6-year-old child with erupted incisors. X-ray shows wide pulp canals. Diagnosis:

Correct answer: A. Normal anatomy

• A. Correct. Newly erupted permanent teeth in a young child have wide, open pulp canals/apices as a normal developmental finding before root completion, not a pathologic process.
• B. Dentinogenesis imperfecta would show additional findings such as bulbous crowns, obliterated pulp chambers, and translucent/discolored teeth, not simply wide canals from normal eruption.
• C. Taurodontism describes an elongated pulp chamber with apically displaced furcation in molars, not the normal wide canal appearance of a newly erupted incisor.
• D. Pulp stones are calcified nodules within the pulp, the opposite finding of a wide-open canal.