A single-rooted tooth canal has a triangular cross-sectional shape with the base facing the facial side and the apex pointing lingually. Additionally, the mesial side of the triangle is longer than the distal side. Which tooth does this description most likely correspond to?
Explanation
The maxillary central incisor typically exhibits a triangular pulp canal shape in cross-section, with the base oriented facially and the apex lingually. The mesial side of this triangle is longer than the distal side, distinguishing it from other anterior teeth.