临界病例拔牙与否的正畸治疗效果评估
首发时间:2019-05-21
摘要:目的:以拔牙与非拔牙临界病例为研究对象,通过应用PAR指数评估其治疗效果,意在为临界病例正畸治疗拔牙与否提供参考,并为PAR指数的应用提供一些新的思路。方法:筛选2017年9月至2018年9月在兰州大学口腔医院正畸科治疗结束的拔牙与非拔牙临界病例患者40名(拔牙与非拔牙治疗各20名)。应用PAR指数评估患者正畸治疗效果。结果:1.临界病例治疗前后在牙齿错位、覆盖、覆牙合、加权PAR指数总分值等方面存在显著差异。2.拔牙组与非拔牙组在矫治效果等级评价上无统计学差异(χ2=2.978;P值=0.317>0.05)。3.拔牙组与非拔牙组在加权PAR指数总分值、加权PAR指数总分差值及加权PAR指数总分值减少百分率方面存在显著差异。结论:1.临界病例拔牙组与非拔牙组在治疗前错牙合畸形严重程度并无明显差异,前牙段牙齿错位可能是临界病例正畸治疗拔牙与否的影响因素之一。2.临界病例拔牙治疗与非拔牙治疗均能达到矫治错牙合畸形的目的,但拔牙矫治更有利于牙、牙合关系的调整。
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Evaluation of Orthodontic Therapeutic Effect in Borderline Cases with or without Teeth Extraction
Abstract:Objective: Taking the borderline cases of extraction and non-extraction as the research object, the application of PAR index to evaluate the therapeutic effect is intended to provide reference for the borderline orthodontic treatment of tooth extraction, and provide some new ideas for the application of PAR index. Methods: Forty borderline cases of extraction and non-extraction (20 for extraction and 20 for non-extraction) were screened from September 2017 to September 2018 at the end of orthodontic treatment in Lanzhou University Stomatological Hospital. PAR index was used to evaluate the effect of orthodontic treatment. Results: 1.There were significant differences in tooth dislocation, overjet,overbite, and weighted PAR index scores before and after treatment in borderlinel cases. 2.There was no significant difference in the evaluation of the effect level between the extraction group and the non-extraction group (χ2=2.978; P value=0.317>0.05). 3.There were significant differences in the weighted PAR index total score, the weighted PAR index total score difference, and the weighted PAR index total score reduction percentage between the extraction group and the non-extraction group.Conclusions: 1. There is no significant difference in the severity of malocclusion between the extraction group and the non-extraction group. The dislocation of the anterior teeth may be one of the factors influencing the extraction of orthodontic treatment in borderline cases. 2. Both extraction and non-extraction in borderline cases can achieve the purpose of correcting malocclusion, but extraction is more conducive to adjusting the relationship between teeth and occlusion.
Keywords: borderline case extraction or not orthodontic treatment therapeutic effect
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