The results of this study give the clinician insight into whether ridge preservation is required during extraction in the anterior maxilla in preparation for an implant restoration. (J Esthet Restor Dent 29:137-145, 2017).

Common odontogenic cysts and ameloblastomas of the jaw are often associated with external root resorption of adjacent teeth. Principal findingsAmeloblastomas were eight times more likely to cause root resorption than odontogenic keratocysts while dentigerous cysts were three times more likely to cause root resorption than odontogenic keratocysts. We found a clear association between the type of lesion and the presence of external root resorption.

No abstract