下颌后牙区颊侧骨皮质厚度及牙槽宽度的CBCT测量分析-论文.pdf

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1、·604·口腔医学2014年8月第34卷第8期下颌后牙区颊侧骨皮质厚度及牙槽宽度的CBCT测量分析穆荣荣，张丹，张扬[摘要]目的应用CBCT测量成人下颌后牙区颊侧骨皮质厚度及牙槽宽度，为临床选择适宜微种植体种类及植入部位提供参考。方法从中国医科大学口腔医院影像科资料库中随机选取68例成人患者的CBCT。男36例，女32例；年龄18～31岁，平均22．8岁。分别测量下颌第一前磨牙至第二磨牙近中两牙根间距牙槽嵴顶3、6、9mm处骨皮质厚度及牙槽宽度，并对测量结果进行统计分析。结果下颌后牙区颊侧骨皮质厚度及牙槽宽度，左右两侧无统计学差异，性别间无统计学差异(P>0．05)

2、。在3个测量水平第一磨牙与第二磨牙根间颊侧骨皮质及牙槽宽度均最厚，第一前磨牙与第二前磨牙根间区最薄，差异有统计学意义(P<0．05)。结论应用CBCT三维重建能够对拟植入微种植体部位进行测量分析，充分了解植入部位骨质骨量情况及相关解剖条件。下颌后牙区不同部位颊侧骨皮质厚度及牙槽宽度存在差异，有自殆方向根方，自近中向远中增加的趋势，微种植体植入过程中应考虑这一因素。[关键词]骨皮质厚度；牙槽宽度；微种植体支抗；CBCT[中图分类号]R814．42[文献标识码]A[文章编号]1003-9872(2014)08—0604—04Corticalbonethicknessin

3、thebuccaiposteriorregionandbonedepthofmandible：ACBCTanalysisMURongrong，ZHANGDan，ZHANGYang．(DepartmentofOrthodontics，StomatologicalColleage，ChineseMedicalUniversity，Shenyang110002，China)Abstract：0bjectiveToevaluatethethicknessofbuccalcorticalboneandbonedepthatdiferentheightsinposteriora

4、reaofman—diblewheremini—plantswereplaced．MethodsSixty—eightcone-beamCT(CBCT)imageswereselectedrandomlyfromtheAffiliatedStomatologyHospital，ChinaMedicalUniversity，whichconsistedof36maleand32femalerangingfrom18to31yearsold．Thicknessofcorticalbonebetweenthefirstpremolardistalandthesecondm

5、olarmesialattheheightof3，6，and9mmfromthealveolarcrestwasdetermined．Thedatawereanalyzedstatistically．ResultsTherewasnosignificantdiferenceinthecorticalbonethicknessandbonedepthbetweentheleftandrightside(P>0．05)．Andnosignificantdiferencewasfoundbetweenmalesandfemales(P>0．05)．Thethickness

6、ofcorticalboneandbonedepthbetweenthefirstmolarandthesecondmolarinmandiblewasasitsmaximumat3heights．be．tweenthefirstpremolarandthesecondpremolarinmandiblethethicknessandbonedepthwasasitsminimumat3heights．Conclu·sionsThecorticalbonethicknessinthebuccalposteriorregionandbonedepthofmandibl

7、echangesalongwiththepositionchangingsagittallyandvertically，whichshouldbeconsideredinmini—plantsimplantation．Apositionasfarfromthealveolarcrestaspossibleandnearthedistalendofthearchisthebestinposteriorareaofmandible．Corticalbonethicknessandbonedepthofmandibleare，onaver—age，favorablef