Huiz Peeters Harry, Suardita Ketut, Mooduto Latief, Gutknecht Norbert
Laser Research Center in Dentistry, Bandung, Indonesia.
Department of Conservative Dentistry, Faculty of Dentistry, Universi tas Airlangga, Surabaya, Indonesia.
Iran Endod J. 2018 Spring;13(2):169-175. doi: 10.22037/iej.v13i2.17150.
Sodium hypochlorite (NaOCl) irrigation is critical for the success of endodontic treatment and several agitation techniques have been developed to improve the efficacy of this irrigation. Using a combination of contrast medium and radiographic examination, this study evaluated NaOCl extrusion during agitation of irrigant. Development of pressure, which may result in apical extrusion of the irrigant, has been described during laser-activated irrigation (LAI) and passive ultrasonic irrigation (PUI).
We examined 40 single root canals categorized as having open apices with apical lesions in 40 patients. For the final irrigation, the teeth were irrigated with a mixture of radiopaque contrast medium and 2.5% NaOCl in solution. The solution was activated for 60 sec in both groups [the Er, Cr: YSGG laser group (=20) and the ultrasonic group (=20)]. The teeth were imaged subsequently using radiography for the evaluation of contrast extrusion.
Radiopaque contrast medium was absent from the periapical tissues in all cases.
Use of LAI or PUI appears to be safe as used currently in endodontic treatment.
次氯酸钠（NaOCl）冲洗对于牙髓治疗的成功至关重要，并且已经开发了几种搅拌技术来提高这种冲洗的效果。本研究使用造影剂和放射检查相结合的方法，评估了冲洗液搅拌过程中NaOCl的挤出情况。在激光激活冲洗（LAI）和被动超声冲洗（PUI）过程中，已经描述了可能导致冲洗液根尖挤出的压力形成情况。
我们检查了40例患者的40个单根管，这些根管被分类为根尖开放且伴有根尖病变。对于最终冲洗，用不透射线的造影剂和2.5%的NaOCl溶液混合物对牙齿进行冲洗。两组[铒铬：钇钪镓石榴石激光组（=20）和超声组（=20）]均将溶液激活60秒。随后使用放射摄影对牙齿进行成像，以评估造影剂的挤出情况。
所有病例的根尖周组织中均未发现不透射线的造影剂。
目前在牙髓治疗中使用LAI或PUI似乎是安全的。
