Cementum

Question 1

What does cementum cover?

Answer 1

Root dentine

Question 2

What are the 2 features of cementum that make it similar to bone?

Answer 2

1. It has a collagen matrix

2. It has a lamellar arrangement

Question 3

What cells lay down cementum?

Answer 3

Cementocytes

Question 4

What are the 2 types of cementum?

Answer 4

1. Acellular

2. Cellular

Question 5

What type is secondary cementum?

Answer 5

Cellular cementum

Question 6

What type is primary cementum?

Answer 6

Acellular cementum

Question 7

Where are extrinsic fibres found?

Answer 7

Acellular cementum

Question 8

Where are intrinsic fibres found?

Answer 8

Cellular cementum

Question 9

Where is acellular cementum found?

Answer 9

Adjacent to dentine

Question 10

Where is cellular cementum found?

Answer 10

In the apical part of root and furication regions

Question 11

What is a furication region?

Answer 11

The region between roots

Question 12

What can be said about the composition of cellular cementum?

Answer 12

Contains cementocytes

Question 13

What can be said about the composition of acellular cementum?

Answer 13

Contains NO CELLS

Question 14

What is more abundant: cellular or acellular cementum?

Answer 14

Cellular

Question 15

What is the function of cementum?

Answer 15

It provides attachment for periodontal fibres

Question 16

What are Sharpey’s Fibres and what do they do?

Answer 16

A matrix of connective tissue that connect tooth to bone

Question 17

What type of fibres are present in Sharpey’s Fibres?

Answer 17

Type 1 collagen fibres

Question 18

What type of fibre cementum contains no Sharpey’s Fibres and what does this mean for its function?

Answer 18

Intrinsic fibre cementum

-Means it plays no role in tooth attachment

Question 19

What type of fibre cementum contains Sharpey’s Fibres and where are they present?

Answer 19

Extrinsic fibre cementum

-Present on cervical 2/3 of ROOTS

Question 20

Intrinsic collagen fibres are _______ to surface

Answer 20

Parallel