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- Title
Preparation of a low viscosity urethane-based composite for improved dental restoratives.
- Authors
Yuling XU; Juntao ZHANG; Haibo WANG; Dong XIE
- Abstract
Several new urethane-based dimethacrylates were synthesized, characterized and used to formulate the resin composites. Compressive strength (CS) was used as a screen tool to evaluate the mechanical property of the formed composites. Flexural strength, diametral tensile strength, water sorption, degree of conversion and shrinkage of the composites were also evaluated. The results show that most of the synthesized urethane-based dimethacrylates were solid, which are not suitable to dental filling restorations. However, it was found that liquid urethane-based dimethacrylates could be derivatized using asymmetrical methacrylate synthesis. Not only the newly synthesized urethane-based dimethacrylates showed lower viscosity values but also their constructed composites exhibited higher mechanical strengths. Without triethyleneglycol dimethacrylate (TEGDMA) addition, the new urethane-constructed composites showed significantly lower water sorption and shrinkage.
- Subjects
DENTAL fillings; DENTAL resins; URETHANE; FLEXURAL strength; POLYMERIZATION
- Publication
Dental Materials Journal, 2018, Vol 37, Issue 3, p400
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2017-162