Internal root resorptions: current state of understanding

Internal root resorption (IRR) is a resorption of dentin canal wall due to the action of clastic cells. This rare endodontic disease starts in pulp chamber and is usually an asymptomatic lesion diagnosed coincidentally through routine radiographs. However, sometimes it may manifest clinically as a “pink spot” and pain can be associated to IRR when it becomes external. IRR usually occurs in anterior teeth and mandibular molars. The treatment of IRR has always been a conventional one, now improved by the use of plenty of armamentarium such as rotary files, bioceramic materials, combination of activated irrigants with ultrasonic tips, LASERs, and the old school temporization with Ca(OH)2. The purpose of this article is to address the current approaches for the diagnosis and management of IRR.