For overseas dentists, 1.Why ADA can not set up National Boards testing center out of USA, when similar centers are established for similiar exams like USMLE, TOEFL, GRE, GMAT etc around the world? NBD exams are REQUIRED by all programs of International Dentistry(DDS). Every year hundereds of applicants came to USA only to appear in one day exam, spending thousands & travelling long distances. 2.When Medical Doctors can practice/license in USA after passing a series of exams, why not Dentists, even Dentistry is a limited science as compare to Medicine????