Dental Anatomy

Question 1

What is the skull made up of?

Answer 1

25% water, 30 % organic material, 45% inorganic material.

Question 2

Name the 4 sutures of the skull

Answer 2

Coronal suture, sagittal suture, sqaumous suture, lamboid suture

Question 3

How many separate bones is the skull made up of?

Answer 3

22

Question 4

How many parts does the skulls consist of and what are they?

Answer 4

2 - cranium, facial skeleton

Question 5

The cranium is made up of 8 bones, what are they?

Answer 5

Frontal
2 X parietal
Occipital
2 X temporal
Sphenoid
Ethmoid

Question 6

What are the holes in the skull called?

Answer 6

Foramen - they permit passage of veins, arteries and nerves

Question 7

What nerve supplies the facial muscles?

Answer 7

7th cranial nerve

Question 8

The circular muscle surrounding the mouth is called?

Answer 8

Obicularis Oris

Question 9

The vertical groove at the midline on the outside of the upper lip is called?

Answer 9

Philtrum

Question 10

The main muscle in th cheek is called?

Answer 10

The buccinator muscle

Question 11

The ring of muscle around the eye is called?

Answer 11

Obicularis oculi

Question 12

The four muscles of mastication are?

Answer 12

Temporalis
Masseter
Lateral pterygoid
Medial pterygoid

Question 13

Every tooth consists of?

Answer 13

Crown
1 or more roots
Neck
Apex

Question 14

A tooth is composed of?

Answer 14

Enamel
Dentine
Cementum
Pulp

Question 15

Enamel is made up of?

Answer 15

96% inorganic, 4%organic material

Question 16

The pulp consists of?

Answer 16

Cells
Nerves
Blood vessels

Question 17

The jaw bone consists of?

Answer 17

Compact bone (dense outer layer)
Spongy bone (softer interior bone)
Lamina dura

Question 18

Dentine is made up of?

Answer 18

20-25% organic material

75-80% inorganic material

Question 19

Enamel and dentine meet at the cervicum margin which is known as?

Answer 19

Amelo-cementum junction