Dental Which of the following permanent teeth is most difficult to distinguish from mesial and distal aspects: A Mandibular central incisor. B Mandibular lateral incisor. C Maxillary central incisor. D Maxillary lateral incisor. 💡 Explanation Which of the following permanent teeth is most difficult to distinguish from mesial and distal aspects: ✓ Correct Answer: A. Mandibular central incisor.