Cementum

Question 1

what does cementum cover?

Answer 1

root dentine

Question 2

what is the structure of cementum and what is it similar to?

Answer 2

collagen matrix and lamellar arrangement and is similar to bone

Question 3

what does cementum provide attachment for?

Answer 3

some periodontal fibres

Question 4

what is cementum laid down by?

Answer 4

cementocytes

Question 5

what are the two types of cementum?

Answer 5

cellular and acellular

Question 6

describe acellular cementum?

Answer 6

no cells within, usually adjacent to dentine, first formed

Question 7

what type of cementum is primary cementum?

Answer 7

acellular cementum

Question 8

describe cellular cementum

Answer 8

contains cementocytes, later formed, present in apicl part of root and in furcation regions

Question 9

what type of cementum is secondary cementum?

Answer 9

cellular cementum

Question 10

describe acellular extrinsic fibre cementum

Answer 10

collagen fibres from PDL (sharpeys fibres) , equivalent to primary cementum, present on cervical 2/3 of roots

Question 11

describe cellular intrinsic fibre cementume

Answer 11

no sharpeys fibres, intrinsic collagen fibres parallel to the surface, equivalent to secondary cellular cementum, no role in tooth attachment , may represent a transitional form