Teeth and its supporting tissue

Question 1

protective covering for the crown of the
teeth

Answer 1

Enamel

Question 2

cells responsible for enamel formation

Answer 2

Ameloblasts

Question 3

The apatite crystals within enamel pack together differentially to create a structure of enamel rods separated by an _________.

Answer 3

Interrod Enamel

Question 4

Supports the enamel and compensates for it’s brittleness

Answer 4

Dentin

Question 5

Most mineralized tissue in the body * 96% inorganic material (APATITE
CRYSTALS AND TRACES OF ORGANIC MATERIAL)

Answer 5

Enamel

Question 6

– 45% hydroxyappatite crystals
– 33 % organic material
– 22% water

Answer 6

Dentin

Question 7

Area of the tooth that holds the
blood vessels and nerves.

Answer 7

Pulp

Question 8

produces the dentin that surrounds it.

Answer 8

Formative

Question 9

nourishes the avascular dentin

Answer 9

Nutritive

Question 10

carries nerves that give dentin its sensitivity

Answer 10

Protective

Question 11

capable of producing new dentin when required.

Answer 11

Reparative

Question 12

highly specialized
connective tissue situated
between the tooth and
the alveolar bone

Answer 12

Periodontal ligament (PDL)

Question 13

covers the roots of the
teeth and is interlocked
firmly with the dentin of the
root

Answer 13

Cementum

Question 14

– 45 to 50% inorganic
(hydroxyappatite)
– 50 to 55% organic matrix
(largely collagen)

Answer 14

Cementum

Question 15

Mucous
membrane that
lines the oral
cavity

Answer 15

Oral Mucosa

Question 16

Two layers of Oral Mucosa?

Answer 16

Epithelium and Lamina Propria

Question 17

covers gingiva and hard palate

Answer 17

Masticatory

Question 18

lips and cheeks

Answer 18

Lining

Question 19

covers the dorsal surface of the tongue

Answer 19

Specialized