Fatemeh Kebriai, Hajar Attarzadeh, Abd Rahim Davari , Safiyeh Mardanpour,
Volume 2, Issue 1 (1-2014)
Abstract
Introduction: casein phosphopeptide–amorphous calcium phosphate (CPP-ACP) application decreases the risk of dental carries besides other prophylactic methods such as fluoride therapy and fissure sealant. The aim of this study was to compare the effect of CPP-ACP on Microtensile bond strength of fissure sealant compared with fluoride.
Materials and Methods: This experimental study was done on 12 extracted third molars in two groups. In group 1 (control), enamel was pretreated with 1.23% APF for 4 minutes and in group 2 CPP-ACP for 3 minutes was applied. Enamel was etched by 37% phosphoric acid for 30 minutes. Then Single Bond 2 was applied according to the manufacturer’s instructions and Clinpro fissure sealant was placed. Then, by serially cutting tooth, multiple dumbbell-shaped specimens (1mm2) were obtained, and were loaded in tensile (1 mm/min) by Microtensile Test MTD-500 plus device. The study data were analyzed using Shapiro-Wilks،T-test and Fisher Exact-Test by statistical software SPSS ( version 17).
Result: Mean of µTBS in group 1 and 2 were 19/54 ± 3/06 and 27/20 ± 5/53 MPa, respectively. The bond strength of group 2 was statistically greater than group 1 (P-value = 0/001). Most of failures were cohesive and there were no significant differences among groups in mode of failure (P-value = 0/266).
Conclusion: GC tooth mousse application made higher Microtensile bond strength of fissure sealant in comparison with APF 1/23%. So CPP-ACP may safely be used before pit and fissure sealants.
