A irrigação ultrassônica passiva na desinfecção dos canais radiculares : revisão de literatura.

Abstract

The anatomical complexity of the root canal system can interfere with endodontic success when complete removal of microorganisms (MO) does not occur. For this reason, an effective action of irrigating substances must occur during the treatment. Different final irrigation activation protocols seek to optimize the action of irrigating substances throughout the pulp cavity. The present study aimed to review the literature looking for scientific evidence on passive ultrasonic irrigation (PUI), evaluating its potential in increasing root canal disinfection. PUI should be instituted when the chemical-surgical preparation is completed or with good expansion and the technique is considered to enhance the irrigating solution, due to its micro flow and hydrodynamic cavitation properties, helping to remove the dentin mud impregnated in the canal walls and obliterating their tubules. The use of the PUI technique has shown an improvement in the cleaning and disinfection of the root canal system. And, its cost-benefit points to the need to establish ideal protocols involving the proposition of irrigators (types and quantities) and their due activation times.