应用磁体牵拉残根的临床疗效观察

Orthodontic extrusion of residual root with magnet

目的评价应用磁体牵拉残根的临床疗效及应用价值。方法对8例需行修复治疗的残根应用磁体牵拉。通过对治疗前后患者模型的测量,临床牙周检查及数字化X线牙片分析,评价应用磁体牵拉残根的临床效果。结果 8例患者经过平均5.1周的治疗,均取得了良好的治疗效果。治疗前后模型分析显示,最大牵拉量为4.9mm,最小牵拉量为3.5mm。治疗前后牙周探诊深度,牙根长度均无明显差异(P>0.05)。结论与传统正畸方法相比,应用磁体牵拉残根操作简便,不影响美观,节省椅旁时间,临床效果好。牵拉未引起明显的牙周及牙根损害,值得在临床推广。

Objective To evaluate the clinical effect of extrusion of residual root with magnet.Methods Residual roots in eight patients were selected and extruded with magnet.The clinical effect of extrusion was evaluated by measuring the models,clinical periodontal examination and X-ray before and after treatment.The data were analyzed with SAS software.Results The treatment time was 5.1 weeks on average.All residual roots were successfully extruded.The maximum extrusion amount was between 4.9mm and 3.5mm.The periodontal health and root length were not significantly differnt before and after treatment（P0.05）.Conclusion The procedure of residual root extrusion with magnet is simple and convenient with good clinical results.