Non-syndromic Multiple Permanent Impacted Supernumerary Teeth: a Retrospective Study

Background and Aim : The objective of this study was to evaluate the prevalence of non–syndromic supernumerary teeth, to classify them, to identify the related complications, and to determine the type of the treatment for them. Subjects and Methods : This retrospective study used 7753 panoramic radiographs of patients who presented themselves at Oral and Maxillofacial Surgery Department from January 2000 to December 2009. Multiple supernumerary teeth on both jaws on panoramic radiographs were included in this study. The prevalence of supernumerary teeth was determined, and they were classified by morphology. Both panoramic radiographs and patient records for associated pathologies such as cyst formation, root resorption, and effect on dentition were evaluated. Results : In adult 4 patients (3 males and 1 female), a minimum of 5 and a maximum of 8 supernumerary teeth were found. The mean patient age was 19.75±2.06 years (range 17–22 years). A total of 25 supernumerary teeth were found, and all were impacted. None of the patients exhibited any associated syndrome. All patients were normal in height, weight, and physical development for their ages. The most frequent locations were the mandible and premolar–molar region. The morphology of the most common supernumerary teeth was tuberculate (15 supernumerary teeth), and followed by 2 circular-oval, 2 conical, and 1 incisiform. While the odontoma and some supernumerary teeth associated with permanent impacted teeth were extracted, the others were followed up. Conclusion : Multiple supernumerary teeth rarely occur outside associated syndromes, and in this study, their prevalence was found to be 0.052%.