External root resorption in maxillary and mandibular second molars associated with impacted third molars: a cone-beam computed tomographic study

ConclusionsERR occurring in M2s adjacent to impacted M3s is common, especially in mandibular M2s. ERR in maxillary M2s cannot be neglected because of its relatively high severity. Mesial angulation and impaction depth of M3 are significantly associated with ERR in M2s. For ERR in maxillary M2s, age is another predictive parameter.Clinical relevanceConsidering the presence of ERR is associated with M3s ’ impaction, watchful monitoring or prophylactic removal of impacted M3s should be deliberated especially for the patients over 25 years and with mesially inclined and deeply positioned M3s.

Source: Clinical Oral Investigations - February 22, 2019 Category: Dentistry Source Type: research