Dental care is separated from medical care as if teeth aren't part of the body

In the United States, dental insurance is sold, regulated, and administered as a completely separate product from medical insurance. Your mouth is carved out of your body for coverage purposes. If you have an infection in your arm, your medical plan covers it. If you have an infection in your jaw, you need a different insurance card, a different provider network, a different deductible, and a different claims system. This artificial separation causes direct patient harm. Periodontal disease is strongly linked to cardiovascular disease, diabetes complications, and adverse pregnancy outcomes. But the dentist and the physician operate in siloed systems with no shared records, no coordinated treatment plans, and no unified coverage. A diabetic patient whose oral health deteriorates may end up hospitalized for uncontrolled blood sugar, costing the medical system tens of thousands of dollars that a $200 dental cleaning could have prevented. The separation persists because of historical accident and entrenched industry structure. Dentistry developed as a separate profession from medicine in the 19th century, with its own schools, licensure, and trade associations. When employer-sponsored health insurance expanded in the mid-20th century, dental coverage was bolted on as a separate rider. Today, medical insurers, dental insurers, the ADA, and the AMA all have institutional incentives to maintain their separate domains. Legislative attempts to integrate dental into medical coverage face opposition from every established player.