Intro to the Oral Cavity

Question 1

Name each part of the oral cavity?

Answer 1

Lips, cheeks, soft/hard palate, gingivae, tongue, floor of mouth, teeth, larynx, pharynx and epiglottis

Question 2

Explain the role of the lips?

Answer 2

Used as an exploratory area in babies, and also contain salivary glands. Help to keep teeth in position

Question 3

What is the muscle surrounding the lips? and it’s function?

Answer 3

Orbicularis oris, it is very strong and counteracts the tongue’s thrust

Question 4

Why do the cheeks suffer less infection than the teeth?

Answer 4

Due to desquamation, as bacteria can stick onto the surface of teeth

Question 5

What is the oral mucosa?

Answer 5

The lining of the mouth

Question 6

What is the gingivae?

Answer 6

The part of the oral mucosa covering the bone

Question 7

Name the parts of the gingivae?(free and attached)***

Answer 7

Gingival sulcusFree gingivaFree gingival grooveAttached gingivaMucogingival junctionAlveolar mucosa

Question 8

Where is the hard palate located?

Answer 8

Roof of the mouth (towards the front)

Question 9

What is the function and location of the rugae?

Answer 9

apart of the hard palate.for mastication and suckling in infants

Question 10

Where is the soft palate located?

Answer 10

Roof of the mouth (towards the back)

Question 11

Name the part associated with the soft palate and the function of the palate?

Answer 11

Uvula (raised and lowered for speech)Important for swallowing

Question 12

The functions of the tongue?

Answer 12

Fills space bounded by teeth when mouth closedTaste buds for taste

Question 13

What is the cord called underneath the tongue?

Answer 13

The Frenulum

Question 14

What does the floor of the mouth mainly contain?

Answer 14

Major salivary glands and blood vessels (covered by a thin epithelium)

Question 15

The structural role and function of the pharynx?

Answer 15

Makes up the posterior wall of the oral cavityActive in the digestive and respiratory processes

Question 16

What is the anatomical crown?

Answer 16

The part of the tooth that is covered by enamel.

Question 17

What is the clinical crown?

Answer 17

The part of the tooth that is clinically visible.

Question 18

What are the surfaces of the teeth?

Answer 18

MesialDistalBuccalLingualPalatalOcclusal

Question 19

What surface faces towards the cheek?

Answer 19

Buccal

Question 20

What surface contacts the opposing teeth in the jaw?

Answer 20

Occlusal

Question 21

What surface faces towards the tongue?

Answer 21

Lingual

Question 22

What surface faces towards the palate?

Answer 22

Palatal

Question 23

What surface faces towards the midline?

Answer 23

Mesial

Question 24

What surfaces faces away from the midline?

Answer 24

Distal

Question 25

What is the biting edge of a incisor called?

Answer 25

Incisal edges

Question 26

What is the name of the part of the crown nearest to the gum called?

Answer 26

Cervical margin

Question 27

What are the 4 types of teeth?

Answer 27

Incisors, canines, premolars and molars

Question 28

What is the function of incisors?

Answer 28

Slicing or incising

Question 29

What is the function of the canines?

Answer 29

Tearing

Question 30

What is the function of the premolars and molars?

Answer 30

Grinding and mashing

Question 31

What are the basic components of teeth?

Answer 31

Enamel, dentine and pulp

Question 32

Where is the enamel found?

Answer 32

Covers the crown of the tooth

Question 33

What is the hardest tissue in the body?

Answer 33

Enamel

Question 34

What makes the enamel perfect for its role?

Answer 34

It has no blood or nerve supply (non-vital)

Question 35

How is enamel formed

Answer 35

Amelogenesis

Question 36

What is the 2nd layer of the tooth?

Answer 36

Dentine

Question 37

How does the Dentine and Enamel differ?

Answer 37

Mineralised and has a blood and nerve supplyCapable of growth and repairCovers the root surface

Question 38

How is the dentine formed?

Answer 38

Dentinogenesis

Question 39

What is the pulp?

Answer 39

A mass of blood vessels and nerves which make up centre of tooth.

Question 40

What is the pulp connected to?

Answer 40

Connect with the major nerves and vessels of the head and neck.

Question 41

The name given to inflammed pulp?

Answer 41

Pulpitis

Question 42

What is the periodontium, and its associated structures

Answer 42

It surrounds the tooth and consists of 4 structures:GingivaPeriodontal ligamentAlveolar boneCementum

Question 43

What is the function of the periodontium?

Answer 43

Attachment of teeth to the jaws.Effective support during masticatory function

Question 44

Signs of healthy gingiva?

Answer 44

Firm, pale pink and stippledWith no blood on probing

Question 45

What is the function of the gingiva?

Answer 45

Provides attachment between the oral mucous membrane & the teeth.Prevents bacterial invasion of the underlying periodontal tissues.

Question 46

Where is the periodontal ligament found?

Answer 46

Between the cementum and the alveolar bone

Question 47

What is the periodontal ligament formed from?

Answer 47

Specialized vascular connective tissue.Fibrous attachment of the tooth (collagen based).

Question 48

What is the function of the periodontal ligament?

Answer 48

Gives functional adaptation of the tooth in the bony socket under functional demands.

Question 49

Ageing's affect on the periodontal ligament?

Answer 49

Progressively decreases in width with age,also changes with functional demands and any pathological process

Question 50

What is the cementum?

Answer 50

A specialized, calcified connective tissue that covers the anatomic root of a tooth, giving attachment to the periodontal ligament. Derives nutrition from the ligament

Question 51

What is the alveolar bone and its function?

Answer 51

Specialised bone that supports the teeth. Develops with the dentition and resorbs with loss of the dentition.