Pulp

Question 1

What is the origin of pulp?

Answer 1

Inner cells of dental papilla (mesoderm).

Question 2

What are the four main functions of pulp?

Answer 2

1. Support/Maintenance of Coronal Dentin
2. Sensory
3. Nutritional
4. Protective

Question 3

What two structures are associated with the protective function of pulp?

Answer 3

1. Undifferentiated mesenchymal cells

2. Fibroblasts

Question 4

What are pulp horns?

Answer 4

Occlusal most extent of the pulp.

Question 5

What is the coronal pulp?

Answer 5

The portion of the tooth shadows the tooth shape.

Question 6

What is the radicular pulp?

Answer 6

Portion of the pulp that is continuous with periapical tissue and is tubular in shape.

Question 7

What is the maxillary width of the apical foramen?

Answer 7

.4mm

Question 8

What is the mandibular width of the apical foramen?

Answer 8

.3mm

Question 9

Clinically what is the average distance from the apex to the apical foramen?

Answer 9

1mm

Question 10

What are the four microscopic features of the pulp?

Answer 10

1. Fibroblasts
2. Odontoblasts
3. Undifferentiated mesenchymal cells
4. Pulp Stones

Question 11

What is the function of the fibroblasts?

Answer 11

Protein synthesis; collagen (connective tissue substrate)

Question 12

What is the function of odontoblasts?

Answer 12

Part of sensory function of pulp.

Question 13

Where are odontoblasts located?

Answer 13

Resides near dentin.

Question 14

What are the three types of pulp stones? Where are they?

Answer 14

Free: not attached to pulpal chamber wall
Attached: attached to pulpal chamber wall
Embedded: in dentin, no obstruction of pulp pathways