Root canal treatment may fail for reasons that are beyond the control of your dentist or endodontist. While the procedure does have a high success rate, there may be canals or branches within the tooth that are impossible to detect. The infection spreads to these areas, causing you to feel continued pain in the tooth. You have options when a root canal fails: tooth extraction, retreatment of the tooth, or apicoectomy. Dr. Weil and Dr. Koo perform apicoectomy at Piney Point Oral & Maxillofacial Surgery. Continue reading to learn more about the oral surgery in Houston.