偏突颌畸形下颌骨三维重建及测量的研究

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1、·中文论著摘要·偏突颌畸形下颌骨的三维重建及测量研究目的应用三维CT对偏突颌畸形患者下颌骨进行三维重建和测量，比较双侧下颌骨解剖形态差异及下颌管位置，同时了解患者术后两侧颌面部感觉改变的情况，以给临床医生提供有意义的信息，减少对下牙槽神经的损伤。方法36例行双侧下颌支矢状劈开截骨术的偏突颌畸形患者，所有患者术前都进行TCT颅颌面扫描，扫描的影像数据用DICOM格式储存，采用软件Surgiease5．O(比利时)读取图像数据，进行颅颌面三维重建，测量下颌骨及下颌管相关结构，测量结果采用SPSSl6．0软件包进行统计学分析，对同一患者双侧不同平面各对应测量指标进行配对t检

2、验，此外，所有患者术后有无发生下牙槽神经损伤情况都进行了随访，并进行比较。结果①从下颌小舌到下颌角平面，下颌骨厚度的变化呈现递增趋势，偏侧和对侧差异有显著性(P

3、牙槽神经和发生意外骨折。2．SSRO手术过程中对于偏突颌畸形患者双侧应分别对待，特别要注意行下颌升支劈开对侧时用力要小以免发生意外骨折，骨凿进入骨松质后对侧要比偏侧应更向外侧骨板倾斜。术前了解这一特点，有利于提高正颌手术成功率，减少并发症。关键词三维CT；下颌管；下颌支矢状骨劈开术；偏突颌畸形：感觉神经障碍2·英文论著摘要·Three—-dimensionalreconstructionandmeasurementofthemandibularanatomyinpatientswithlaterognathismdeformityObjectiveThree-dime

4、nsionalreconstructionandmeasurementofmandibleinpatinentswithlaterognathismdeformityusingthree-dimensionalcomputedtomography,bilateralmandibularanatomyandmandibularcanalanatomicallocationwerecompared，patientswhounderwentthefeelingchangesofbothsideswerecomparedtoo，inordertogiveclinicianst

5、oprovideameaningfulinformationsandtoreduceinjuriestotheinferioralveolarnerve．Methods36caseswithlaterognathismdeformitywhounderwentSSROtookcranialmaxillofacialCTscans．UsingthesoftwareSurgice5．0(Belgium)toreadtheimagedata,conductcranialandmaxillofacialreconstruction，measurethestructuresof

6、mandibleandmandibularcanal．AllmeasurementswereanalyzedwithSPASS16．0，beside,allpatientspostoperativehavebeenhappeningalveolarnerveinjurysymptomswerefollowedupbytelephone．ResultsThethicknessofthemandibleincreasedfrommandibularformentothelowerborderofthemandible．Thereweresignificantdiffere

7、ncesbetweendeviatedsidesandcontralateralsides(P<0．05)；Therewerenosignificantdifferencesbothsideswithregardtobuccalbonecortexwhichgraduallyincreasedinthickness(P>0．05)；Thereweresignificantdifferencesbetweendeviatedsidesandcontralateralsidesaboutthewidthofbonemarrowspaceatthebucc