Dentist stories

It's likely that no person on this planet likes the high-pitched whine and buzzing of a dentist's drill as it roots around in your mouth. In fact, just thinking about it makes me cringe. Fortunately, a clever dentist realized the anxiety the sound caused, and hacked his own drill to play tunes from an MP3 player. That's a concept I can work with.
Dental visits are filled with that uneasy feeling until you hear whether you have a cavity. If you do have a cavity, that uneasy feeling is turned to dread. Would it make you feel better to learn that a new filling procedure could work to kill bacteria and even help regrowth in vulnerable area of the tooth?