上颌后牙区正常解剖结构的留锥形束ct分析

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1、万方数据山东大学硕士学位论文posteriorteethandtheiradjacentanatomicalstructuresObjective：Tomeasureandanalyzethepositionalrelationshipofmaxillaryposteriortoothrootsandtheiradjacentanatomicalstructurestoprovidereferencesforclinicaltreatmerit．Methods：ThecasesmettheinclusioncriteriawerechosenfromCBCTdata

2、baseofStomatologyHospitalofShandongUniversity．GALAXISsoftwareWasusedtoobservetheclassificationoftherelationshipbetweentheposteriormaxillarytoothrootsandthemaxillarysinusfloor,andtocounttheincidenceofvarioustypes．Theverticaldistancefromtherootsapicaltothebottomofthemaxillarysinusandtheh

3、orizontaldistancefromrootmidpointtotheadjacentalveolarboneplateweremeasuredandcarriedoutstatisticalanalysis．Results：Thetypethatrootapicalandmaxillarysinuswasseparatedbyboneplateshadthehighestincidence．Themesiobuccalrootofmaxillarysecondmolarhadtheshortestverticaldistancetothemaxillarys

4、inus(尸

5、otshaveacloserelationshipwiththesinusfloorandthealveolarboneplatewhichshouldbenotedintheclinicaltreatment；CBCTCanshowtherelationshipofposteriormaxillarytoothrootsandtheiradjacentanatomicalstructuresclearly,suitableforaccuratediagnosisanddesignbeforetreatment．PartlICone．beamCTanalysisof

6、themaxillarysinusanatomyObjective：ToobservethenormalanatomicalstructuresofthemaxillarysinususingCBCTanditssupportingsoftware．Understandingthenormalanatomyofthemaxillarysinusandprovidereferencefordentaltreatment．Methods：The150casesmettheinclusioncriteriawerechosenfromCBCTdatabaseofStoma

7、tologyHospitalofShandongUniversity．GALAXISsoftwarewasusedtoobservetheclassificationofthebottomwallofthemaxillarysinus，theconditionof4万方数据山东大学硕士学位论文sinusseptaandthelowestpointofthemaxillarysinus，theposteriorsuperioralveolarcanalandthelateralwallthickness，andcarriedoutstatisticalanalys