拔除龋坏第一磨牙矫治错畸形20例临床分析  

First molar extraction in malocclusion:An analysis of 20 consecutive cases

作　　者：田玉楼[1] 秦科[1] 赵阳[1] 张媛媛[1] 

机构地区：[1]中国医科大学口腔医学院正畸科,辽宁沈阳110002

出　　处：《上海口腔医学》2009年第4期375-379,共5页Shanghai Journal of Stomatology

摘　　要：目的:探讨拔除龋坏第一磨牙进行正畸治疗的可行性和矫治效果。方法:收集20例拔除第一磨牙矫治错畸形病例,其第一恒磨牙存在龋坏所致残冠、残根、根尖周炎等情况。男3例,女17例,年龄13.5～22岁,平均年龄15.6岁。20例中,拔除2颗下颌第一磨牙7例,拔除单侧下颌第一磨牙5例,上、下4颗第一磨牙均拔除者2例,拔除上、下颌各1颗第一磨牙2例,拔除1颗上颌第一磨牙4例。全部病例均采用0.018"标准方丝弓或0.018"直丝弓矫治技术。常规粘接托槽,放置合适弓丝,排齐整平牙列,滑动法关闭拔牙间隙,调整咬合关系。结果:20例均达到良好矫治效果,上、下牙排列整齐,前牙覆覆盖正常,上、下中线对齐,第一磨牙间隙完全关闭,后牙咬合关系良好,达到了改善咬合功能和美观的目的。结论:拔除龋坏第一磨牙进行错畸形矫治,既能保留更多的健康牙,又能达到良好的矫治效果,改善咬合功能和美观,为可行的临床治疗方案。PURPOSE：To study the feasibility and orthodontic effect of decayed first molar extraction in malocclusion.METHODS：20 cases with first molar extraction in malocclusion were chosen for this study.There were 3 males and 17 females,aging from 13.5 to 22 years with an average age of 15.6 years.7 cases were treated with extraction of two lower first molars,5 cases with extraction of one lower first molar,2 cases with extraction of four first molars,2 cases with extraction of one lower first molar and upper first molar,4 cases with extraction of one upper first molar.All patients were treated with 0.018＂ edgewise appliance or 0.018＂ straightwire appliance.The procedure included bonding brackets,putting arch wire,leveling dentition,closing extraction space and adjusting occlusal relationships routinely.RESULTS：When treatment finished,all the 20 cases gained satisfactory results,all the teeth lined up in order,anterior teeth gained correct overbite and overjet,midline was alignment,molar space was completely closed,occlusion was perfect,the occlusion and facial profile were improved.CONCLUSION：The treatment of decayed first molar extraction in malocclusion could retain more healthy teeth,gain satisfactory orthodontic results,improve the occlusion.

关 键 词：错[牙合]畸形 第一磨牙 拔牙矫治 

分 类 号：R783.5[医药卫生—口腔医学]