The tooth fairy, movie-star smiles, toothy grins—teeth have carved out an enviable reputation for themselves, especially considering that their primary function is identical to that of the decidedly unglamorous wood chipper, meat mallet, and garbage disposal. And make no mistake: Teeth adore the limelight. They go to great lengths to bury their bad press—plaque, cavities, and the dreaded root canal, just for starters.