正畸术后不同保持方式保持效果的对比研究

刘浩; 杨丽; 冯妍; 周黎黎

doi:10.3969/j.issn.2096-3882.2021.010.014

正畸术后不同保持方式保持效果的对比研究

Comparative study on the effect of different maintenance methods after orthodontic treatment

摘要

摘要: 目的：通过比较不同保持器和保持方式对正畸患者治疗后的保持效果，为预防正畸术后复发提供理论依据。方法：收集2019年1月到2019年9月非拔牙固定正畸治疗结束患者60例，随机分为四组，A组患者使用Hawley保持器，B组患者使用透明压膜保持器，C组患者使用固定舌侧保持器结合Hawley保持器夜间保持，D组患者使用固定舌侧保持器结合透明压膜保持器夜间保持。每位患者在正畸治疗结束时和保持1年后进行数字化口内扫描，打印3D模型。分别在模型上测量保持前后的PAR指数，评价保持情况。结果：组间比较：保持器戴用1年后，四组患者的PAR指数各指标差异无统计学意义（P>0.05）。组内比较：A组患者保持1年后的PAR指数总分值高于保持前，差异有统计学意义（P<0.05），C组患者保持1年后的不齐和PAR总分值均较保持前增加，差异有统计学意义（P<0.05），其余各指标无差异。结论：对于非拔牙矫治的患者，推荐使用透明压膜保持器来维持正畸治疗效果。

Abstract: ob＜x＞jective: To compare the effect of different retainers and ways on orthodontic patients after treatment, so as to provide basis for the prevention of recurrence.Methods: 60 patients with non extraction fixed orthodontic treatment from January 2019 to September 2019 were randomly divided into four groups, group A: Hawley retainer, group B: vacuum formed retainer, group C: fixed lingual retainer combined with Hawley retainer at night, and group D : fixed lingual retainer combined with vacuum formed retainer at night. PAR indexes before and after maintenance were measured on the model to evaluate the effect of maintenance.Results: There was no significant difference in PAR index among the four groups after wearing retainer for one year (P > 0.05).The total score of PAR index in group A and group C was increased after one year (P < 0.05).Conclusion: For non extraction orthodontic patients, vacuum formed retainer is recommended to maintain orthodontic treatment effect

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