Ch 3- Dental Odontology

Question 1

Mesial

Answer 1

Toward the point on midline where incisors contact each other

Question 2

Distal

Answer 2

Away from point on midline where central incisors contact each other

Question 3

Lingual

Answer 3

Toward the tongue

Question 4

Labial

Answer 4

Toward the lips (for anterior teeth)

Question 5

Buccal

Answer 5

Toward the cheeks (for posterior teeth)

Question 6

Interproximal

Answer 6

In contact with adjacent teeth in the same jaw

Question 7

Occlusal

Answer 7

Facing the opposite dental arch, usually the chewing surface

Question 8

Incisal

Answer 8

The biting or occlusal edge of incisors

Question 9

Mesiodistal

Answer 9

Axis running from medial to distal

Question 10

Crown

Answer 10

Exposed part of tooth covered by enamel

Question 11

Cervix (neck)

Answer 11

Between crown and root

Question 12

Root

Answer 12

Part in alveolus, covered by cementum

Question 13

Cusp

Answer 13

Conical point on crown

Question 14

Enamel

Answer 14

• Covers crown
• hardest tissue
• 97% hydroxyapatite

Question 15

Dentine

Answer 15

Bulk of tooth, underlies enamel and cementum

Question 16

Cementum

Answer 16

• Covers root

- attaches to periodontal ligament

Question 17

Tooth class: incisors

Answer 17

• Spatulate teeth in front of jaws

- cut, nip or hold food/other objects

Question 18

Tooth class: canines

Answer 18

Conical teeth for piercing and holding

Question 19

Tooth class: premolars (bicuspids)

Answer 19

Grinding/crushing teeth

Question 20

Tooth class: molars

Answer 20

Large surface area for grinding/crushing

Question 21

Tooth classes by stage: permanent dentition

Answer 21

32

• incisors (8)
• canines (4)
• premolars (8)
• molars (12)

Question 22

Tooth classes by stage: deciduous dentition

Answer 22

20

• incisors (8)
• canines (4)
• molars (8)