Jaramillo David E, Jeong Ji W, Shen Zhen, Divito Enrico
Department of Endodontics, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX 77054, USA.
Arizona Center for Laser Dentistry, Scottsdale, AZ 85255, USA.
Dent J (Basel). 2025 Apr 29;13(5):195. doi: 10.3390/dj13050195.
Pulp tissue debridement and the eradication of microorganisms from an infected root canal system before obturation is a primary focus of endodontic treatment and the best predictor for the long-term success of endodontic treatment. The purpose of this in vitro laboratory study was to evaluate pulp tissue debridement and the disinfection efficacy of two different Er;Cr:YSGG laser units, with a 2790 nm wavelength, compared to ultrasonic-activated irrigation (UAI) in root canals infected with . Human non-infected mandibular first molars were extracted, disinfected, and cultured with . Different types of Er;Cr:YSGG laser irrigation and UAI were performed according to the manufacturers' protocols. The teeth were then processed for bacteriological and SEM analyses. The different laser-activated irrigation protocols showed multiple areas of remaining bacteria, biofilm, tissue, and thermal ablation. The laser fiber tips also displayed significant tip degradation after use, which might affect efficacy. In this in vitro study, laser-activated irrigation using Er;Cr:YSGG technology and UAI were inefficient in eliminating pulp tissue from difficult-to-reach areas and from infected root canals.
在根管充填之前，对牙髓组织进行清创并清除感染根管系统中的微生物是牙髓病治疗的主要重点，也是牙髓病治疗长期成功的最佳预测指标。本体外实验室研究的目的是评估两种不同波长为2790 nm的铒铬钇石榴石（Er;Cr:YSGG）激光装置与超声激活冲洗（UAI）相比，在感染根管中对牙髓组织的清创和消毒效果。拔除人类未感染的下颌第一磨牙，进行消毒，并接种……。根据制造商的方案进行不同类型的Er;Cr:YSGG激光冲洗和UAI。然后对牙齿进行细菌学和扫描电子显微镜分析。不同的激光激活冲洗方案显示出多个残留细菌、生物膜、组织和热消融的区域。激光光纤尖端在使用后也显示出明显的尖端降解，这可能会影响疗效。在本体外研究中，使用Er;Cr:YSGG技术的激光激活冲洗和UAI在清除难以到达区域的牙髓组织和感染根管中的牙髓组织方面效率低下。
