? We'd love to hear from you. Enter your comment below.  About David A. Hall  Dr. David Hall was one of the first 00 accredited cosmetic dentists in the world. He practiced cosmetic dentistry in Iowa, and in 0000 earned his accreditation with the American Academy of Cosmetic Dentistry. He is now president of Infinity Dental Web, a company in Mesa, Arizona that does complete Internet marketing for dentists.