Irrigação ultrassônica passiva no sistema de canais radiculares: revisão de literatura

Abstract

Endodontic treatment is aimed at disinfection, shaping and filling of root canals in order to bring a favorable prognosis, however, the anatomical complexity of the Root Canal System (RCS) promotes difficulty in reducing microorganisms in regions with difficult access. Thus, techniques that aim to increase the disinfection capacity of the RCS have been sought, such as Passive Ultrasonic Irrigation (PUI). Therefore, this literature review aims to describe passive ultrasonic irrigation (PUI), pointing out the benefits and the protocol used. For this purpose, searches were carried out for studies published on the same topic and indexed in the databases, from sources published in the virtual libraries BVS, Medline, Academic Google, Scielo and Pubmed with the following keywords: “Endodontics”, “Ultrasound ” and “Root Canal Irrigants”. In PUI, ultrasonic vibration activates the irrigating solution through thin and smooth files or inserts, which minimally touch the dentin walls, enhancing the irrigating solution due to the properties of hydrodynamic cavitation and microflow, helping to remove the smear layer present in the inner walls of the root canal, bringing benefits to the SCR in the prevention or control of endodontic infection.