IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-7-35870 Original Research Paper COMPARITIVE STUDY OF SHEAR BOND STRENGTH WITH ACIDULATED PHOSPHATE FLUORIDE APPLIED BEFORE AND AFTER ACID ETCHING IN ORTHODONTIC BONDING PROCEDURE G.VISWANATHAN Dr. July 2021 10 7 01 02