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Trifunctional methacrylate monomers and their photocured composites with reduced curing shrinkage, water sorption, and water solubility

Paper ID Volume ID Publish Year Pages File Format Full-Text
12781 816 2003 7 PDF Available
Title
Trifunctional methacrylate monomers and their photocured composites with reduced curing shrinkage, water sorption, and water solubility
Abstract

Novel trifunctional methacrylates, 1,1,1-tris[4-(2′-acetoxy-3′-methacryloyloxypropoxy)phenyl]ethane (Ac-THMPE) and 1,1,1-tris[4-(2′-acetoxy-3′-methacryloyloxypropoxy)phenyl]methane (Ac-THMPM), have been prepared by acetylation of the hydrophilic hydroxyl groups of 1,1,1-tris[4-(2′-hydroxy-3′-methacryloyloxypropoxy)phenyl]ethane (THMPE) and 1,1,1-tris[4-(2′-hydroxy-3′-methacryloyloxypropoxy)phenyl]methane (THMPM), respectively, for use as dental monomers. Decrease in monomer viscosity resulted from the acetylation. Unfilled resins and composites based on the four trimethacrylates were evaluated for photopolymerization conversion, water contact angle, and curing shrinkage. Water sorption, water solubility, and flexural strength of the composites prepared from the trimethacrylate were measured. Those data obtained for the trimethacrylate-containing materials were compared with control 2,2-bis[4-(2′-hydroxy-3′-methacryloyloxypropoxy)phenyl]propane (bis-GMA)-based materials in order to evaluate the applicability of the trimethacrylates as dental monomers. The acetylation of hydroxyl groups appeared to be an effective method to decrease curing shrinkage, water sorption, and water solubility of the dental composites. When compared with the bis-GMA composite, the composites based on Ac-THMPM and Ac-THMPM showed much lower curing shrinkage, water sorption, and water solubility, along with approximately equal conversion and flexural strength.

Keywords
Dental composite; Trifunctional methacrylate; Acetylation; Contact angle; Curing shrinkage; Water sorption; Water solubility
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Trifunctional methacrylate monomers and their photocured composites with reduced curing shrinkage, water sorption, and water solubility
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 24, Issue 21, September 2003, Pages 3845–3851
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us