Home Â» Discover and Learn Â» Noah Webster History Â» Noah Webster's Story. The Noah Webster House in West Hartford is the birthplace of one of the most unappreciated men in American history. Our great military heroes and statesmen we remember.
Toothbrush Care: Cleaning, Storing and Replacement. Toothbrushing plays an important everyday role for personal oral hygiene and effective plaque removal. Appropriate toothbrush care and maintenance are also important considerations for sound oral hygiene. The ADA recommends that consumers replace toothbrushes approximately every 3â4 months or sooner if the bristles become frayed with use.
A tongue cleaner on a toothbrush was patented in 1984. The electric toothbrush was patented in 1996. Removable toothbrush head was patented in 1997 Patents Over the years, engineers have created many new, creative ideas to enhance the toothbrush. Here are a few patent products of the toothbrush.