Dentistry: Tougher Teeth Coming

After gazing into many a U.S. mouth, the American Dental Association estimates that the country is afflicted with one billion unfilled cavities, five per head. It adds that 26 million Americans have lost all their teeth, while 80% of those over the age of 15 have some form of periodontal disease attacking the tissues that support the teeth. Worse, dental problems are proliferating faster than dentists can treat them.

Obviously, the American mouth is a disaster area. Dentists are quick to blame public indifference, and with some reason. If Americans used toothbrushes...

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