Shear bond strength of an orthodontic self‐etching adhesive after intracoronary bleaching. (20th January 2015)

• Record Type: Journal Article
• Authors: Fernandes, H. O.; Santos, L. B.; Firoozmand, L. M.
• Is Part Of: Orthodontics and craniofacial research. Volume 18:Number 2(2015:May)
• Page Start: 117
• Page End: 124
• Publication Date: 2015-01-20
• Subjects: Skull -- Growth -- Periodicals; Facial bones -- Growth -- Periodicals; Orthodontics -- Periodicals; Orthodontics, Corrective -- Periodicals; Orthodontic appliances -- Periodicals; 617.51
• DOI: 10.1111/ocr.12067
• Languages: English
• ISSNs: 1601-6335

Abstract

<abstract abstract-type="main" id="ocr12067-abs-0001"> <title>Structured Abstract</title> <sec id="ocr12067-sec-0001" sec-type="section"> <title>Objectives</title> <p>To evaluate the effects of intracoronary bleaching on the bond strength of orthodontic brackets using self‐etching and total‐etch adhesive systems.</p> </sec> <sec id="ocr12067-sec-0002" sec-type="section"> <title>Material and Methods</title> <p>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 <italic>n</italic> = 15): (CT), control group, without bleaching and bonded with the total‐etch system (Transbond<sup>™</sup> XT‐3M); (CTSE), without bleaching treatment and bonded with the self‐etching system (Transbond<sup>™</sup> 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 <sc>anova</sc> and Tukey test (<italic>p</italic> < 0.05).</p> </sec> <sec id="ocr12067-sec-0003" sec-type="section"> <title>Results</title> <p>Significant differences were found, and the self‐etching adhesive groups presented the highest bond strength values (CTSE=11.55 ± 2.85 MPa; BTSE=14.14 ± 2.23 MPa). 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.</p> </sec> <sec id="ocr12067-sec-0004" sec-type="section"> <title>Conclusions</title> <p>The use of the self‐etching adhesive system, even after intracoronal bleaching, presented satisfactory adhesive strength for the bonding of brackets.</p> </sec> </abstract>