[Maturation of residual tissue, left in the jaw after injury]

An eight-year old patient was observed for a period of eleven months: after the traumatic loss of a front tooth, the root of which had not fully grown, the maturing of the remnants of the follicle which were probably injured by the avulsion and not yet fully mineralized, was studied. In the histological examination of the enucleated dental hard material, regions of irregular dentin were found.