BEST DENTAL CLINIC IN ANNA NAGAR! The Hall Technique cost a third less than traditional treatment and could be completed in eight minutes rather than 45 minutes. Plus, there were other advantages: 97% success rate after two years No anaesthesia or drilling required. Avoided weakening tooth structure. Reduced errors and mistakes. Improved patient experience. However, there was one downside. While the children receiving the caps were much happier, siblings who didn’t require treatment became jealous of their brother or sister who did!