口腔疾病防治2017，Vol.25Issue(12)：788-793,6.DOI:10.12016/j.issn.2096-1456.2017.12.008
PAR指数及头影测量评价拔除下颌第一磨牙的矫治效果
Evaluation of orthodontic treatment in patients with extraction of mandible first molar using PAR index and cephalometrics
王庆琳 1周少云 1何永坚 1马明玉 1李荣霞1
作者信息
- 1. 广州医科大学附属第二医院正畸科,广东广州 510260
- 折叠
摘要
Abstract
Objective To access the clinical effect of orthodontic treatment in patients with extraction of mandible first molar.Methods Nineteen patients (three male and sixteen female) with extraction of mandible first molar because of caries,periapical disease were collected as experimental group.The age was 21.37 ± 5.07.Nineteen patients (seven male and twelve female) with extraction of four premolar as control group,The age was 20.42 ± 4.23.All the patients were treated with orthodontic space closure using MBT preadjusted appliance and sliding mechanics PAR index and cephalomertics that were compared before and after orthodontic treatment.Results The two groups' reduction in weighted PAR score and each of the PAR score differences were statistically significant (P ＜ 0.01).There was no significant difference between the two groups after treatment in PAR.There were significant changes in U1-NA (o)、U1-NA (mm) 、U1-SN(°),but not in the rest of the value in experimental group (P ＜ 0.01).The L1-NB(°)、L1-NB (ram) was significant difference before and after treatment.Extraction spaces of mandible first molars were closed (P ＜ 0.01);Good occlusal relationships and soft tissue profiles were achieved in all cases.Conclusion If the mandibular first molars have serious caries or periapical lesions,removal of mandibular first molar,making full use of the mandibular third molar and keeping health premolars for orthodontic treatment could receive satisfactory results.关键词
PAR指数/头影测量/下颌第一磨牙/拔除/疗效评价/正畸治疗Key words
PAR index/Cephalometrics/Mandible first molar/Extraction/Effect evaluation/Orthodontic treatment分类
医药卫生引用本文复制引用
王庆琳,周少云,何永坚,马明玉,李荣霞..PAR指数及头影测量评价拔除下颌第一磨牙的矫治效果[J].口腔疾病防治,2017,25(12):788-793,6.
