These days, people in the media are expected to have brilliant white teeth.
Unfortunately it makes some viewers strive for unnaturally white teeth. While it is desirable to have your pearly whites, well, white – overdoing it can result in teeth sensitivity, gum irritation, and an increased porosity of the enamel. Having teeth bleached by a professional and over a longer period of time is the safest and more permanent way to whiter (and healthier!) teeth.
On to something lighter (no pun intended!), here’s a humorous article about anachronisms of the dental kind. Read here.