Home > Dental > Tooth Decay Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Jun 22, 2008 by LZoitopoulos, Views: 8186 Dr. Liana Zoitopoulos discusses tooth decay. When sugar enters the mouth it is broken down into acid. Eventually you will get a tooth abscess. This sometimes requires root canal, or a tooth extraction.