Edition V02N01 | Year 2012 | Editorial Original Article | Pages 65 to 69
Introduction: Perforation is defined as communication between the root canal and the external tooth surface, normally occurs during endodontic treatment and is induced by iatrogenic causes. There are some conditions that favor the perforations, among others the irregular morphology of root canals, root dilaceration, error during pulp chamber preparation, excessive wear of root canal walls and inadequate preparation for intraradicular post placement. Methods: The definitive diagnosis of this type of iatrogenic condition is very difficult due the limitation of periapical radiography, as it offers a two-dimensional image and superimposition of structures. For this reason, imaging methods such as computerized tomography, which allows all the root faces to be evaluated, should be used in order to diagnose and inform the location of root perforations with greater precision. Conclusion: The present study demonstrated the importance of cone beam computerized tomography in the diagnosis of root perforation in three clinical cases.