Laser-activated irrigation of dental root canals has gained popularity recently due to its improved antibacterial effect and its ability to effectively irrigate complex root canal morphology compared to traditional methods.

SWEEPS -Shock Wave Enhanced Emission Photoacoustic Streaming is an attempt to improve the efficacy of laser assisted endodontic procedures for disinfecting and activating the complex root canal system. This modality enablesthe creation of primary and secondary shock waves. SWEEPS is based on the transmission of shorter double pulses. Owing to the shorter pulse duration, the peak power of each SWEEPS pulse is doubled at the same energy, resulting in a stronger bubble explosion and implosion unlike PIPS mode with single pulse energy emission. Emission of a couple of consecutive laser pulses, with the second subsequent laser pulse that shoots into the liquid at an optimal delay time from the first pulse, when the initial bubble is in the final phase of its collapse. This phenomenon produces an acceleration of the laser- induced bubbles collapse, leading to the emission of shock waves also in narrowroot canals.