Locating Isthmus Areas
Ultrasonics makes locating and cleaning Isthmus precise.
Failing to locate and treat canal anatomy can contribute to persistent infection and postoperative sequelae. Isthmuses are narrow anatomic areas that connect two root canals. Vital or necrotic pulp can remain in an isthmus if left untreated. Instrumentation of an isthmus with burs can result in excessive removal of tooth structure and iatrogenic ramifications. The concomitant use of ultrasonics and magnification facilitates precise and selective cleaning of isthmus areas.
1. Canals after instrumentation with files.
2. The ultrasonic insert must touch all isthmus walls.
3. Clean isthmus area.