Dental On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects? A Maxillary central incisor B Mandibular central incisor C Mandibular lateral incisor D Mandibular second premolar 💡 Explanation On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects? ✓ Correct Answer: B. Mandibular central incisor