Which of the following can be viewed on a conventional radiograph?: (A) Buccal curvature of roots, (B) Gingival fibers, (C) Calcification of canals, (D) Periodontal ligament
Answer is C. Calcification of canals. Buccal curvature cannot be seen from the conventional radiographs. Gingival fibers and the periodontal ligament, being connective tissues, are radiolucent radiographically.