Root agenesis associated with chronic infection and traumatic curettage of the maxillary sinus.

[dentin dysplasia]

A healthy 13 -year -old female was found to have no roots on the maxillary left second premolar and permanent first and second molars . Her history included chronic sinus infections treated with maxillary sinus curettage at approximately 4 years of age . The infection , or more likely the trauma associated with the surgery , may have caused agenesis of the roots . Other causes of rootless teeth such as odontodysplasia , dentin dysplasia , trauma , infection , radiation therapy , and neoplasia were excluded from her history and clinical and radiographic findings . This report suggests that damage to the developing dentition may be a serious complication of maxillary sinus surgery or chronic infection .