Purpose of this study was to define frequency hyperdontia of permanent teeth), localisation in jaws, number and sort of supernumerary teeth. There were analysed 1240 patients both sexes ages 7-15, from Knjazevac.38 patients have hyperdontia of one or more teeth (3,06 %). 36 persons (94,74 %) have supernumerary teeth in upper jaw and only 2 per sons (5,26 %) have supernumerary teeth in lower jaw. Number of supernumerary teeth was 1 to 2. The prevailing number of children have lack of one tooth. The most often localisation was area between upper central incisors (mesiodens)-52,63%. It will be shown a cases with: supernumerary central and lateral incisors, supernumerary upper second premolar and supernumerary lower central incisor. It will be shown also a girl with hypodontia upper lateral incisor and hyperdontia upper central incisor at the same time. .
