M.B.B.S (Dhaka), B.D.S (Punjab), F.I.C.D (U.S.A), M.F.D.I (U.K), Fellow of W.H.O Member of British Association of Oral and Maxillo-facial Surgeons, Ex. Professor and Head of the Department of Dentistry I.P.G.M & R, Dhaka, Ex. Principal, City Dental College, Dhaka, Bangladesh, Professor Meritorious and Head of the Department of Dental Biomaterials, City Dental College, Dhaka, Bangladesh