[Endodontal and periodontal aspects of root perforations].

The purpose of treatment of perforations is to achieve a tight and permanent seal that will prevent bacteria and their by-products in the root canal from entering into the surrounding periodontal tissues. It is important to consider the type of perforation according to the classification for selection of the proper material and technique for each case. Modern techniques for treatment of perforations by orthograde and surgical approach result in prolonged survival of the tooth.