Efficacy of the HBW Ultrasonic Ring for retrieval of fragmented manual or rotatory instruments

J Oral Sci. 2023 Aug 10. doi: 10.2334/josnusd.23-0031. Online ahead of print.ABSTRACTA study was conducted to evaluate the success rates of bypassing or removing fragments of instruments that had fractured within the roots of mandibular molars using a HBW Ultrasonic Ring. Forty extracted first permanent mandibular molars with root canal curvature were included. The teeth were distributed randomly into four groups according to the type of instrument and the root canal third where they had fractured. The success rate for removal of instrument fragments was 100% for both of two stainless steel groups, 90% for a nitinol middle third group, and 80% for a nitinol apical third group. The mean time required for instrument removal was around 40 min. The HBW Ultrasonic Ring showed acceptable experimental results for retrieval of broken instrument fragments.PMID:37558435 | DOI:10.2334/josnusd.23-0031

Source: Journal of oral science - August 9, 2023 Category: Dentistry Authors: Jennifer Galv án-Pacheco Ver ónica Méndez-González Ana Gonz ález-Amaro Heriberto Bujanda-Wong Amaury Pozos-Guill én Arturo Garrocho-Rangel Source Type: research