Effect of dentine conditioning on adhesion of resin‐modified glass ionomer adhesives. (June 2014)

• Record Type: Journal Article
• Authors: Hamama, HH; Burrow, MF; Yiu, C
• Is Part Of: Australian dental journal. Volume 59:Number 2(2014:Jun.)
• Page Start: 193
• Page End: 200
• Publication Date: 2014-06
• Subjects: Dentistry -- Periodicals; Dentistry -- Periodicals; Dentisterie -- Australie -- Périodiques; Tandheelkunde; 617.6
• DOI: 10.1111/adj.12169
• Languages: English
• ISSNs: 0045-0421

Abstract

<abstract abstract-type="main" id="adj12169-abs-0001"> <title>Abstract</title> <sec id="adj12169-sec-0001" sec-type="section"> <title>Background</title> <p>The aim of this study was to investigate the use of phosphoric acid as a surface treatment compared to traditional conditioning agents to dentine bonded with resin‐modified glass ionomer (RMGIC) adhesives.</p> </sec> <sec id="adj12169-sec-0002" sec-type="section"> <title>Methods</title> <p>Forty human molars were utilized in microtensile bond strength testing, while another 16 were used for evaluation of the bonded interface with scanning electron microscopy. Three RMGIC adhesives were evaluated: Fuji Bond LC (GC Corp); Riva Bond LC (SDI Ltd); and Ketac N100 (3M‐ESPE). Surface treatments were 37% phosphoric acid (5 s) or 25–30% polyacrylic acid (PAA) (10 s), or the manufacturer's method – Fuji Bond LC: Cavity Conditioner (20% PAA + 3% AlCl<sub>3</sub> 10 s) or Ketac N100 primer: Ketac Nano priming agent (15 s). Teeth were finished with 600‐grit SiC paper, surfaces treated and bonded with RMGIC adhesive and stored in distilled water for 24 h then subjected to microtensile bond strength testing.</p> </sec> <sec id="adj12169-sec-0003" sec-type="section"> <title>Results</title> <p>Two‐way analysis of variance (ANOVA) revealed adhesion was affected by the 'type of RMGIC adhesive' and 'method of dentine surface treatment' (p < 0.05). The microtensile bond strength of Ketac N100 primer groups was lower than Fuji Bond LC and Riva Bond LC (p < 0.05).</p> </sec> <sec id="adj12169-sec-0004" sec-type="section"> <title>Conclusions</title> <p>For RMGIC adhesives a brief etch with phosphoric acid does not adversely effect short‐term bond strengths, but is no better than traditional conditioning with PAA.</p> </sec> </abstract>