INFLUENCE OF BLEACHING AND REMINERALIZING AGENTS ON SHEAR BOND STRENGTH OF CERAMICS: AN IN VITRO STUDY

Ananya Maity; Shashi Rashmi Acharya

Volume : VI, Issue : III, March - 2017

INFLUENCE OF BLEACHING AND REMINERALIZING AGENTS ON SHEAR BOND STRENGTH OF CERAMICS: AN IN VITRO STUDY

Ananya Maity, Shashi Rashmi Acharya

Abstract :

Bleaching of teeth is recommended as a treatment option to reduce the intensity of discolouration before bonding thin laminates. Bleaching affects adhesion owing to inorganic & organic changes in teeth. Thus, aim of the study was to evaluate and compare the effect of 5% & 40% calcium sucrose phosphate(CaSP) remineralizing agents after bleaching on enamel with 35% Hydrogen Peroxide(H2O2) and its influence on shear bond strength of ceramics. 40 maxillary incisors were divided as: GroupA: control, GroupB: 35% H2O2 and 5% CaSP, GroupC: 35% H2O2 and 40% CaSP, GroupD: only 35% H2O2. Ceramic discs were faicated and luted with dual cure resin cement. Shear bond strength was evaluated with universal testing machine. Increase in mean values showed no statistically significant difference between GroupB & GroupC. Hence, we can conclude that higher concentration of CaSP before cementation of laminates to bleached enamel may be a better option.