peritubular zone

per·i·tu·bu·lar zone

the dentinal matrix surrounding the odontoblastic process; it is more highly calcified and contains finer collagen fibers than does the rest of the dentinal matrix.

per·i·tu·bu·lar zone

(peri-tūbyū-lăr zōn)
Dentinal matrix surrounding odontoblastic process; more highly calcified and contains finer collagen fibers than the rest of dentinal matrix.