Dr. ABU-HUSSIN M. has given courses and conferences in Spain, Portugal, France, Italy, Egypt, Germany, Croatia, Serbia, Azerbaijan, Hungary, Ireland, Russia, China, England, Austria, Israel, Romania, Mexico,  Brasil, India, Turkey, Dubai(U.A.E.), and USA, and has received awards for his work in International Conferences.   He has been involved in several research programs and has more than 375 publications in Greek and International Dental Journals and has co-authored a textbook for dental treatment of cancer patients.  He has received several awards from the International Association of Pediatric Dentistry, including the Beng Magnuson Award for best research paper and two Bright Smile Bright Future Awards. He has lectured as an invited speaker and participated in more than 280 oral presentations in Greek and International Meetings and has taught in many continuous education courses.  He is a member of various International Scientific Societies and Associations