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1、改良式口内上颌支架式前牵引器研制及临床应用[摘要]目的:研制改良式口内上颌支架式前牵引器以简化矫治器结构,扩大矫治范围,提高临床疗效。方法:选10例替牙期、恒牙早期骨性III类患者配戴改良式口内支架式前牵引矫治器和Delaire面具,用FRIII矫治器保持。将治疗前后X线片用Steiner和Tweed分析测量,再用Spssl3.0软件统计进行配对t检验。结果:10例骨性III类错牙合配戴改良式口内上颌支架式前牵引5〜12个月,有7项具有统计学意义,牙列呈正常牙合,面型从凹面型矫形为直面型或趋向正常型改变。结论:改良式
2、口内上颌支架式前牵引器,可维持牙弓宽度,压低磨牙,使牙合、颌、面三维结构呈正常型改变,用FRIII矫治器保持,效果显著,且矫治器结构简单、易制作、廉价,配戴清洁舒适、无口臭,可推广应用。[关键词]改良式口内上颌支架式前牵引器;骨性III类错牙合[中图分类号1R783.5[文献标识码]A[文章编号]1008-6455(2010)03-0374-04ThedevelopmentandclinicalapplicationofmodifiedintraoralframepremaxillarytractorLIXiang-
3、lin,GUANLi-min,Z0UMin,MAOXin-xia(DepartmentofOrthodontics,StomatologyHospitalofXi,anJiaotongUniversity,Xi,an710004,Shaanxi,China)Abstract:ObjectiveWestudyandsimplifythestructureofintraoralframepremaxillarytractortoenlargethetreatmentrange,andimprovetheclinicale
4、fficacy.Methods10caseswithmixeddentitionorearlypermanentdentalofskeletaiClassIII.ThemodifiedintraoralframepremaxillarytractorandDelairefacemaskwereapplied,andfollowedbyFRIIIretention.X-raycephalometrieswerestudiedbySteinerandTweedanalysisbeforeandafterthetreatm
5、ent,andthedatawereanalyzedwithSPSS13.0.ResultsAfterthe5〜12mothstreatment,statisticalsignificancecanbefoundin7index.Thedentallayinnormalocclusion,thefacialprofiletendtochangefromconcavitytonormal,andnorelapseafter6mthretentionwithFRIII.ConclusionThemodifiedintra
6、oralframepremaxillarytractorcanhelptomaintainthewidthofdentalarch,molarintrusion,andstimulatethechangeofocclusion,jaws,andfacialstructuretowardsnormaltype.ThetreatmentwasfollowedbyFRIIIretention,andtheeffectsisobvious・Theappliancearewithsimplestrueture,andeasyt
7、odesign,lowprice;it,salsoeasytobecleanedandcomfortable,nofetororis,andisworthyofbeingexpanded.Keywords:modifiedintraoralframepremaxillarytractor;skeletalClassIII骨性III类错牙合畸形,对患者面容、心理健康影响较大,临床就诊率高,早期矫治手法主要为上颌前牵引矫治器、头帽硕兜矫治器和III型功能性矫治器。其中0ppenheinl944年首先使用的上颌前牵引器治疗
8、骨性III类错牙合,效果显著,已广泛应用于临床[1]。为了弥补以往粘结式牙合垫前牵引矫治器口臭、不易清洁、难以控制下面高和固定支架前牵引矫治器腭侧支抗不足[2]、焊点多等不足。笔者2006年设计研制改良式口内上颌支架式前牵引器应用于临床,疗效显著,并配戴FRIII矫治器保持6个月,无1例复发,现报道如下。1材料和方法1.1病例资料:选2006〜