| Record ID | marc_university_of_toronto/uoft.marc:5604296969:2406 |
| Source | University of Toronto |
| Download Link | /show-records/marc_university_of_toronto/uoft.marc:5604296969:2406?format=raw |
LEADER: 02406nam 2200277 4500
001 AAIMR27457
005 20071128104346.5
008 071128s2007 onc|||||||||||||| ||eng d
020 $a9780494274576
039 $feh
100 1 $aShokati, Babak.
245 10 $aEffect of salivary esterase on integrity and fracture toughness of resin-dentin interface.
260 $c2007.
300 $a183 leaves.
500 $aSource: Masters Abstracts International, Volume: 45-06, page: 3116.
502 $aThesis (M.Sc.)--University of Toronto, 2007.
506 $aElectronic version licensed for access by U. of T. users.
520 $a"Human Salivary Derived Esterase" (HSDE) degrades dental composite resin restorative materials.Results and conclusions. Significantly higher amounts of methacrylic acid (MAA) and Bisphenol-A-bis [2, 3-dihydroxypropyl]-ether (Bis-HPPP) were produced in HSDE than in PBS. 180-day HSDE incubated specimens had a lower fracture toughness (KIci) than the non-incubated group (P<0.05).KIci values of PBS incubated groups were not significantly different from that of the non-incubated group. There was a significant negative correlation between the KIci values and Bis-HPPP production.Hypothesis. HSDE degrades the resin-dentin interface to produce biodegradation by-products in amounts which are negatively correlated with a reduction in the interfacial fracture toughness of the resin-dentin bond.Methods. Mini short-rod specimens (n=10/group), fabricated using composite (Z250) and adhesive system (Scotchbond Multi Purposes), were either not incubated; or incubated in Phosphate-Buffered Saline (PBS) or HSDE media. Degradation products were isolated and specimens were fracture toughness tested following 30, 90 or 180-day incubation periods.
590 $aROBARTS MICROTEXT copy on microfiche.$5CaOTU
653 $aHealth Sciences, Dentistry.
655 7 $aTheses$xDentistry.
856 41 $uhttp://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=452997&T=F$yConnect to resource
949 $atheses masters$wALPHANUM$c1$i6262793-1001$j2$lMICROTEXT$mMEDIA_COMM$rN$sY$tMICROFORM$u3/12/2007
949 $aOnline resource 452997$wASIS$c1$i6262793-2001$lONLINE$mE_RESOURCE$rY$sY$tE_RESOURCE$u3/12/2007
949 $aThesis$wLC$c1$i31761039221171$lREFERENCE$mDENTISTRY$rN$sY$tTHESIS$u7/3/2007
949 $aThesis$wLC$c2$i31761039221064$lSTACKS$mDENTISTRY$rY$sY$tTHESIS$u7/3/2007