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Shear bond strength of an orthodontic self‐etching adhesive after intracoronary bleaching
Author(s) -
Fernandes H. O.,
Santos L. B.,
Firoozmand L. M.
Publication year - 2015
Publication title -
orthodontics and craniofacial research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 55
eISSN - 1601-6343
pISSN - 1601-6335
DOI - 10.1111/ocr.12067
Subject(s) - adhesive , materials science , hydrogen peroxide , dentistry , bond strength , universal testing machine , composite material , enamel paint , chemistry , medicine , ultimate tensile strength , organic chemistry , layer (electronics)
Structured Abstract Objectives To evaluate the effects of intracoronary bleaching on the bond strength of orthodontic brackets using self‐etching and total‐etch adhesive systems. Material and Methods In 60 bovine incisors, a coronal lingual access was made to clean the pulp chamber and standardise the thickness of the dentine. The sample was randomly divided into four groups (each n = 15): ( CT ), control group, without bleaching and bonded with the total‐etch system (Transbond ™ XT ‐3M); ( CTSE ), without bleaching treatment and bonded with the self‐etching system (Transbond ™ Plus Self‐Etching Primer‐3M); ( BT ), treated with 35% hydrogen peroxide for internal bleaching and bonded with the total‐etch adhesive system; and ( BTSE ), treated with 35% hydrogen peroxide and bonded with the self‐etching adhesive system. Shear bond strength was measured using a universal testing machine ( EMIC ). The adhesive remnant index ( ARI ) score was verified. The data were analysed using a two‐way anova and Tukey test ( p < 0.05). Results Significant differences were found, and the self‐etching adhesive groups presented the highest bond strength values ( CTSE =11.55 ± 2.85 MP a; BTSE =14.14 ± 2.23 MP a). The ARI scores revealed significant differences among the groups; the greater amount of remaining adhesive was observed in the CTSE group, and the lowest scores were observed in the BT group. Conclusions The use of the self‐etching adhesive system, even after intracoronal bleaching, presented satisfactory adhesive strength for the bonding of brackets.