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- Title
Polymerization shrinkage, flexural and compression properties of low-shrinkage dental resin composites.
- Authors
Jeong-Kil PARK; Geun-Ho LEE; Jong-Hwa KIM; Mi-Gyoung PARK; Ching-Chang KO; Hyung-II KIM; Yong Hoon KWON
- Abstract
This study evaluated the polymerization shrinkage, flexural and compressive properties of low-shrinkage resin composites. For the study, four methacrylate-based and one silorane-based resin composites were light cured using three different light-curing units (LCUs) and their polymerization shrinkage, flexural (strength (FS) and modulus (FM)) and compressive (strength (CS) and modulus (CM)) properties were evaluated. Data were statistically analyzed using ANOVA and a post-hoc Tukey test. The polymerization shrinkage ranged approximately 7.6-14.2 μm for 2-mm thick specimens depending on the resin product and LCU. Filtek LS showed the least shrinkage while the rest shrank approximately 13.2-14.2 μm. However, Filtek LS showed the greatest shrinkage difference for the used LCUs. FS and CS of the tested specimens ranged 96.2-152.1 MPa and 239.2-288.4 MPa, respectively, depending on the resin product and LCU. The highest and lowest FS and FM were recorded for the methacrylate-based resin composites. Among the specimens, Filtek LS showed the lowest CS and CM.
- Subjects
POLYMERS in dentistry; POLYMERIZATION; FLEXURAL strength; DENTAL resins; DENTAL materials; DENTAL bonding
- Publication
Dental Materials Journal, 2014, Vol 33, Issue 1, p104
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2013-126