Leonardo M R, Almeida W A, da Silva L A, Utrilla L S
Department of Endodontics, Araraquara Dental School, UNESP, Brazil.
J Endod. 1995 Mar;21(3):137-41. doi: 10.1016/s0099-2399(06)80439-5.
Dogs' teeth with induced chronic periapical periodontitis were treated endodontically by two different methods, and the results were compared. A total of 40 root canals from the upper and lower premolars of two dogs were prepared chemomechanically. In method 1, a high-concentration (5.25%) hypochlorite solution was used during the instrumentation of the root canal, and an antibacterial dressing was applied between sessions, followed by filling of the root canal. In method 2, a low-concentration (0.5%) sodium hypochlorite solution was used as an adjunct to mechanical debridement, and the root canal was filled during the same session. The histopathological results showed that method 1 led to better periapical repair than method 2.
对患有诱导性慢性根尖周炎的犬牙采用两种不同方法进行根管治疗，并比较结果。对两只犬的上下前磨牙共40个根管进行化学机械预备。方法1：在根管预备过程中使用高浓度（5.25%）次氯酸盐溶液，每次治疗期间放置抗菌敷料，随后进行根管充填。方法2：使用低浓度（0.5%）次氯酸钠溶液辅助机械清创，并在同一次治疗期间进行根管充填。组织病理学结果显示，方法1比方法2能带来更好的根尖周修复效果。
