Abstract
In the root canal treatments of primary teeth, a good prognosis can be acquired by the controls of inflammation and root resorption. However, on account of the complicated root canal forms in pri mary teeth and physiological root resorption with exchange to permanent successors, there are some cases in which the ideal treatments do not become possible. In the current stage, it is important to effectively remove bacterial bio-films in root canals and smear layers with reaming and filing on root canal walls. Root canal irrigation with sodium hypochlorite with ultra sonic and/or EDTA with ultra sonic can remove bio-films and smear layers on the root canal walls. By means of irrigation, we can sufficiently utilize the effects of calcium hydroxide and other root canal medications. And the result,the prognosis of the root canal treatments seems to become good. In addition, our efforts are necessary for the development and discovery of good methods in root canal treatments including the root repair mechanism with cementum deposition of primary teeth.
