[Congenital absence of permanent teeth].

In 76 patients treated at the Department of Conservative Stomatology, Institute of Stomatology, Medical Academy in Lublin congenital absence of anlages of permanent teeth was found. The patients were aged 8 to 18 years, including 49 girls and 27 boys. In the whole group absence of 214 teeth was noted, i.e. 136 in girls and 78 in boys. In the examinations it was observed that congenital absence of permanent teeth was more frequent in girls than in boys, 2) most frequently only one tooth was absent in a given patient, 3) upper teeth were lacking more frequently than lower teeth, and absence of right teeth was more frequent than left teeth, 4) the greatest group among absent teeth were upper lateral incisors, while second upper molars in the maxilla were least frequently absent.