Which of the following single rooted teeth has the most convergence or taper of the proximal root surfaces toward the lingual?

Question

Quizplus · Accepted Answer

From a cervical cross-section view, the roots of single-rooted teeth may appear triangular, with a very small lingual surface; ovoid, with a somewhat smaller lingual than facial surface; or elliptical, with small facial and lingual surfaces of equal size and broad proximal surfaces. The root of a maxillary central incisor is triangular in shape with a very small lingual root surface area. Mandibular central incisor and maxillary first premolars are elliptical in shape and canine roots are ovoid in shape.

Which of the Following Single Rooted Teeth Has the Most