Prevalence of dental number anomalies in 4140 cases: retrospective cross-sectional study conducted in Gaziantep

Aims: Dental number anomalies (hypodontia and hyperdontia) are among the most common developmental disorders encountered during the tooth development process in humans. It is known that specific teeth or regions are more frequently affected in different ethnic groups. The aim of this study was to determine the prevalence of congenital dental number anomalies including both missing and supernumerary teeth-excluding third molars, in children living in the province of Gaziantep University. Methods: This study examined the panoramic radiographs of 4140 children aged 8 to 15 who were admitted to the Department of Pediatric Dentistry at Gaziantep University Faculty of Dentistry. Patients with tooth extraction, cleft lip and palate, and systemic diseases were excluded from the study. The cases were investigated regarding gender, age, number, and location of missing teeth. Results: The prevalence of hypodontia was 5.58%, with a total of 414 congenitally missing teeth detected. No statistically significant differences were found across age groups or between sexes (p>0.05). The most frequently missing tooth was the mandibular second premolar, followed by teeth 45, 25, 15, and 22. One or two missing teeth were the most common findings among patients. The mandible exhibited a greater number of missing teeth compared with the maxilla.Hyperdontia was observed in 1.67% of the patients, with a total of 77 supernumerary teeth identified. A statistically significant sex related difference was found (p