Background: Hyperdontia is one of the most prevalent dental anomalies that affect primary or permanent dentition. It is any tooth or tooth like structure that can be found anywhere in the dental arches and may causes various orofacial complications. Early detection and treatment of supernumeraries prevent possible future complications.
Aim: assess the prevalence and complications associated with erupted supernumerary teeth among a group of Egyptian children. Methodology: Patients who fulfilled the eligibility criteria were recruited from the Outpatients' clinic of Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Cairo University. Children were examined clinically for the prevalence of erupted supernumeraries taking into consideration their type, location and shape. and the associated complications.
Results: Out of the examined 604 patients , only 13 patients (2%) were diagnosed with hyperdontia, their ages ranged between 6 and 15 years old (mean age= 8.5 years old), with male: female ratio equals = 1.6:1. Out of the examined supernumeraries, 9 teeth (69%) were mesiodentes causing (19 oral complications) and 4 teeth (31%) were supplemental teeth causing 3 dental complications and 1 supplemental tooth with no specific complication. Gingivitis was the most common complication associated with erupted mesiodentes and crowding of dental arches was the most common complication caused by supplemental teeth. Conclusion: The prevalence of hyperdontia was 2% and complications were associated with all of the diagnosed mesiodentes and gingivitis was the most common one. While the majority of the found supplemental teeth caused crowding and the remaining had no specific complications.