Pulp

Question 1

origin of pulp

Answer 1

inner cells of dental papilla-mesenchyme

Question 2

functions of pulp

Answer 2

1. support and maintaince of coronol dentin
2. sensory
3. nutritional
4. protective-undifferentiaed mesenchymal cells-fribroblasts

Question 3

the layers of pulp

Answer 3

1. coronal-shadows tooth shape; 6 sides with the apical/occulsal sides diminishing first
2. radicular-continious with periapical tissue-tubular in shape
3. pulp horns-most occlusal extent of pulp

Question 4

Apical foramen characteristics

Answer 4

1. maxillary width of 0.4 mm
2. mandibular width of 0.3 mm
3. clinically average width is 0.1 mm from the apex

Question 5

Microscopic features of the pulp and characteristics

Answer 5

1. fibroblasts-protein synthesis; collagen
2. odontoblasts-reside near dentin in deepest area and helps with sensory
3. undifferentiated mesenchymal-extra cells that help make things
4. pulp stones

Question 6

types of pulp stones

Answer 6

1. free-not attached to pulp chamber wall
2. attached-attached to pulp chamber wall
3. embedded-embedded into the dentin

Question 7

microscopic pulp zones

Answer 7

1. odontoblastic layer
2. cell-free zone
3. cell-rich zone
4. pulpal core

Question 8

odontoblastic layer characteristics

Answer 8

nearest to dentin and most superficial

where secondary and tertiary dentin formation occurs

Question 9

cell-free zone characteristics

Answer 9

nearest capillaries

Question 10

cell-rich zone characteristics

Answer 10

rich in vasculature

Question 11

pulpal core characteristics

Answer 11

deepest and has an extensive vascular supply

Question 12

what microscopic pulp zones increase vascularity and increase density of nerves

Answer 12

1. cell-free zone
2. cell-rich zone
3. pulpal core

Question 13

cell changes due to pulp age changes

Answer 13

fewer cells with age and fewer organelles per cell with age

Question 14

fibrosis changes due to pulp age changes

Answer 14

with age there is an increase with fibers

Question 15

plaque changes due to pulp age changes

Answer 15

it forms on the inner walls of vessels and can restrict flow

Question 16

What causes pulpitis and characteristics

Answer 16

1. pupal hyperemia-follows restoration and is usually transient
2. acute pulpitis-hurts very bad and is a rapid onset of hot/cold sensitivity and not transient
3. chronic pulpitis-comes and goes; a nagging sensation
4. chronic hyperplastic pulp-usually seen in children; pulp grows out of the occlusal of the tooth
5. necrotic or gangrene pulp-dead pulp, no blood flow, and destruction of PDL

Question 17

size of pulp

Answer 17

chambers decrease with age but only due to dentin forming, not the pulp constricting

Question 18

accessory canals in pulp

Answer 18

can be problematic for long haul

Question 19

pulp caps: direct and indirect

Answer 19

direct: bleeding goes away and you put a material over it to help with tertiary dentin formation
indirect: taking away decay and pulp turns pink; remove after 3 moths and then looks like direct pulp caps

Question 20

pulpotomy

Answer 20

done to primary dentition; removing coronal pulp; only works when vital

Question 21

pulpectomy

Answer 21

root canal

Question 22

symptoms of pulp disease

Answer 22

1. cold/hot sensitivity
2. trauma from occlusion
3. percusion sensitivity
4. only feels good when they put something cold in their mouth is a huge sign of pulp disease