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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bonding of Simplified Adhesive Systems to Caries-affected Dentin of Primary Teeth

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Teixeira Alves, Fabiana Bucholdz [1] ; Lenzi, Tathiane Larissa [2] ; Reis, Alessandra [3] ; Loguercio, Alessandro D. [3] ; Carvalho, Thiago Saads [2] ; Raggio, Daniela Procida [2]
Total Authors: 6
[1] Univ Estadual Ponta Grossa, Dept Pediat Dent, Ponta Grossa - Brazil
[2] Univ Sao Paulo, Dept Pediat Dent, Sch Dent, BR-05508000 Sao Paulo - Brazil
[3] Univ Estadual Ponta Grossa, Dept Restorat Dent, Sch Dent, Ponta Grossa - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Adhesive Dentistry; v. 15, n. 5, p. 439-445, 2013.
Web of Science Citations: 12

Purpose: To evaluate the bonding of simplified adhesive systems to sound and caries-affected dentin of primary teeth with microtensile (mu TBS) and nanoleakage (NL) tests. Materials and Methods: Occlusal cavities were prepared in 36 sound second primary molars. Half of the specimens were submitted to pH cycling to simulate caries-affected dentin. Teeth were randomly restored with one of three materials: the etch-and-rinse adhesive system Adper Single Bond 2 (SB), the two-step self-etching adhesive system Adper SE Plus (SE), and the one-step self-etching adhesive system Adper Easy One (EASY). After storage for 24 h, specimens with cross-sectional areas of 0.8 mm(2) were prepared for microtensile testing (1 mm/min). One stick from each tooth was immersed in silver nitrate solution (24 h) and allowed to develop for 8 h in order to score the nanoleakage with SEM. The fracture pattern was evaluated using a stereomicroscope (400X). The mu TBS means were analyzed by two-way ANOVA and Tukey's post-hoc test. For NL, the Kruskal-Wallis and Mann-Whitney tests were used (alpha < 0.05). Results: SB (35.5 +/- 3.5) showed the highest mu TBS value to sound dentin, followed by EASY (26.3 +/- 1.9) and SE (18.2 +/- 6.5) (p < 0.05). No difference among materials was observed for caries-affected dentin (SB: 17.8 +/- 4.2; SE: 13.9 +/- 3.2; EASY: 14.4 +/- 4.2, p > 0.05). For all groups, adhesive/mixed fracture prevailed. Caries-affected dentin promoted silver nitrate uptake into the adhesive interface; however, with SE, the nanoleakage was more pronounced than in the other adhesive systems, even in sound dentin. Conclusion: Caries-affected dentin negatively influences the bond strength and nanoleakage of the two-step etch-and-rinse and one-step self-etching adhesive systems tested in primary teeth. (AU)

FAPESP's process: 09/16597-0 - Substrate condition and application protocol effect of adhesive systems in primary dentin bond strength
Grantee:Tathiane Larissa Lenzi
Support Opportunities: Scholarships in Brazil - Doctorate