Taurodontism is a rare developmental anomaly which is related to the morphoanatomical structure of the teeth. Taurodont teeth; It has characteristic features such as larger pulp chamber, pulpal base elongated apically, and the absence of the narrowing observed at the enamel-cementum junction in a normal teeth. Although this anomaly is frequently encountered in molars, it can also be seen in incisors and premolars rarely. In this article, endodontic treatment of meso-taurodont mandibular right and left first molars in a patient without a systemic disease or syndrome is reported.