Properties of a New Dental Photocurable Resin based on the Expanding Monomer and Three- component Photoinitiator System-中国期刊网

摘要 Thepurposeofthisstudywastouseathree-componentphotoinitiationsystemcomprising1wt%CQ(camphorquinone),2wt%DMAEMA(2-(dimethylamino)ethylmethacrylate)and2wt%Ph2I+PF6-(diphenyliodoniumhexafluorophosphate)toinitiatethecopolymerizationofthematrixresinswhichcombinebisphenol-S-bis(3-methacrylate-2-hydroxypropyl)ether(BisS-GMA)withtheexpandingmonomerunsaturatedspiroorthoesters2-methylene-1,4,6-trispiro[4,4]nonane(MTOSN),forminimizingthevolumetricshrinkagethatgenerallyoccursduringpolymerization.ItwashypothesizedthatMTOSNwouldexpandvolumetricallyduringpolymerizationunderthethree-componentphotoinitiatorsystemandfurtherreductionsinvolumetricshrinkagewouldbeobtained.Theperformancestudywhichconsistsofdegreeofconversionandconditionofthering-openingreactionsofMTOSN,volumetricshrinkageandmechanicalpropertiesincludingtensilebondstrength,compressivestrengthandVicker'shardnesswerecarriedoutrespectivelybyFouriertransferinfrared,thedilatometerandtheuniversaltestingmachine.Theresultssupportedthatthedentalcompositesbasedontheexpandingmonomerandthree-componentphotoinitiatorsystemengenderedagreaterdecreaseofvolumetricshrinkageandbettermechanicalproperties.

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Properties of a New Dental Photocurable Resin based on the Expanding Monomer and Three- component Photoinitiator System

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Properties of a New Dental Photocurable Resin based on the Expanding Monomer and Three- component Photoinitiator System

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