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不同处理方法对牙本质粘接界面纳米渗漏及粘接强度的影响.docx

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不同处理方法对牙本质粘接界面纳米渗漏及粘接强度的影响 Introduction Dentalbondingisacommondentalprocedurethatinvolvesadheringadentalrestorationorfillingtoatoothusinganadhesivematerial.Thesuccessofdentalbondingdependsontheabilityoftheadhesivematerialtoformastrongbondwiththetoothstructure.However,thebondinginterfacecanbecompromisedbyseveralfactors,suchasmicroleakage,whichcanaffectthelongevityandperformanceofthedentalrestoration.Thispaperaimstoexploretheimpactofdifferenttreatmentmethodsonnanoleakageandbondstrengthatthedentinbondinginterface. ImpactofTreatmentMethodsonNanoleakage Nanoleakagereferstotheinfiltrationoffluids,ions,orparticlesintothespacebetweentheresinmaterialandtoothstructureatananoscale.Thispermeationcancompromisetheintegrityoftheadhesivebond,leadingtothefailureoftherestoration.Differenttreatmentmethodshavebeenproposedtoreduceorpreventnanoleakageatthedentinbondinginterface. Onecommontechniqueforreducingnanoleakageistheapplicationofanetch-and-rinseadhesivesystem.Thissysteminvolvestheapplicationofphosphoricacidtothetoothsurface,whichremovesthesmearlayerandexposesthecollagenfibersinthedentin.Theexposedcollagenfibersprovideasurfacefortheadhesiveresintobondwith,therebycreatingastrongbond.However,theetchingprocesscanalsocreatenanoleakagepathsinthedentin,compromisingtheadhesivebond.Additionally,theetchedsurfacemaybecomecontaminatedwithdebrisorresidualacid,resultinginfurthernanoleakage. Anothertechniqueforreducingnanoleakageistheuseofaself-etchadhesivesystem.Inthissystem,theacidisincorporatedintotheadhesiveresin,eliminatingtheneedforaseparateetchingstep.Theacidintheadhesiveresindissolvesthesmearlayerandexposesthecollagenfibersinthedentin,creatingastrongbond.Self-etchsystemshavebeenshowntoreducenanoleakagecomparedtoetch-and-rinsesystems;however,theymaynotprovidethesamebondstrengthasetch-and-rinsesystems. Athirdtechniqueforreducingnanoleakageistheapplicationofadesensitizeragent.Desensitizeragentsareappliedaftertheetchingstepandbeforetheapplicationoftheadhesiveresin.Theseagentshavebeenshowntor