PULP

PULP

1. CONNECTIVE TISSUES

   • Essentially a mature Dental Papilla
     • Dentine is calcified pulp
       • FUNCTIONS: dentine formation, protection, sensory

2. Densely innervated

   • NOCIOCEPTIVE RECEPTORS
     • blood vessels have a wide lumen and narrow wall. Blood must flow back out
       • 75% water, 25%organic material

3. PULP LAYERS

   • CELL FREE ZONEOF WEIL
     • CELL RICH ZONE(FIBROBLASTS)
       • PULP CORE

4. PULPAL CELLS

   • Odontoblasts containing polarised nucleus synthetic organelles, secretory granules
     • Fibroblasts most numerous in cell rich zone
     • Defence cells ie macrophages/lymphocytes
     • Ectomesenchymal cells can form new cells for replacement and repair

5. FIBRES OF PULP

   • Collagen fibres make up34% of pulp proteins
     • TYPE I 60% + TYPE III 40%

6. INNERVATION:plexus of Raschkow

7. blood supply is rich, terminating at sub odontoblastic terminal plexus

8. DENTINAL FLUID

   • Contains Glycoproteins,polysaccharides
     • Flows outwards into open tubules due to Interpulpal Pressure