青少年先天缺牙正畸治疗前后PAR指数分析

目的采用PAR指数评价青少年先天缺牙患者正畸治疗的效果。方法选择20例先天缺牙的青少年错患者,采用PAR指数对矫治前后的牙齿排列、磨牙关系、覆盖、覆及中线情况进行评估和比较。结果先天缺牙青少年患者正畸治疗后的PAR总分和加权总分均小于治疗前,正畸治疗前后的PAR指数除中线外,其他各项分值差异均有统计学意义(P<0.01)。治疗前后PAR总分值减少(14.25±7.91)分,减少百分率为(80.90±11.09)%;权重PAR总分值减少(15.45±8.16)分,减少百分率为(75.34±18.41)%。结论PAR指数能较好地反映青少年先天性缺牙患者正畸治疗前后特征的改善程度,但还存在一定缺陷。在临床应用时还需进一步改进。

PAR Index of Adolescents with Congenital Missing Teeth Pre- and Post-orthodontic Treatment

OBJECTIVE: To assess the outcome of orthodontic treatment for adolescents with congenital missing teeth using the PAR (Peer Assessment Ration) index. METHODS: The PAR index was adopted to evaluate and compare the teeth arrangement, molar occlusion, overjet, overbite and centerline condition of 20 adolescents with congenital missing teeth before and after orthodontic treatments. RESULTS: The initial PAR scores and weighted PAR total scores decreased significantly after Orthodontic treatments (P < 0.01), except for the centerline. The PAR total scores decreased by 14.25 +/- 7.91 (80.90% +/- 11.09%). The weighted PAR total scores decreased by 15.45 +/- 8.16 (75.34% +/- 18.41%). CONCLUSION: PAR index can well reflect the improvement of occlusion characters by orthodontic treatment for adolescents with congenital missing teeth. But further improvement is needed for clinical application.