Root canal therapy is considered the standard of care by the American Dental Association. Emerging science, however, is demonstrating that no matter how well the procedure is performed, 100% sterilization is rarely, if at all, achieved. Each tooth has one to four main canals where a blood vessel and nerve bundle resides. When this living tissue undergoes infection or necrosis, a root canal therapy is usually a treatment of choice. During this therapy the clinician will remove