Removal of metallic intraradicular retainer on biradicular tooth using sisu technique: case report

Resumo

The aim of this paper is to describe a clinical case using the Simultaneous Integrated Ultrasonic System (SISU) technique to remove metallic post and core in biradicular tooth. For successful prosthetic treatment, endodontic failure may require a new treatment and removal of post and core. The ideal technique for removing post and core is one that requires minimal removal of dental structure with low risk of fractures and perforations and should be simple and quick to perform. Various techniques for the removal of post and core are proposed, including the use of high-speed drills, ultrasonic vibration, traction or combined techniques, and their effectiveness is increased with magnification. Material and methods: The SISU technique, reported by Freire in 1995, deals with the simultaneous use of two ultrasonic devices applied in opposite directions over the core. Results: This protocol enhances energy transmission due to the juxtaposition of ultrasonic waves, which leads to rapid and efficient power line disruption. Conclusion: The use of the SISU technique to remove metallic retainers proved to be effective, as it allowed for minimal wear of the tooth structure and reduced clinical time.