Hello, I have been to a dentist not area and have been told that I have a few cavities, nothing pressing. However, I have a horrible phobia of the conventional dental drill. I've recently heard of the Biolase Inc. Waterlase iPlus laser drill. People claim it is far less painful, though dental anesthetic isn't ruled out all together, is this claim it's more or less painless true? Does insurance cover it? Does it work well? Thanks!