The dental pulp is the soft connective tissue inside teeth that supports dentin. It has four zones - the odontoblastic zone near the dentin, a cell-free zone beneath it, a cell-rich zone with many cells, and a pulp core containing major blood vessels and nerves. Odontoblasts are distinctive cells that form dentin, with about 60,000 per square millimeter. The pulp also contains fibroblasts that form collagen matrix, undifferentiated cells that give rise to connective tissues, macrophages that eliminate dead cells, lymphocytes, dendritic cells, nerves, and occasionally calcified pulp stones.

1. Pulp

8. The cervical loop area: (1) dental follicle cells, (2) dental mesenchyme, (3) Odontoblasts, (4) Dentin, (5) stellate reticulum, (6) outer enamel epithelium, (7)inner enamel epithelium, (8) ameloblasts, (9) enamel.