桩道预备时机及充填材料对根管冠方微渗漏的影响.pdf

LanYu—yan，Master， Effectsofimmediateversusdelayedpostspacepreparationoncoronal Attendingphysician， microleakageusingdifferentfillingmaterials Departmentof Prosthodontics，Laboratory LanYu—yan，PuLin，HuangHal-xia，FanLi—yuan，LiuMin，SunLi—bo(DepartmentofProsthodontics OfOr0facialReconstruction LaboratoryofOrofacialReconstructionandRegeneration，theAffiliatedStomatologyHospitalof andRegeneration，the SouthwestMedicalUniversity，Luzhou646000，SichuanProvince，China) AffiliatedStomatology HospitaIofSouthwest Abstract MedicalUniversity,Luzhou BACKGROUND：Atpresent，thereisnoconsensusonthetimjngofpostspacepreparationintheclinical 646000．SichuanProvince medicaltreatment．ButitcanbeinferredfrOm somestudiesthatpostspacepreparationmayaffectcoronal China microleakageusingdifferentfillingmaterials． OBJECTIVE：Tocomparetheeffectsofimmediatepostspacepreparationanddelayedpostspace C0rrespOndingauthor： preparationrestorationoncoronalmicroleakageusingdifferentfillingmaterials． PuLin．Master，Attending METHODS：Forty—eightextractedandsingle-rootedpremolarswererandomlydividedintosixgroups(n=8 physician，Departmentof pergroup)：premolarswerefilledwithAH—pluspasteandgutta—perchawiththeimmediatepostspace PrOsthOdOntjcs Laboratory preparationasgroupA1：premolarsfilledwithmineraltrioxideaggregatepasteandgutta-perchawiththe OfOrofacialReconstruction immediatepostspacepreparationasgroupA2；premolarsfilledwithAH--pluspasteandgutta--perchawith andRegeneration，the thedelayedpostspacepreparation1weeklaterasgroupB1：premolarsfilledwithmineraltrioxide AffiliatedStomatology HospitalofSouthwest aggregatepasteandgutta-perchawiththedelayedpostspaceprepara