BONDSTRENGTHOFSELFETCHADHESIVESWITHPRIMARYANDPERMANENTTEETHDENTIN–INVITROSTUDY.docx

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1、DOI:IQ5272/jimab.2012182168Journa1ofIMAB-Annua1Proceeding(ScientificPaper2012vo118book2BONDSTRENGTHOFSE1F-ETCHADHESIVESWITHPRIMARYANDPERMANENTTEETHDENTIN-INVITROSTUDYNata1iaGatevai,Va1entinDikov21) DepartmentcfPediatricDentistryFacu1tyofDenta1MedicinMedica1UniversitySCrfia2) Technica1UniversitSOfiAB

2、u1gariaSUMMRY:Objective:Theaimofthisstudywastocomparedentinbondstrengthofprimaryandpermanentteethwithse1f-etchingadhesivesystems.Methods:On40intactspecimensofprimaryandpermanentteethwascreatedf1atdentinsurfacesThepatternsweredividedin4groupsTwodificrentse1f-etchingadhesivesystemswereused-onetwosteps

3、(dheSE,VivaDent)andoneonestep(AdheSE0neVivaDcnt).Resincompositebui1d-upswerenstructedbymeansofConvetiona1copperringafterapp1yingtheadhesiveThespecimenswereStcredhwaterfor72hatroomtemperatureAfterthatecimensweretestedformacrotensi1ebondstrength.Debondedsurfaceswereana1yzedbySEM.Conc1usions:Themeasure

4、dva1uesofdentinbondstrengthafterapp1yingse1ftchingadhesivesarestatistica11ysignificantingroupofpermanentteethincomparisonwithgroupofprimaryteethandforbothadhesivegenerations.Twostepsse1f-etchingadhesiveprovidesignificantstrongerdentinbondstrengthWithbothdentitionsincomparisonWithonestepse1f-etchinga

5、dhesive.Keywords:primaryteethpermanentteethse1fetchingadhesives,bondStrengthSEMINTRODUCTIONCurrentse1f-primingand1atesta11-in-oneadhesivesrepresentanattractiveadditiontotheday-to-daydenta1practiceTheyareeasytouse,becausetheyhaveshortenedapp1icationprotoco1,whichisanimportantadvantageinpediatricdenti

6、stryPurposeofthese1f-etchingadhesivessystemsare:- Simp1ifyingthebondingprocedures;- Minimizingthetechnica1sensitivityoftheapp1icationsprotoco1throughthee1imination或thestepofetchingrinsinganddryingoftoothstructures(35).Thesegoa1sareobtainedthroughtheinc1udedinthecompositionsourmonomerwhich:- Simu1tan

7、eousetchandprimedentin;- Faci1itatethedisso1utionofcrysta1saroundco11agenfibri1sandtheresininfi1trationbeyondtheveredwithsmear1ayersurfaceintheunder1yingdentinmatrix(31,35).Whi1ethedentinebondstrengthofpeimanentteethisexaminedquiteOftensignificant1ysma11ernumberofresearchesareaimedattestingthedentin

8、ebondStTengthofprimaryteeth(IQ1526,35).StUdieScomparingsimi1aradhesivesystemsshowresu1tvaryingfromtheabsenceofanysignificantdifferences(7,12,14,2Q2930)tohigher(31530)cr1ower(3152823643)va1uesoftheachievedstrengthbyprimaryteethmeasureduptopermanentteethItisaccepted,thatchemica1,physio1ogica1andmicrom

9、orpho1ogica1differencesareresponsib1efcrtheweakerdentinebondstrengthbyprimaryteethasa1owerdegreeofminera1izationana1Iersizeandamountofdentinetubu1eandtheconnecteddentinepermeabi1ity;aswe11asbiggerreactivitytowardsacidConditionerS(2Z1Q19,21,23i230).Thepurposeofthisstudyisto:- comparethedentinebondstr

10、engthaftertheapp1icationofse1f-etchingadhesivesystemsbyprimaryandpermanentteeth;- comparethefai1uretypetroughobservationwithscanninge1ectronmicroscopeafterthemacrotensebondstrengthtestMETHODANDMATERIA1STheexaminationnsistsof40intactteeth(20primarymo1arsand20permanentpremo1arsandmo1ars).Theteetharefr

11、omhea1thyadu1tpatientsandChi1drenaftersignedconsentfromthem/theirparentsfortheusageoftheseteethintheexpertmentPrimaryteethareextractedbecauseofphysio1ogica1resorptionTheteetharedividedonrandomprincip1e(on1yprimaryandon1ypermanent)in4groupsThedivisionisshownintab1e1Tab1e1.Groupingofexpementa1samp1esG

12、roupNAdhesivesystemGroup1-primaryteeth10AdheSE(Ivoc1arVivadent)-2-steps-se1f-primingGroup2-permanentteeth10AdheSE(Ivoc1arVivadent)-2-steps-se1f-primingGroup3-primaryteeth10AdheSEOneGvoc1arVivadent)-1-step-aUinoneGroup4-permanentteeth10AdheSEOne(Ivoc1arVivadent)-1-stcp-a11inonePreparationofteethsurfa

13、ceAsectionismadeonthecentra1occ1usa1fissureofeveryteethinmedio-dista1directionwithturbineroundborerGSO806314001534012forprimaryteethand806314001534014forpermanentteeth),underwater-airo1ing.ThedepthofthesectionisdependantonthediameteroftheborerInordertoremovetheocc1usa1ename1andpartsofdentineanothers

14、ectionismade,para11e1totheocc1usa1SUrfaCGinthecontro11eddepth,detminedbytheinitia1sectionofthebarenThismanipu1ationismadewithUirbinediamondfissureborerGSO806204108524835010)andwat-airo1ingAfterwardsthesurfaceis1eve1edwithabrasivediswhichisbeingrep1acedaftereverytoothThemode1sareobservedwithoptica1mi

15、croscopeO1YMPUSVAN0X-T,under25-100xmagnification,sothatthecomp1eteremova1oftheename1fromtheocc1usa1SUrfeCecanbeverifiedPerformoftherestorationAcopperring(!15)withheight5mmanddiameter5mmisusedforthemanufactureofcomparab1eandpredictab1esurfacesoftherestorationFactory-madestandardcopperringsarecutWitht

16、hehe1poftwo-sidediamonddisksinCrdertOachievethedesiredheightAdhesivesystemswereapp1iedaccordingtothemanufactutesinstructionsBya11patternstheapp1icationoftheadhesivesystemismadedirect1yontheocc1usa1dentinesurfacewithadiameter;comparab1etotheoneofthecopperringOnthearrangeddentinesurfaceisp1acedthebeforehandpreparedcopperringWithinthisringisp1acedone1ayer1ightcurecom