Lower canines seem to exhibit a higher degree of prevalence of external resorption than other teeth. Perhaps it’s the higher forces as they guide the occlusion. Perhaps it’s their position as the corner of the arch which. Perhaps its the periodontal treatments that these teeth undergo. Or maybe it’s something else. 3D imaging helps determine the restorability of these teeth. When the resorption passes two line angles most times I’ll throw in the towel. This was the case with the contralateral tooth. By way of clinical classfication this one was external moderate scooping resorption. As is always the case there is osseous in-growth. It’s important to remember that there is hard tissue replacement when reading the scan or the extent of the resorption may be underestimated. It’s important to remove the osseous ingrowth and resect it back until healthy periodontal ligament can be observed under the microscope. As is typical of these cases, the soft tissue looks good at 48 hours during the suture removal appointment.