The pulp tissue of a tooth is derived from which embryologic structure?

Correct answer: D. Dental papilla

• A. Incorrect. The dental lamina is the epithelial structure that initiates tooth development — it gives rise to the enamel organ (ameloblasts) and the tooth bud.
• B. Incorrect. The enamel organ is an epithelial structure that gives rise to enamel (via ameloblasts) and some associated structures, but NOT the pulp.
• C. Incorrect. The dental follicle gives rise to the periodontium: the periodontal ligament, alveolar bone, and cementum — NOT the pulp.
• D. Correct. The DENTAL PAPILLA is the mesenchymal condensation that gives rise to the dental pulp (and also to primary dentin via odontoblast differentiation). The dental papilla becomes enclosed by the enamel organ to eventually form the pulp chamber.