Bonding of simplified adhesive systems to caries-affected dentin of primary teeth.

Teixeira Alves, Fabiana Bucholdz; Lenzi, Tathiane Larissa; Reis, Alessandra; Loguercio, Alessandro D.; Saads Carvalho, Thiago; Raggio, Daniela Prócida (2013). Bonding of simplified adhesive systems to caries-affected dentin of primary teeth. Journal of adhesive dentistry, 15(5), pp. 439-445. Quintessence Publ. 10.3290/j.jad.a28880

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PURPOSE To evaluate the bonding of simplified adhesive systems to sound and caries-affected dentin of primary teeth with microtensile (µTBS) 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 mm2 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 nano leakage with SEM. The fracture pattern was evaluated using a stereomicroscope (400X). The µTBS means were analyzed by two-way ANOVA and Tukey's post-hoc test. For NL, the Kruskal- Wallis and Mann-Whitney tests were used (α < 0.05). RESULTS SB (35.5 ± 3.5) showed the highest µTBS 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 nano leakage was more pronounced than in the other adhesive systems, even in sound dentin. CONCLUSION Caries-affected dentin negatively influences the bond strength and nano leakage of the two-step etch-and-rinse and one-step self-etching adhesive systems tested in primary teeth.

Item Type:

Journal Article (Original Article)

Division/Institute:

?? DCD5A442C272E17DE0405C82790C4DE2 ??
04 Faculty of Medicine > School of Dental Medicine
04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry

UniBE Contributor:

Saads Carvalho, Thiago

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1461-5185

Publisher:

Quintessence Publ.

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

01 May 2014 09:18

Last Modified:

25 Jan 2017 12:15

Publisher DOI:

10.3290/j.jad.a28880

PubMed ID:

23534022

Uncontrolled Keywords:

microtensile, bond strength, caries-affected dentin, nanoleakage, primary teeth

BORIS DOI:

10.7892/boris.45772

URI:

https://boris.unibe.ch/id/eprint/45772

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