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- Title
Effect of activation mode on flexural strength in dual-polymerized resin cements.
- Authors
AMARAL, Marina; Di NICOLÓ, Rebeca; da ROCHA, João Carlos; de ARAÚJO, Rodrigo Máximo; de ARAÚJO, Maria Amélia Máximo
- Abstract
Objective To compare he influence of two activation modes on two similar dual-polymerized resin cements. Methods Bars (2 × 2 × 12 mm) of RelyX ARC (3M ESPE, MN, USA) (ARC) and Enforce (Dentsply, Rio de Janeiro, Brazil) (ENF) were prepared, and three types of polymerization method were tested: (1) L: LED photoactivation/40 s; (2) H: halogen Light activations/40 s, and (3) C: chemical activation only (Complete absent of light). The groups were ARC-L; ARC-H, ARC-C, Enf-L, Enf-H, and Enf-C (n = 8). After 24 h, the specimens were tested using the 3-point bending method on a universal testing machine. Results The ARC cement showed superior flexural strength results. The mode of activation revealed similar results on both cements tested, but light-activated groups (with LED or Halogen light) showed higher flexural strength values than did the chemical-activation-only group. Conclusion (1) RelyX ARC cement showed superior flexural strength when compared with Enforce; and (2) light activation resulted in better flexural strength values when compared to chemical activation on dual-polymerized resin cements.
- Subjects
RIO de Janeiro (Brazil); POLYMERIZATION research; PHOTOACTIVATION; ADHESIVE cements; FLEXURAL strength; ACTIVATION (Chemistry)
- Publication
RGO: Revista Gaúcha de Odontologia, 2013, Vol 61, Issue 3, p363
- ISSN
0103-6971
- Publication type
Article