Many tea drinkers know about tannins, those pesky molecules that stain teeth and ceramic mugs. Last year, John L. Lombardi, a green tea drinker, learned that makers of hard-disk drives were thirsting ...

Tooth polishing is a dental procedure, which is used for the prevention of teeth problems. It also makes teeth appear whiter, stain-free, and glistening. This procedure improves dental health and ...