TY - JOUR
T1 - Influence of air-abrasion executed with polyacrylic acid-Bioglass 45S5 on the bonding performance of a resin-modified glass ionomer cement
AU - Sauro, Salvatore
AU - Watson, Timothy F.
AU - Thompson, Ian
AU - Toledano, Manuel
AU - Nucci, Cesare
AU - Banerjee, Avijit
PY - 2012/4
Y1 - 2012/4
N2 - The aim of this study was to test the microtensile bond strength (lTBS), 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 airabrasion 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 lTBS 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 (a = 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 airabraded with BAG/H2O only or with BAG/PAA-fluid followed by etching procedures (10% PAA gel) showed no statistically significant reduction in lTBS 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.
AB - The aim of this study was to test the microtensile bond strength (lTBS), 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 airabrasion 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 lTBS 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 (a = 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 airabraded with BAG/H2O only or with BAG/PAA-fluid followed by etching procedures (10% PAA gel) showed no statistically significant reduction in lTBS 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.
U2 - 10.1111/j.1600-0722.2012.00939.x
DO - 10.1111/j.1600-0722.2012.00939.x
M3 - Article
VL - 120
SP - 168
EP - 177
JO - European Journal of Oral Sciences
JF - European Journal of Oral Sciences
IS - 2
ER -