5-1 articulation landmarks

Question 1

oral cavity

Answer 1

boundaries = teeth (anterior & lateral)
faucial pillars (posterior)

oropharyngeal isthmus

Question 2

faucial pillars

Answer 2

posterior – palatopharygeous
anterior – palatoglossus

Question 3

oropharyngeal isthmus

Answer 3

narrowing in vocal tract between the faucial pillars

space between oral & pharyngeal cavities

Question 4

buccal cavity

Answer 4

space between teeth & cheeks

Question 5

philtrum

Answer 5

groove between base of nose & upper lip

Question 6

vermilion border

Answer 6

transition space between skin of face & lips

Question 7

tooth anatomy

Answer 7

crown - part we see
neck
root - anchors tooth to mandible or maxillae, can’t see

tooth is attached to bone, within in alveolus, by connective tissue - periodontal ligament

Question 8

what covers the crown of the tooth

Answer 8

enamel

hardest structure of the body
resist attrition & abrasion

Question 9

what covers the root of the tooth

Answer 9

cementum

bone-like substance

Question 10

what makes up the solid portion of a tooth

Answer 10

dentin

hard & mineralized tissue
softer than enamel

Question 11

pulp of tooth

Answer 11

rich in nerve & blood vessels

Question 12

medial (or mesial) surface

Answer 12

surface looking along the arch toward to the mid-point of central incisors

Question 13

distal surface

Answer 13

farthest from the mid point

Question 14

lingual surface

Answer 14

surface facing tongue

Question 15

buccal (or labial) surface

Answer 15

comes in contact w/ buccal wall (or lips)

Question 16

occlusal surface

Answer 16

surface between teeth of upper & lower arches

Question 17

incisors

Answer 17

responsible for biting off food
large crowns
single roots

Question 18

canines/cuspids

Answer 18

responsible for piercing & cutting food
single roots

Question 19

premolars/bicuspids

Answer 19

responsible for cutting & shearing food
2 cusps on occlusal surface
not present in deciduous teeth
1 or 2 roots

Question 20

molars

Answer 20

large teeth w/ large occlusal surfaces
responsible for crushing & pulping food – mixing w/ salivary enzymes
variable number of cusps & roots (2+)

Question 21

baby teeth

Answer 21

decidous
20 teeth

Question 22

adult teeth

Answer 22

permanent
32 teeth

Question 23

successional teeth

Answer 23

teeth that fall out & then grow back

Question 24

superadded teeth

Answer 24

new teeth (premolars & molars)

Question 25

class I malocclusion

Answer 25

jaw in the right place, teeth are crooked
braces

Question 26

class II malocclusion

Answer 26

overbite
headgear or surgery to change shape of jaw

Question 27

calass III malocclusion

Answer 27

underbite
headgear or surgery to change shape of jaw
sometimes have to break the mandible

Question 28

midline spetum

Answer 28

divides the left & right portions of the tongue

vertical layer of fibrous tissue in the tongue midline

Question 29

extrinsic tongue muscles

Answer 29

move the tongue into general desired region

Question 30

intrinsic tongue muscles

Answer 30

shape the tongue

provide fine control of articulatory movements

Question 31

lingual frenulum

Answer 31

band of tissue running from inner mandibular mucosa to the underside of the tongue

ankyloglossia – tongue tie – limited tongue mobility