[Problems in the root canal treatment of premature teeth with open apex].

The root canal treatment of pulpless teeth with open apex was always a problem in the field of endodontics. On occasions, various techniques have been used for the hermetic sealing of these teeth, and finally, the method of root canal filling with calcium hydroxide and CMCP (camphorous para mono chlorophenol) was adopted. This method was considered to be the most biological, and as it was proved the influence of calcium hydroxide, closing of the apex was achieved by various types of tissues. In this study we describe the problems that arise in such cases, as well as the various treatments. Finally cases of children who came for therapy in the clinic of Endodontics will be presented.