[if gte IE 8][endif] Most of us over the age of 18 have heard it at some point – VZZZZZZZZZ! The whine of the dental drill revving up just before going to work on our favourite molar. It’s at that moment when we inevitably think “why didn’t I just brush for a full 2 minutes twice a day like I was told to when I was here last year?” Of course we know the reasons why. We had other priorities. We thought we could make up for it by doing a really good job brushing the next d