Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/340361
Type: Artigo
Title: Effect of argon plasma surface treatment on bond strength of resin composite repair
Author: Ayres, A. P. A.
Hirata, R.
Fronza, B. M.
Lopes, B. B.
Ambrosano, G. M. B.
Giannini, M.
Abstract: Objectives: This study evaluated the effect of argon plasma treatment (PLA) and its combination with sandblasting (SAN), silanization (SIL), and hydrophobic bonding resin (HBR) application on the micro-shear bond strength of water-aged restorative resin composite to a newly placed composite, simulating restoration repair. Methods and Materials: Forty-five light-cured composite plates (20-mm long x 20-mm wide x 4-mm thick) were fabricated using a hybrid composite and stored at 37 degrees C in distilled water for six months. The aged composite surfaces were treated according to the following experimental groups, varying both treatment and order of application: 1) SAN + SIL + HBR (control), 2) SAN + PLA for 30 seconds + SIL + HBR, 3) SAN + SIL + PLA + HBR, 4) PLA + SIL + HBR, 5) PLA + SIL, 6) PLA + HBR, 7) SIL + PLA + HBR, 8) SIL + PLA, and 9) PLA. After the surface treatments, four fresh resin composite cylinders (1.5-mm high x 1.5-mm diameter) of the same composite were built on each aged composite surface using a silicone mold. After water storage for 24 hours or one year, the specimens were submitted to shear bond strength testing. Data were statistically analyzed by two-way analysis of variance and Tukey's test (5%). Results: Groups 1, 2, and 4 presented significantly higher bond strength means at 24 hours, although group 4 did not differ from group 7. Groups 5, 8, and 9 demonstrated significantly lower means than the other groups. Even though groups 1 and 2 had a significant bond strength reduction after 1 year, they still demonstrated higher bond strength at one year of storage. Conclusions: While PLA application combined with surface treatment methods demonstrated high bond strength results, this treatment alone was not as beneficial as other methods that included SAN, SIL and HBR.
Subject: Resistência de união
Resinas compostas
Country: Estados Unidos
Editor: University of Washington/School of Dentistry
Rights: Fechado
Identifier DOI: 10.2341/18-050-L
Address: https://www.jopdentonline.org/doi/abs/10.2341/18-050-L
Date Issue: 2019
Appears in Collections:FCM - Artigos e Outros Documentos
FOP - Artigos e Outros Documentos

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