You Position: Home > Paper
Preliminary investigation of lower second molar extraction in correction of severe skeletal class Ⅲ malocclusion
( views:313, downloads:160 )
- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF STOMATOLOGY
- Issue:
- 9
- DOI:
- 10.3760/j.issn:1002-0098.2006.09.008
- Key Word:
- 正畸学,矫正;错(牙合),安氏Ⅲ类;拔牙
Abstract： 目的 研究拔除-7-|7结合固定矫正技术矫治恒牙期严重骨性Ⅲ类错(牙合)畸形的疗效.方法 14例恒牙期严重骨性Ⅲ类错(牙合)畸形患者,男性4例,女性10例.年龄12.0～17.1岁,平均(13.3±0.8)岁.全部患者均被视为手术适应证,但患者均拒绝接受手术治疗.故采用拔除7 7结合固定矫治器进行非手术矫治.治疗前后头颅侧位片以常规头影方法及Pancherz头影测量方法进行分析.结果 与矫治前相比,矫治后下颌中切牙角减少11.7°,差异有统计学意义(P＜0.001).上下唇凸点至SnPg'距离的差值,由矫治前的负值转变为矫治后的正值,差异有统计学意义(P＜0.001).结论 减数-7|7结合固定矫正技术可成功矫治恒牙期严重骨性Ⅲ类错(牙合)畸形,并使患者软组织侧貌发生显著改变.
- [1]林久祥,谷岩.18例12~20岁严重骨性Ⅲ类牙颌畸形非手术正畸治疗的初步研究[J].2004,(2).
- [2]J L, Ackerman,W R, Proffit.Soft tissue limitations in orthodontics: treatment planning guidelines.[J].1997,67.
- [3]P C, Kesling,R T, Rocke,C K, Kesling.Treatment with Tip-Edge brackets and differential tooth movement.[J].1991,99(5).
- [4]P R, Begg,P C, Kesling.The differential force method of orthodontic treatment.[J].1977,71(1).
- [5]Uner O.,Yuksel S.,Ucuncu N..Long-term evaluation after chincap treatment[J].1995.
- [6]J B, Pike,R A, Sundheim.Skeletal and dental responses to orthognathic surgical treatment.[J].1997,67.
- [7]K K, Lew,W C, Foong.Horizontal skeletal typing in an ethnic Chinese population with true Class III malocclusions.[J].1993,20(1).