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Influence of air‐abrasion executed with polyacrylic acid‐Bioglass 45S5 on the bonding performance of a resin‐modified glass ionomer cement
Author(s) -
Sauro Salvatore,
Watson Timothy F.,
Thompson Ian,
Toledano Manuel,
Nucci Cesare,
Banerjee Avijit
Publication year - 2012
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.2012.00939.x
Subject(s) - polyacrylic acid , glass ionomer cement , materials science , acrylic resin , composite material , bond strength , cement , dentistry , adhesive , layer (electronics) , polymer , coating , medicine
Sauro S, Watson TF, Thompson I, Toledano M, Nucci C, Banerjee A. Influence of air‐abrasion executed with polyacrylic acid‐Bioglass 45S5 on the bonding performance of a resin‐modified glass ionomer cement.
Eur J Oral Sci 2012; 120: 168–177. © 2012 Eur J Oral Sci The aim of this study was to test the microtensile bond strength (μTBS), after 6 months of storage in PBS, of a resin‐modified glass ionomer cement (RMGIC) bonded to dentine pretreated with Bioglass 45S5 (BAG) using various etching and air‐abrasion techniques. The RMGIC (GC Fuji II LC) was applied onto differently treated dentine surfaces followed by light curing for 30s. The specimens were cut into matchsticks with cross‐sectional areas of 0.9 mm 2 . The μTBS of the specimens was measured after 24 h or 6 months of storage in PBS and the results were statistically analysed using two‐way anova and the Student–Newman–Keuls test (α = 0.05). Further RMCGIC‐bonded dentine specimens were used for interfacial characterization, micropermeability, and nanoleakage analyses by confocal microscopy. The RMGIC–dentine interface layer showed no water absorption after 6 months of storage in PBS except for the interdiffusion layer of the silicon carbide (SiC)‐abraded/polyacrylic acid (PAA)‐etched bonded dentine. The RMGIC applied onto dentine air‐abraded with BAG/H 2 O only or with BAG/PAA‐fluid followed by etching procedures (10% PAA gel) showed no statistically significant reduction in μTBS after 6 months of storage in PBS. The abrasion procedures performed using BAG in combination with PAA might be a suitable strategy to enhance the bonding durability and the healing ability of RMGIC bonded to dentine.