The tooth rotation consists of a dental anomaly of position, in which there is a displacement of the tooth within the alveolar bone around its longitudinal axis. This study proposes to describe a rare condition of rotation of 180° in a lower right central incisor, no history of trauma or any other dental dental anomaly in the oral cavity. Thus, we sought to gain a deeper understanding of this anatomical variation, which can cause occlusal problems in patients, to alert the dental surgeons, so they are prepared to carry out a careful planning of the teeth involved.