Effect of disinfection on adhesion of reline polymers
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Data
2007-01-01
Autores
Gonçalves, Andréa [UNESP]
Machado, Ana Lucia [UNESP]
Vergani, Carlos Eduardo [UNESP]
Giampaolo, Eunice Teresinha
Pavarina, Ana Claudia [UNESP]
Título da Revista
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Título de Volume
Editor
Taylor & Francis Ltd
Resumo
Cylinders (3.5 x 5.0 mm) of the reline resins Kooliner (K), New Truliner (N), Tokuso Rebase Fast (T), and Ufi Gel Hard (U) were bonded to cylinders (20 x 20 mm) of the denture base resin Lucitone 550 (L), and samples were divided into two controls and four test groups (n = 8). Shear tests (0.5 mm/min) were performed after polymerization or immersion in water (37 degrees C) for 7 days (controls); two or seven cycles of disinfection by immersion in sodium perborate (50 degrees C/10 min) or microwave irradiation (650 W/6 min). Statistical analyses (alpha = 0.05) revealed that two cycles of microwave and chemical disinfection increased the mean bond strengths of materials T (9.08 to 12.93 MPa) and L (18.89 to 23.02 MPa). For resin L, seven cycles of chemical (15.72 MPa) and microwave (17.82 MPa) disinfection decreased the shear bond strength compared with the respective control (21.74 MPa). Resins U (13.12 MPa), K (8.44 MPa), and N (7.98 MPa) remained unaffected.
Descrição
Palavras-chave
bond strength, dental polymers, microwave irradiation
Como citar
Journal of Adhesion. Abingdon: Taylor & Francis Ltd, v. 83, n. 1-3, p. 139-150, 2007.