1Professor, Department of Conservative Dentistry & Endodontics, K.M shah dental college and hospital, Pipariya, Vadodra
2Post Graduate Student, Department of Conservative Dentistry & Endodontics, K.M shah dental college and hospital, Pipariya, Vadodra
3Professor & H.O.D, Department of Conservative Dentistry & Endodontics, K.M shah dental college and hospital, Pipariya, Vadodra
4Reader, Department of Conservative Dentistry & Endodontics, K.M shah dental college and hospital, Pipariya, Vadodra
*ADDRESS FOR CORRESPONDENCE: Dr. Neha Ramdev Purohit Post graduate student Department of Conservative dentistry & Endodontics K. M shah dental college and hospital, pipariya Cell: +91-9727767221; Email: neha25ramdev@gmail.com
Online published on 23 April, 2014.
AIM: The aim of the study was to evaluate the effect of different formulations and application times of Chlorhexidine on shear bond strength of Silorane based adhesive systems.
MATERIAL AND METHODS: Thirty five freshly extracted mandibular molars were sectioned with a lowspeed diamond discunder water coolant to expose mid-coronal dentin. The roots were embedded in cylindrical shape auto polymerizing acrylic resin in such a way that the flat dentine surfaces will remain exposed. The specimens were divided in three groups. Group I Control group(no disinfectant was applied) consisted of 5 samples and Group II (2% CHX solution) and Group III(1% CHX gel) consisted of 15 samples each. After disinfection for a time periods (15, 30 and 60 seconds respectively with both CHX gel and solution), Silorane self etch adhesive system (Filtek-3M ESPE) was used and composite was packed incrementally in the cylindrical shape Teflon molds and composite cylinders were built. Shear bond strength was measured in Newton‘s and data was subjected to ANOVA, POST HOC and Paired t test.
RESULTS: concluded were disinfection for longer time did not improve bond strength significantly. Only 15 second disinfection showed significantly higher bond strength (P= 0.000). When formulations were compared, the gel form of CHX showed better bond strength than liquid formulation in all time periods.
CONCLUSION: The findings of this study suggest that1%CHX gel for 15 seconds is the most suitable regimen for cavity disinfection.
Shear bond strength, Silorane adhesive system, Disinfection, CHXgel, CHXsolution
