JVD 2010 27

Question 1

Hernandez et la, scanning electron microscopy of pulp cavity dentin in dogs

Which characterises does dentin share with human dentin ?

Answer 1

Decrease in diameter and density of dentinal tubules in a corona apical direction
Decreases in diameter with age

Question 2

What does not change in Hernandez paper 2010 in the dog’s dentin

Answer 2

Tubule density is not influenced by age or occlusal surfaces

Question 3

Is diameter and surface of dentinal tubules influenced by occlusal forces ?

Answer 3

Yes

Question 4

Dentin diameter is influenced by ?

Answer 4

Occlusal forces - greater diameter
Coronal apical direction - decrease
Age - decrease

Question 5

Tubule density is not influenced by ?

Answer 5

Age
Occlusal forces

Question 6

Dentin tubules area is influenced by

Answer 6

Decreases in coronaapical direction

Question 7

What is tubular density ?

Answer 7

Number of dentinal tubules per unit area of dentin ( tubules/mm2)

Question 8

Dentinal tubular area

Answer 8

Cross sectional area of dentinal tubules
Area of dentinal tubules can influence the permeability of dentin