成人双颌前突错畸形患者拔牙正畸治疗后颅面软硬组织的变化_林铭

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1、424中华口腔医学研究杂志（电子版）2009年8月第3卷第4期ChinJStomatolRes（ElectronicEdition）,August2009,Vol．3,No．4·临床研究·成人双颌前突错畸形患者拔牙正畸治疗后颅面软硬组织的变化林铭王大为【摘要】目的探讨双颌前突错畸形成人患者拔牙矫治后软硬组织的变化。方法选取16例双颌前突错畸形成人患者，均于拔牙后应用直丝弓或方丝弓技术进行矫治，并做治疗前后X线头颅侧位定位片测量，以分析治疗前后软硬组织的变化。结果（1）上下颌骨间关系无明显变化［SNA、SNB、ANB变化无统计学意义（P>0.

2、05）］；（2）L1-MP、U1-L1、U1-NA、L1-NB前后差异均有统计学意义﹙P＜0.01﹚，上下前牙突度和倾斜度明显减小；（3）颏厚（Pos-Po）、鼻唇角（Cm-Sn-Ls）、面凸角（N′-Sn-Pg′）、上唇厚（UL-UI）、下唇厚（LL-LI）、上下唇角（A′UL-B′LL）治疗后显著增大，鼻、唇、颏的协调关系得以明显改善。结论双颌前突错畸形成人患者拔牙矫正后，切牙后移可以改善双颌前突侧貌和唇的闭合功能，但对骨骼作用不明显。【关键词】双颌前突；错畸形；正畸治疗；拔牙Soft-tissueandhard-tissueprofi

3、lechangesfollowingorthodontictreatmentofbimaxillaryprotrusioninadultswithteethextractionLINMing，WANGDa-wei.DepartmentofStomatology，theFirstPeople′sHospitalofFoshan，Foshan528000，ChinaCorrespondingauthor：LINMing，Email：linming@fsyyy.com【Abstract】ObjectiveToinvestigatethechang

4、esofsoftandhard-tissueprofilefollowingorthodontictreatmentofbimaxillaryprotrusioninadultswithteethextraction.Methods16adultbimaxillaryprotrusioncaseswereselectedtobetreatedwithstraightwiretechniqueconsistingofteethextraction.Cephalometricsweretakenbeforeandaftertreatment.T

5、hechangesofsoftandhard-tissueprofilewerestudiedwithcomputer-aidedX-raycephalometricanalysis.Results（1）Therelationshipbetweenthemaxillaryandthemandibledidnotchangesignificantly［SNA，SNB，ANBhadnosignificantdifferenceincephalometricmeasurement（P＞0.05）］.（2）L1-MP，U1-L1，U1-NA，L1-

6、NB，U1-L1anglechangesinhardtissuehadsignificantdifferenceincephalometricmeasurement（P＜0.01）.Theupperandloweranteriorteethweremoreretrusive，andthetrippingofincisordecreasedsignificantly.（3）Analysisofrelatedprojectscephalometricshowedthatlateralappearanceimprovedsignificantly

7、，SofttissueCephalometricrelatedCm-Sn-Ls、UL-UI、LL-LI、Pos-Po、A′UL-B′LLmeasurementsincreasedsignificantly；Ns-Sn-Pogandotherindicatorsinsofttissuealsoimproved.ConclusionSoftandhard-tissueprofileimprovesignificantlyafterorthodontictreatmentwithteethextractioninbimaxillaryprotru

8、siveadults，however，therelationshipbetweenthemaxillaryandthemandibledonotchangesignificant