侧貌良好.结论上颌单侧拔除第二双尖牙利于矫治拥挤集中于牙弓一侧的上颌中度牙列拥挤,在中线纠正及牙弓形态控制方面效果优于拔除第一双尖牙治疗.
목적 탐토단측발제제이쌍첨아교치상합중도아렬옹제적괄응증급료효.방법 선택측모량호적상합중도아렬옹제병례12례,평균년령19세,옹제도재4—8mm,옹제집중우아궁일측,상합중선편사≤2.5mm,하합아렬옹제도≤4mm.소유병례균채용상합단측발제제이쌍첨아진행치료.결과 소유환자경과평균16개월치료,첨아위I류관계,마아일측중성관계,일측완전원중,건립량호적교합관계.상합아렬중선편사소우1mm,측모량호.결론 상합단측발제제이쌍첨아리우교치옹제집중우아궁일측적상합중도아렬옹제,재중선규정급아궁형태공제방면효과우우발제제일쌍첨아치료.
O bjectiveTo investigate the effects of unilateral extraction of the upper second premolar in treatment of moderate crowding cases . M ethods12 cases with harmonious profile and moderate crowding in the upper arch w hich limited in one quadrant were selected ,average 19 years .The upper arch discrepancy were between 5 -8mm ,the upper midline deviated less than 2 .5mm ,and the lower arch discrepancy were no more than 4mm .All cases were treated by unilateral extraction of the upper second premolar with preadjusted appliance .ResultsAll cases were treated successfully in average 16 months .Crowding were resolved completely ,midline deviation were reduced within 1mm ,class I canine relationship were achieved on both sides ,class I molar relationship were maintained on the nonextraction side and class Ⅱ on the ex‐traction side .No significant asymmetry were found between the dental arches .Profiles remained unchanged .Conclusions Unilateral extrac‐tion of the upper second premolar can be successful in the treatment of unilateral moderate crowding cases without aggravating midline devia‐tion or arch form asymmetry .