| Texto completo | |
| Autor(es): |
Prieto, Lucia Trazzi
[1]
;
Souza-Junior, Eduardo Jose
[2]
;
Pimenta Araujo, Cintia Tereza
[3, 1]
;
Lima, Adriano Fonseca
[1, 4]
;
dos Santos Dias, Carlos Tadeu
[5]
;
Maffei Sartini Paulillo, Luis Alexandre
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Dept Restorat Dent, Piracicaba Dent Sch, Piracicaba - Brazil
[2] Univ Estadual Campinas, Dept Restorat Dent, Piracicaba Dent Sch, Dent Mat Div, Piracicaba - Brazil
[3] Fed Univ Jequitinhonha & Mucuri Valley UFVJM, Fac Hlth Sci, Dept Dent, Diamantina - Brazil
[4] Nove Julho Univ, Dept Restorat Dent, Sch Dent, Sao Paulo - Brazil
[5] Univ Sao Paulo, Higher Sch Agr, Dept Math Stat, Piracicaba - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY; v. 22, n. 1, p. 54-58, JAN 2013. |
| Citações Web of Science: | 1 |
| Resumo | |
Purpose: The aim of this study was to evaluate the Knoop microhardness and microshear bond strength (MSBS) of dual-cured luting systems and flowable resin bonded to leucite-reinforced ceramics and enamel. Materials and Methods: Eighty bovine incisors were randomly divided into four groups per test (microhardness and microshear; n = 10) according to the bonding procedure: Excite DSC/Variolink, Clearfil SE Bond/Panavia F, Adper Scotchbond Multi-Purpose Plus/RelyX ARC, and Adper Single Bond 2/Filtek Z350 Flow. For the KHN measurement, the cement was applied on the enamel surface and light-cured through a ceramic disk (5 mm diameter x 1.2 mm thick). Five indentations were performed in each specimen and measured at HMV-2. For the microshear test, two cylinders of a leucite-reinforced ceramic (1 mm diameter x 2 mm height) were bonded to the enamel substrate in accordance with the bonding procedures previously established. One cylinder was tested 24 hours after cementation, and the other was subjected to thermocycling (2000 cycles) and then submitted to an MSBS test. The data from the hardness and bond strength tests were subjected to one-and two-way repeated-measures analysis of variance (ANOVA), respectively, and to Tukey's test (alpha = 0.05). Results: Scotchbond/RelyX ARC presented higher values of bond strength, while SingleBond/Z350 Flow showed lower values. The thermocycling promoted a reduction in the bond strength values for all groups. Panavia F presented higher values of KHN, and the flowable resin presented the lowest. RelyX ARC and Variolink presented intermediate values on hardness evaluation. Conclusions: For ceramic cementation, dual-cured resin luting systems promoted more reliable bonding and microhardness values than the flowable resin. (AU) | |
| Processo FAPESP: | 09/08420-3 - Sistemas de fixação resinosos: nanoinfiltração, dureza e microcisalhamento |
| Beneficiário: | Luis Alexandre Maffei Sartini Paulillo |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |