Dentin – Pulp Complex Laboratory

Temple University School of MedicineTemple University School of Medicine

Overview of Dentin

Dentin is a hard tissue that lines the inner surface of the root and it is covered by enamel or cementum. It is comprised of the processes of odontoblasts called dentinal tubules between which is mineralized matrix.

cementum

dentin

dentin-cementum junction (DCJ)

dentinal tubules

Tomes’ granular layer

Contour lines of Owen

Image 1

peritubular dentin intertubular dentin

Image 2

reparative dentin dentinal tubules

Image 3

dentin-enamel junction enamel spindles contour lines of Owen

Image 4

Dentinogenesis - low magnificationIdentify:

Dentin

Cervical loop

Image 5

Dentinogenesis - low and high magnificationsIdentify:

Inner enamel epithelium

Presecretory odontoblasts

Presecretory ameloblasts

Dentin

Secretory odontoblasts

Image 6

low high

Dentinogenesis - low and high magnificationsIdentify:

Secretory ameloblasts

Functional odontoblasts

Odontoblastic process

Dentin

Predentin

Image 7

Pulp - low magnificationIdentify: Dentin

Odontoblasts

Pulp core

Image 8

Pulp - medium magnificationIdentify: Odontoblast layer

Cell-free zone

Cell-rich zone

Image 9

Pulp - high mag.Identify: Odontoblast layer

Cell-free zone

Cell-rich zone

Dentinal tubules

Blood vessels

Image 10