Background
dentine
ROOT RESORPTION
External root resorption (ERR) has a multifactorial etiology and is difficult to diagnose, which means that is continues to be of research interest. The ERR is defined as the permanent loss of dental tissue, affects the cementum and dentine, and in the most severe forms, it may even compromise the dental pulp tissue [In this context, one of the most common difficulties in the detection of ERR is the visualization and accuracy of radiographic images [