An incisor tooth has a composite veneer and has previously had root canal treatment. On radiograph, the post is visible with adequate length and no apical pathology. The patient reports no pain. What treatment is indicated?

Correct answer: A. Crown only (no need to change the existing post/core)

• A. Correct. When a root canal-treated tooth has an existing post/core with: adequate post length, no apical pathology, no symptoms, and the only issue is an esthetic/functional crown problem — the post and core should be left undisturbed. Only a new crown is needed. Replacing a functioning post-core without indication risks root perforation or fracture.
• B. Extraction is not indicated when the tooth is asymptomatic with no pathology.
• C. Removing a functional post with no evidence of failure or pathology is not indicated — this would risk root fracture without benefit.
• D. Retreatment is not indicated in an asymptomatic tooth with no radiographic pathology.