Some of you may feel anxious about root canal treatment, but Dr Stefan and Dr David are here to ensure anxious patients that root canal treatment does not cause pain - it treats it! Dr David has a special interest in endodontics and is furthering his post-graduate training in this area. During root canal or endodontic treatment, the inflamed or infected pulp is removed and the inside of the tooth is carefully cleaned and disinfected, then filled and sealed with a rubber-like material called gutta-percha.