Evaluation of Fluoride Release and Shear Bond Strength of A New ‘Light Cure’ Adhesive Material: An In vitro Study

The purpose of this study was to measure the shear bond strength and test the efficacy of Beautifil Flow Plus® in releasing fluoride ions in saliva. 60 extracted human premolars, free of cracks, caries and restorations were selected. They were divided into four groups on the basis of different enamel surface preparations. All teeth were bonded with Beautifil Flow Plus® using self etching primer (SEP). Group 1: No mechanical or chemical enamel surface preparation was done before bonding (P-/E-). Group 2: Teeth were pre-etched directly for 5 seconds and then bonded (P-/E+). Group 3: Teeth were pumiced for 10 seconds but not pre-etched (P+/E-). Group 4: Teeth were pumiced for 10 seconds and pre-etched with 37% phosphoric acid for 5 sec (P+/E+). Specimens were then placed in artificial saliva for 22 days. Analysis of fluoride release using Ion Analyser showed that beautifil flow plus has the potential of releasing fluoride. Shear bond strength was found to be highest in group 2 and lowest in group 3. ANOVA test showed that there was significant difference between the groups tested. Post-hoc Bon ferroni multiple comparison tests for shear bond strength of Beautifil Flow Plus showed significant differences between the four groups. Beautifil flow plus is an efficient adhesive for orthodontic bonding based on its shear bond strength and its fluoride release potential.