Dens invaginatus or tooth within the tooth is less common, developmental anomaly of dental tissue of unknown origin affecting predominantly upper lateral incisors. The extent of the lesion reveals broad variability.
It often results in the pulp necrosis or an atypical chronic periodontitis. The anomaly represents aesthetic and therapeutic problems even at present.
This report deals with a typical lesion of the 3A subtype according to Oehlers'classification in a young individual, treated by the tooth removal and its immediate replacement by the composite adhesive fixed bridge.