| Shear bond strength of repairs in porcelain conditioned with laser. | |
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MedLine Citation:
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PMID: 22851485 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The aim of this study was to evaluate the shear bond strength of repairs in porcelain conditioned with laser. Sixty porcelain discs were made and six groups were formed (n = 10): G1: conditioning with laser with potency 760 mW; G2: conditioning with laser with potency 760 mW and application of 37% phosphoric acid for 15 s; G3: conditioning with laser with potency 900 mW; G4: conditioning with laser with potency 900 mW and application of 37% phosphoric acid for 15 s; G5: application of 37% phosphoric acid for 15 s (group control) and G6: application of 10% hydrofluoric acid for 2 min. The composite resin was insert of incremental layers at the porcelain surface aided with a metal matrix, and photoactivation for 20 s each increment. The specimens were submitted to a thermal cycling by 1000 cycles of 30 s in each bath with temperature between 5 and 55°C. After the thermal cycling, specimens were submitted to the shear bond strength. The results were evaluated statistically through analysis of variance and Tukey's tests with 5% significance. The averages and standard deviation founded were: G1, 11.25 (±3.10); G2, 12.32 (±2.65); G3, 14.02 (±2.38); G4, 13.44 (±2,07); G5, 9.91 (±2,18); G6, 12.74 (±2.67). The results showed that the femtosecond laser produced a shear bond strength of repairs in porcelain equal to the hydrofluoric acid and significantly superior to the use of phosphoric acid. Microsc. Res. Tech., 2012. © 2012 Wiley Periodicals, Inc. |
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Authors:
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Hamilton Pedrazzi; Cristina Yoshie Garcia Takeuchi; Sabrina Spinelli Cioffi; Marília Regalado Galvão; Marcelo Ferrarezi De Andrade; Osvaldo Luiz Bezzon |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-7-31 |
Journal Detail:
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Title: Microscopy research and technique Volume: - ISSN: 1097-0029 ISO Abbreviation: Microsc. Res. Tech. Publication Date: 2012 Jul |
Date Detail:
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Created Date: 2012-8-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9203012 Medline TA: Microsc Res Tech Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 Wiley Periodicals, Inc. |
Affiliation:
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Department of Dental Materials and Prostheses, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil. hamilton@forp.usp.br. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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