Introduction. The incidence of traumatic teeth injuries is usually estimated in reference to a population of patients presenting to dental clinics. It seems interesting to obtain information concerning this subject-matter on the occasion of epidemiological research on the chewing organ in large, randomly selected populations of children and youth.

Aim. The study aimed to determine the incidence of traumatic injuries to the crown of permanent teeth in 12-year old children.

Material and method. The study covered 475 children from the Lublin primary schools. The schools were randomly selected. A traumatic injuries of permanent front teeth, and the presence – or absence – of the restored tooth tissues was recorded. The occurrence of a trauma, the fact of undertaking the treatment – or the lack thereof – and a possible loss of the restored part of a tooth were confirmed by anamnesis.

Results. Traumatic injuries of teeth were found in 2.52% of the population of 12-year old children under study, and occurred twice more frequently in the boys than in the girls. Medial incisors in the maxilla were injured most often. Eight children had one tooth broken, 4 children – two teeth each. Out of 16 teeth affected with a traumatic injury, 11 had the lost tissues restored, while 5 teeth had never been restored.

Summary. The incidence of traumatic injuries to permanent teeth in 12-year old children from Lublin is lower that it was found in other studies. It seems that the of random selection, applied here, is useful in monitoring and evaluation of traumatic teeth injuries in children and youth for the purposes of public health.