Dental Factoid

The first toothbrush was invented in China in 1000 A.D. It was an ivory-handled toothbrush with bristles made from a horse's mane. Toothbrushes became popular in the 19th century among the Victorian affluent. Mass marketing and the advent of nylon bristles in the 20th century made toothbrushes inexpensive and available to everyone.
Links

American Dental Association
Academy of General Dentistry
American Association of Public Health Dentistry
Federation of Special Care Organizations in Dentistry
Centers for Disease Control/Oral Health Resources
Healthfinder.gov
KidsHealth
National Health Information Center