The occurrence of extra teeth beyond the normal dental complement—known as supernumerary teeth or hyperdontia—represents an uncommon developmental variation that can interfere with normal occlusion and tooth eruption. Such anomalies may lead to aesthetic and functional complications, including crowding and delayed eruption. Although prevalence rates have been reported across diverse populations, little is known about their occurrence in smaller or geographically distinct communities. This study examined the frequency and distribution patterns of supernumerary teeth among school-aged children and adolescents from Lesvos Island, Greece. Dental panoramic radiographs from 621 Caucasian patients aged 9–16 years were retrospectively reviewed. All radiographs were obtained from orthodontic and general or pediatric dental clinics in Mytilini, Lesvos. Each image was screened to document the presence, number, morphology, and arch position of supernumerary teeth, and the findings were analyzed by sex and dental arch.
Fifteen participants presented with at least one supernumerary tooth, yielding a prevalence rate of 2.4%. Males exhibited a marginally higher frequency (1.4%) compared with females (1.0%). Most cases involved the maxillary arch (1.9%). The mesiodens type was the most prevalent, followed by supernumerary lateral incisors, paramolars, and a single maxillary central incisor. The prevalence of hyperdontia in this cohort aligns with previously documented values for comparable populations. Mesiodens was the dominant type and occurred mainly in the upper jaw. Routine radiographic evaluation remains vital for early recognition and effective treatment planning of such anomalies.
