TODENTJ-25-03-2019_TODENTJ-10-268 1553506506 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 06 06 2016 10 1 Fernanda Borguetti Manfroi Maurem Leitão Marcondes Deise Caren Somacal Gilberto Antonio Borges Luiz Henrique Burnett Júnior Ana Maria Spohr Objective: The aim of the study was to evaluate the microtensile bond strength (µTBS) of Scotchbond Universal to dentin using the etch-and-rinse or the self-etch technique after 24 h and 6 months of storage. Materials and Methods: Flat dentin surfaces were obtained in 24 third molars. The teeth were divided into four groups: G1 – Scotchbond Universal applied in the etch-and-rinse mode; G2 – Scotchbond Universal applied in the self-etch mode; G3 – Scotchbond Multi-Purpose; G4 – Clearfil SE Bond. A block of composite was built on the adhesive area. The tooth/resin sets were cut parallel to the long axis to obtain 40 beams (~0.8 mm2) for each group. Twenty specimens were immediately submitted to the µTBS test, and the remaining 20 were stored in water for 6 months. Failures and the adhesive interface were analyzed by SEM. Results: According to two-way ANOVA, the interaction between adhesive and storage time was significant (p=0.015).The µTBS (MPa) means were the following: 24 h – G1 (39.37±10.82), G2 (31.02±13.76), G3 (35.09±14.03) and G4 (35.84±11.06); 6 months – G1 (36.99±8.78), G2 (40.58±8.07), G3 (32.44±6.07) and G4 (41.75±8.25). Most failures were mixed. Evidence of hybrid layer and numerous resin tags were noted for Scotchbond Universal applied with the etch-and-rinse mode and Scotchbond Multi-Purpose. A thinner hybrid layer and fewer resin tags were noted for Scotchbond Universal applied in the self-etch mode and Clearfil SE Bond. Conclusion: The results indicate that the µTBS for Scotchbond Universal is comparable to the gold-standard adhesives. Scotchbond Universal applied in the self-etch mode and Clearfil SE Bond revealed higher bond stability compared to the etch-and-rinse mode. 06 06 2016 268 277 TODENTJ-10-268 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2015-2-1 2016-5-1 2016-5-2 2016-06-06 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1874210601610010268 1553506506 https://opendentistryjournal.com/VOLUME/10/PAGE/268/ https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-268/TODENTJ-10-268.xml Oper. 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