cementum

Question 1

what is cementum?

Answer 1

Thin layer of calcified tissue covering entire root surface

Question 2

how is cementum developed
?

Answer 2

the Hertwig’s Sheath disintegrates
Mesenchymal cells come into contact with dentine > cementoblasts

Question 3

what do cementoblasts do?

Answer 3

lay down layers of cementum

Question 4

what is the composition of cementum?

Answer 4

45% inorganic matrix -calcium Hydroxyapatite

55% Organic matrix- thin collagen fibres

Question 5

collagen fibres of the periodontal ligament which are inserted into the cementum are called?

Answer 5

Sharpeys fibres

Question 6

two types of cementum exist called?

Answer 6

Acellular cementum – does not contain cells

Cellular cementum – contains (cells)

Question 7

Each cementocyte lies in a cavity what?

Answer 7

Lacuna

Question 8

Chronic periapical inflammation can result in abnormally thickened cementum called?

Answer 8

Hypercementosis

Question 9

cementum is divided into two types what are they called?

Answer 9

Acellular
Cellular

Question 10

the cells found in cellular cementum are?

Answer 10

cementocytes

Question 11

what cavities do cementocytes lie in?

Answer 11

lacunae

Question 12

what is the name given to the portions of the periodontal fibres embedded in cementum?

Answer 12

sharpeys fibres

Question 13

give the name for abnormally thickened cementum?

Answer 13

hypercementosis