Ozalp Nurhan, Okte Zeynep, Ozcelik Berrin
Department of Pedodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey.
J Endod. 2006 Dec;32(12):1202-4. doi: 10.1016/j.joen.2006.08.009. Epub 2006 Oct 30.
The purpose of this in vitro study was to evaluate the effectiveness of sodium hypochlorite and glutaraldehyde for rapid sterilization of gutta-percha cones contaminated with Bacillus subtilis ATCC 6633. Cones were treated with either 2% glutaraldehyde or 2.5% sodium hypochlorite. The gutta-percha cones were sterilized with a 2.5% sodium hypochlorite solution throughout the test. Glutaraldehyde did not decontaminate the gutta-percha cones even after 15 minutes of contact. All positive controls showed positive results during the first 24 hours. Negative controls were followed up for 24 and 48 hours and demonstrated the efficiency of previous sterilization. No microbial growth was observed in the groups tested. Even though gutta-percha cones are usually sterile during storage, they can be easily contaminated if incorrectly manipulated. NaOCl at 2.5% concentration is an effective agent for decontamination of gutta-percha cones at no additional cost.
本体外研究的目的是评估次氯酸钠和戊二醛对被枯草芽孢杆菌ATCC 6633污染的牙胶尖进行快速灭菌的效果。将牙胶尖用2%戊二醛或2.5%次氯酸钠处理。在整个测试过程中，牙胶尖用2.5%次氯酸钠溶液进行灭菌。即使接触15分钟后，戊二醛也未能对牙胶尖进行去污处理。所有阳性对照在最初24小时内均显示阳性结果。阴性对照随访24小时和48小时，证明了先前灭菌的有效性。在所测试的组中未观察到微生物生长。尽管牙胶尖在储存期间通常是无菌的，但如果操作不当，它们很容易被污染。2.5%浓度的次氯酸钠是一种有效的牙胶尖去污剂，且无需额外费用。
