中国实用口腔科杂志2017，Vol.10Issue(11)：674-678,5.DOI:10.19538/j.kq.2017.11.008
PAR指数与头影测量对拔除下颌第一磨牙矫治效果临床评价
Evaluation of orthodontic treatment outcome in patients undergoing extraction of mandibular first molar with PAR index and cephalometrics
王庆琳 1何永坚 1周少云 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口腔正畸科,广东广州510260
- 折叠
摘要
Abstract
Objective To access the clinical effect of orthodontic treatment for patients undergoing extraction of mandibular first molar.Methods Nineteen patients (three male and sixteen female)undergoing extraction of mandibular first molar because of caries or periapical disease were collected,who were treated in the Second Hospital Affiliated to Guangzhou Medical University from 2007 to 2016.All the patients were treated with orthodontic space closure using MBT preadjusted appliance and sliding mechanics and class Ⅱ or class Ⅲ elastics.Cephalometric films and casts that were taken before and after orthodontic treatment were measured and analysed.Results The average treatment time was (33.47 ±7.93) months.Thirteen cases (68.42％) were evaluated as greatly improved,six cases (31.58％) as improved,and no cases were evaluated as worse or no difference after treatment;the difference in weighted PAR score and each of the PAR score were statistically significant (P ＜ 0.05).There were significant changes in U 1-NA,U 1-NA and U 1-SN (P ＜ 0.05),but not in the rest of the values (P ＞ 0.05).Extraction spaces of mandibular first molars were closed.Good occlusal relationships and soft tissue profiles were achieved in all cases.Conclusion The first molar extraction could achieve satisfactory results under strict planning,appropriate control and careful clinical operation.关键词
PAR指数/头影测量/下颌第一磨牙拔除/疗效评价Key words
PAR index/cephalometrics/mandibular first molar extraction/effect evaluation分类
医药卫生引用本文复制引用
王庆琳,何永坚,周少云,马明玉,李荣霞..PAR指数与头影测量对拔除下颌第一磨牙矫治效果临床评价[J].中国实用口腔科杂志,2017,10(11):674-678,5.
