Root and Cementum Tissue Structure

Question 1

What determines the length of the root?

Answer 1

Growth of the epithelial root sheath

Question 2

What determines the number of roots?

Answer 2

Growth of the epithelial diaphragm

Question 3

Growth of epithelial diaphragm circumference:

Answer 3

• If it grows evenly: one root
• If two areas grow more rapidly: two roots
• If three areas grow more rapidly: three roots.

Question 4

Color and texture of cementum?

Answer 4

Yellowish

Hard

Question 5

What type of tissue is cementum?

Answer 5

Mineralized tissue

Question 6

Where is cementum found?

Answer 6

Covering the roots, beginning at the CEJ

Question 7

Composition of cementum?

Answer 7

45-50% inorganic, 50-55% organic and water

Question 8

What attaches cemtum to gingiva?

Answer 8

Periodontal fibers

Question 9

What are the hook-like ends of periodontal fibers called?

Answer 9

Sharpy’s Fibers

Question 10

What are the two types of cementum?

Answer 10

Cellular and acellular

Question 11

What is cellular cementum?

Where is it found?

Answer 11

• Cementum where cells are trapped

- Apical 1/3 of root

Question 12

What is acellular cementum?

Where is it located?

Answer 12

• Cementum where no cells are trapped

- Located on cervical 2/3 of root

Question 13

What does cementum do?

Answer 13

Provide a medium to which fibers can attach and bind the tooth to alveolar bone