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      Influence of saliva contamination on the shear bond strength of adhesives on enamel

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          Abstract

          OBJECTIVE: To evaluate shear bond strength of 3 adhesive systems (Single Bond, TransbondTM MIP and TransbondTM XT) applied on bovine enamel under saliva contamination condition. METHOD: One hundred and twenty enamel surfaces of bovine incisors were divided into 6 groups (n = 20) according to the adhesive system used (TransbondTM XT, TransbondTM MIP and Single Bond) with or without saliva contamination. For each adhesive system, there were two groups defined as no contamination group (NC): 37% H3PO4 conditioning for 30 seconds and two layers of adhesive systems; saliva contamination group (SC): After the first adhesive layer application, the examined areas were contaminated with saliva. Samples were mounted appropriately for testing and stored in deionized water at 37 ºC for 7 days. Samples were then submitted to shear bond strength trials at a speed of 0.5 mm/min. The Adhesive Remnant Index (ARI) was evaluated under stereomicroscopy. Two-way analysis of variance and the Tukey test were used to compare mean values (α = 0.05). RESULTS: Groups XT (NC) = 26.29 ± 7.23; MIP (NC) = 24.47 ± 7.52 and SB (NC) = 32.36 ± 4.14 XT (SC) = 19.59 ± 6.76; MIP (SC) = 18.08 ± 6.39 and SB (SC) = 18.18 ± 7.03 MPa. ARI 0 and 1 were the most prevalent scores in all study groups examined. CONCLUSION: Saliva contamination significantly decreased bond strength of the three adhesive systems examined (p <0.05). However, the comparison of groups with and without saliva contamination did not reveal any significant differences, and, therefore, the three systems may be considered equivalent.

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          Most cited references 17

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          A Review of Direct Orthodontic Bonding

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            Bovine teeth as possible substitutes in adhesion test

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              The effect of saliva on shear bond strengths of hydrophilic bonding systems

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                dpjo
                Dental Press Journal of Orthodontics
                Dental Press J. Orthod.
                Dental Press International (Maringá )
                2177-6709
                April 2012
                : 17
                : 2
                : 30.e1-30.e6
                Affiliations
                [1 ] Universidade Federal Fluminense Brazil
                [2 ] Universidade Federal Fluminense Brazil
                [3 ] Universidade Federal Fluminense Brazil
                S2176-94512012000200005
                10.1590/S2176-94512012000200005

                http://creativecommons.org/licenses/by/4.0/

                Product
                Product Information: SciELO Brazil
                Categories
                DENTISTRY, ORAL SURGERY & MEDICINE

                Dentistry

                Shear bond strength, Saliva contamination, Enamel bonding

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