根管清理是根管治疗术成败的关键之一,这已是众所周知的事实。由于根管系解剖形态复杂多变,且多不规则,目前常规清理法都不能达到彻底清除根管内坏死组织、碎屑及细菌等的目的。笠井、长田(1975)和Martin(1976)提出一种新的根管清理法——根管超声清理法,企图取代手持法清理和冲洗根管。近十年来,已有数种牌号的根管超声冲洗装置(根管超声协同系统Endodontic ultrasonic synergistic system)相继问世,并有一系列实验研究和部 Root canal cleaning is one of the keys to the success or failure of root canal therapy, which is a well-known fact. Due to the complex and changeable anatomy of the root canal system and irregularities, the current routine cleaning methods can not achieve the purpose of thoroughly removing necrotic tissue, debris and bacteria in the root canal. Sakai, Nagata (1975) and Martin (1976) proposed a new root canal cleaning method - root canal ultrasonic cleaning method, an attempt to replace the handheld method to clean and wash the root canal. In the past ten years, there have been several types of root canal ultrasonic irrigation devices (Endodontic ultrasonic synergistic system) have come out, and a series of experimental research and the Department