What the Tooth Fairy Forgot: Dentists for Rural America
Article on severe shortage of dentists in rural America, in places like Gregory, South Dakota, where Dr Donald E Nemer, 70, would like to retire but cannot find anyone to take over his thriving practice; photo; map; South Dakota has one dentist for every 2,359 people, compared with one per 1,714 people nationally, and one for every 1,254 in New York State; Nemer himself has 4,000-5,000 active patients; US has 166,383 dentists, up from 150,762 in 1991, but there are critical shortages in Plains, Northern New England and fast-growing suburbs of Southwest (M)