Dentine bond of light-activated glass-ionomer liner/bases.
This in vitro study comparatively assessed the magnitude and durability of the bonds to dentine of three glass-ionomer liner/bases, BaseLine VLC, Vitrebond and XR Ionomer. Shear bond strengths to human dentine were measured after 24 h. storage in water at 37 degrees C and after 5,000 continuous thermocycles between 5 degrees C and 55 degrees C. The BaseLine VLC material failed to achieve any measurable bond. The mean bond strength values of Vitrebond after 24 h. storage in water at 37 degrees C and after thermocycling were significantly higher (p < 0.05) than those of XR Ionomer. Both Vitrebond and XR Ionomer exhibited a drop in their bond strengths after thermocycling but this was statistically significant only in the case of XR Ionomer. These findings indicate that Vitrebond exhibits a more reliable bond to dentine compared to those of BaseLine VLC and XR Ionomer.
Aboush
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Department of Conservative Dentistry, Bristol Dental Hospital and School, United Kingdom.
D001840:Dental Bonding; D003736:Dental Cavity Lining; D003799:Dental Stress Analysis; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D006801:Humans; D008027:Light; D008422:Materials Testing; D008689:Methacrylates; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes
D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D008689:Methacrylates; D011140:Polyurethanes; C074807:BaseLine dental cement; C067790:Vitrabond; C070604:XR Bond