Dr, Mark Alder has been serving local Beaverton families since 1980. Dentistry is the branch of medicine that is involved in the diagnosis, prevention, and treatment of diseases, disorders and conditions of the oral cavity, the maxillofacial area and the adjacent and associated structures, and their impact on the human body. Dentistry tends to be perceived as being focused primarily on human teeth, though it is not limited strictly to this. Dentistry is widely considered necessary for complete overall health. Doctors who practice dentistry are known as dentists. The dentist's supporting team ? which includes dental assistants, dental hygienists, dental technicians, and dental therapists ? aids in providing oral health services.