Pulp

Front 1

what is the pulp cavity?

Back 1

entire internal space of tooth containing pulp tissue; comprised of chamber, canals, and horns; general shape and dimensions correspond to external contours of tooth

Front 2

pulp horns reflect what?

Back 2

reflect lobe and cusp of tooth

Front 3

pulp canals are typically called ________

Back 3

root canals

Front 4

root w/ round cross-sections have how many canals?

Back 4

1

Front 5

Root w/ elongated oval cross section has how many canals

Back 5

often more than one canal

Front 6

what is the apical foramen?

Back 6

constricted opening at or near root apex through which nerves and blood supply pass through

Front 7

smaller lateral extensions are found where?

Back 7

Found in apical third most often

Front 8

what is a supplementary canal?

Back 8

excess of the normal number of canals

Front 9

anastomosis

Back 9

canal branch that horizontally connects between canals

Front 10

4 functions of pulp tissue

Back 10

1. formation of dentin by odontoblasts
- primary dentin
- secondary physiologic dentin
- tertiary reparative dentin
2) nutrition - blood and lymph vessels provide nutrition to maintains pulp vitality
3) sensation via nerve tissue
4) defense and protection - formation of secondary reparative (tertiary) dentin in response to caries, irritation or trauma

Front 11

5 regions of pulp histology:

Back 11

1) odontoblastic columnar layer
2)zone of weil (cell-free layer)
3)cell-rich zone: fibroblasts, macrophages, lymphocytes
4)pulp proper
5)central pulp region - blood and lymph vessels, nerve fibers

Front 12

central incisors have how many pulp horns?

Back 12

3 pulp horns, triangular cervical cross-section

Front 13

lateral incisor exhibits how many horns?

Back 13

2 or none; round cross-section

Front 14

pulp chambers of maxillary incisors are wider which direction?

Back 14

M-D

Front 15

how many canals in maxillary incisors?

Back 15

1

Front 16

mandibular incisors have how many canals?

Back 16

1 - wider F-L

Front 17

do mandibular incisors have pulp horns

Back 17

no

Front 18

maxillary canine has what greatest dimension of anteriors?

Back 18

F-L

Front 19

do maxillary canines have pulp horns?

Back 19

no, but pointed incisal portion

Front 20

what shape is the cross-section of the maxillary canine?

Back 20

oval cervical cross section

Front 21

do mandibular canines show 2 roots and 2 canals?

Back 21

6%, labial and lingual

Front 22

maxillary 1st premolars have how many roots and canals?

Back 22

2, sometimes 1 root and 2 canals

Front 23

describe the pulp horns of the maxillary 1st premolar

Back 23

2 pulp horns - buccal larger than lingual, lingual canal has larger orifice (opening)

Front 24

the maxillary 1st premolar pulp chamber is wider which direction

Back 24

F-L

Front 25

the diameter of which maxillary 1st premolar canal is wider

Back 25

diameter of lingual canal wider than buccal canal*

Front 26

which canal in the maxillary 1st premolar is longer

Back 26

buccal canal longer than lingual canal*

Front 27

What are the 3 possible mid-root cross sections for the maxillary 1st premolar?

Back 27

1) bean shaped - single root
2) hour-glass - laminated root
3) 2 separate round outlines - 2 roots

Front 28

maxillary 2nd premolar has how many roots and root canals? how many pulp horns?

Back 28

normally 1 root and 1 canal, occasional lamination and branching of canal at apical 3rd ; 2 pulp horns

Front 29

which direction is the pulp chamber wider in the maxillary 2nd premolar

Back 29

F-L

Front 30

describe the mandibular 1st premolar pulp horns and canal

Back 30

2 - larger buccal and smaller lingual; normally 1 canal - occasionally 2 canals (buccal and lingual)

Front 31

mandibular 2nd premolar has how many pulp horns and canals

Back 31

2-3 pulp horns and normally one canal, occasionally 2 canals

Front 32

the mandibular 2nd premolar pulp chamber is more ______ than the 1st mandibular premolar

Back 32

ovoid

Front 33

maxillary 1st molar has how many pulp horns and canals?

Back 33

4 pulp horns
3-4 pulp canals:
- lingual (1) - largest, ovoid M-D*
- distobuccal (1) - smallest
- mesiobucal (1-2) - ovoid F-L

Front 34

maxillary 2nd molar is similar to 1st except for what?

Back 34

MB usually just 1 canal, occasionally 2 canals

Front 35

how many roots and pulp canals does the mandibular 1st molar have?

Back 35

2 roots, but usually 3-4 pulp canals
- MB and ML canals
- Distal canal (or DB and DL)

Front 36

mandibular 2nd molar has how many canals

Back 36

usually 3 - MB, ML, D
sometimes only 2 - M and D

Front 37

cross section of mandibular 1st molar canals

Back 37

distal - largest and ovoid
MB - next largest and round
ML - smallest and round