Journal article
Effects of simulated pulpal pressure, mechanical and thermocycling challenge on the microtensile bond strength of resin luting cements
International journal of adhesion and adhesives, Vol.60, pp.69-74
07/01/2015
DOI: 10.1016/j.ijadhadh.2015.03.009
Abstract
This study aimed at comparing the microtensile bond strength (mu TBS) of three simplified luting strategies after different aging processes. Sixty human molars were prepared to expose flat middle dentin surfaces which received the following luting procedures: (i) SB+ARC - two-step etch-and-rinse adhesive+conventional resin cement (Adper Singlebond 2 + RelyX ARC, 3M-ESPE); (ii) S3 + PAN - one-step self-etch adhesive + conventional resin cement (Clearfil S3 + Panavia F2.0, Kuraray Medical); (iii) U200 - self-adhesive resin cement (RelyX U200,3M-ESPE). The specimens were finally restored by indirect resin composite procedures (Filtek Z100,3M-ESPE). The aging regimens were water storage at 37 degrees C for one week (control), one week of 20 cm H2O simulated pulpal pressure (SPP), 200,000 mechanical loading (ML) cycles, or 5000 thermal cycles (TC). The mu TBS data was analyzed by two-way ANOVA and Tukey's test (alpha = 0.05). SB + ARC showed significantly higher mu TBS for control and all aging processes (p < 0.001). Nevertheless, TC had no effect on the bond strength of SB+ARC. No difference in mu TBS was observed between S3 + PAN and U200 after SPP (p = 0.251), but significant lower values were found for U200 after ML (p = 0.010) besides being superior in the control groups (p < 0.001). For U200, all ageing regimens induced significant reductions in the bond strength (p < 0.001) with a more pronounced negative effect after ML S3 + PAN showed significant lower bond strength (p = 0.010) only after ML aging. Two-step etch-and-rinse adhesive associated with dual-curing conventional resin cement may present the highest overall mu TBS. However, the use of S3 one-step self-etch adhesive along with conventional resin cements may provide the most stable luting performance under the tested aging strategy. (C) 2015 Elsevier Ltd. All rights reserved.
Details
- Title: Subtitle
- Effects of simulated pulpal pressure, mechanical and thermocycling challenge on the microtensile bond strength of resin luting cements
- Creators
- Atais Bacchi - Universidade Estadual de Campinas (UNICAMP)Gabriel Abuna - Universidade Estadual de Campinas (UNICAMP)Rafael Leonardo Consani - Universidade Estadual de Campinas (UNICAMP)Mario Alexandre Sinhoreti - Universidade Estadual de Campinas (UNICAMP)Salvatore Sauro - Universidad Cardenal Herrera CEUVictor Pinheiro Feitosa - Universidade Federal do Ceará
- Resource Type
- Journal article
- Publication Details
- International journal of adhesion and adhesives, Vol.60, pp.69-74
- Publisher
- Elsevier
- DOI
- 10.1016/j.ijadhadh.2015.03.009
- ISSN
- 0143-7496
- eISSN
- 1879-0127
- Number of pages
- 6
- Language
- English
- Date published
- 07/01/2015
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984655342902771
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