改良式口内上颌支架式前牵引器的研制及临床应用

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1、改良式口内上颌支架式前牵引器的研制及临床应用改良式口内上颌支架式前牵引器的研制及临床应用［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Delairetf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

2、型矫形为直面型或趋向正常型改变。结论:改良式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,口矫治器结构简单、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)03-0374-04Thedevelopmentandclinicalapplicationofmodifiedintraoralframepremaxi

3、llarytractorLIXiang-lin,GUANLi-min,ZOUMin,MAOXin-xia(DepartmentofOrthodontics,StomatologyHospitalofXi'anJiaotongUniversity,Xi'an710004,Shaanxi,China)Abstract:0bjectiveWestudyandsimplifythestructureofintraoralframepremaxillarytractortoenlargethetreatmentrange,andi

4、mprovetheclinicalefficacy・Methods10caseswithmixeddentitionorearlypermanentdentaiofskeletalClassIII.ThemodifiedintraoralframepremaxillarytractorandDelairefacemaskwereapplied,andfollowedbyFRIIIretention.X-raycephalometrieswerestudiedbySteinerandTweedanalysisbeforea

5、ndafterthetreatment,andthedatawereanalyzedwithSPSS13.0.ResultsAfterthe5〜12mothstreatment,statisticalsignificancecanbefoundin7index・Thedentallayinnormalocclusion,thefacialprofiletendtochangefromconcavitytonormal,andnorelapseafter6mthretentionwithFRIII.ConclusionTh

6、emodifiedintraoralframepremaxillarytractorcanhelptomaintainthewidthofdentalarch,molarintrusion,andstimulatethechangeofocclusion,jaws,andfacialstructuretowardsnormaltype.ThetreatmentwasfollowedbyFRIIIretention,andtheeffectsisobvious.Theappliancearewithsimplestruct

7、ure,andeasytodesign,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、头帽皴兜矫治器和III型功能性矫治器。其中0ppenheinl944年首先使

8、用的上颌前牵引器治疗骨性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