镍钛拉簧及橡皮链远中移动尖牙的疗效观察  

Observation of treatment outcome of distal movement of cuspids using nickel titanium springs and elastic chains

作　　者：雷琼 陈燕 

机构地区：[1]成都市妇女儿童中心医院口腔科,四川成都610091

出　　处：《四川医学》2011年第12期1912-1914,共3页Sichuan Medical Journal

摘　　要：目的评价镍钛拉簧、橡皮链远中移动尖牙的临床疗效。方法随机选择拔除双侧第一双尖牙进行固定矫治的牙颌畸形患者31例,在同一牙弓的两侧分别以镍钛螺旋拉簧、橡皮链远中移动尖牙,牵引力值约为150g,对镍钛拉簧及橡皮链远中移动尖牙的疗效进行了比较;对上、下颌尖牙以及成人、青少年的尖牙移动效果进行了比较。结果镍钛螺旋拉簧远移尖牙的速度为1.20mm/月,橡皮链远中移动尖牙的速度为0.90mm/月,差异有统计学意义(P<0.05);上、下颌尖牙的远中移动速度差异有统计学意义(P<0.05);青少年、成年人尖牙的远中移动速度差异有统计学意义(P<0.05)。结论镍钛螺旋拉簧远移尖牙的速度明显快于橡皮链,上颌尖牙远中移动的速度快于下颌尖牙,青少年尖牙远中移动的速度快于成年人。Objective To evaluate the clinical treatment outcome of distal movement of cuspids using nickel titanium springs and elastic chains. Methods 31 cases with orthognatic malocclusions needing fixed orthodontic treatment with extractions of fiat bicuspids were randomly selected to enter the study. They received orthodontic treatment by using nickel titanium coil spings on one side and elastic chains on the other side within the same arch to move the cuspids distally. The pulling force utilized was about 150 grams. The treatment outcome of both techniques were compared. In addition, comparisons were made between maxillary and mandibular cuspids as well as between adults and adolescents in the movement of cuspids. Results Nickel titanium coil springs moved cuspids distally at the pace of 1.20mm/month while elastic chains moved euspids at the pace of 0. 90ram/ month. The difference is of statistic significance （ P 〈 0. 05 ）. The difference in the speed of movement between maxillary and mandibular euspids is also of statistic significance （ P 〈 0. 05 ）. Further more, the difference in the speed of movement of the euspids between adults and adolescents is of statistic significance （ P 〈 0. 05 ）. Conclusion Nickel titanium coil springs moved cuspids distally at a much fast speed than elastic chains ; maxillary cuspids moved faster than mandibular cuspids ; cuspids of adolescents moved faster than cuspids of adults.

关 键 词：正畸牙移动 正畸力 镍钛螺旋拉簧 橡皮链 

分 类 号：R783.5[医药卫生—口腔医学]