Cementum

Question 1

where is cementum found

Answer 1

covering root dentine (equivalent to enamel but for root)

Question 2

what cells form cementum

Answer 2

cementoblasts

Question 3

acellular cementum

Answer 3

no cells
adjacent to dentine
first formed (primary cementum)

Question 4

cellular cementum

Answer 4

contains cementocytes
later formed (secondary cementum)
found in apical part of root and furcation regions

Question 5

furcation regions

Answer 5

regions where roots separate

Question 6

what are the 3 options for the amelo - cementum junction

Answer 6

1 - cementum overlaps enamel
2 - cementum meets enamel
3 - gap between cementum and enamel exposing dentine (causes sensitivity)

Question 7

what is the function of sharpeys fibres (periodontal fibres)

Answer 7

connect tooth to bone

Question 8

what is the alternative classification of cementum

Answer 8

origin of matrix fibres
acellular, extrinsic fibre cementum - contains mostly sharpeys fibres which are extrinsic (outside) to cementum (cervical 2/3)
cellular , intrinsic fibre cementum - no role in tooth attachment therefore no sharpeys fibres. found in apical region of tooth aand fibres are intrinsic