Q1-Major Functions of the Masticatory System

Question 1

To close tight, as to bring the mandibular teeth into contact with the teeth in the maxilla

Answer 1

occlude

Question 2

4 functions of the masticatory system

Answer 2

1. mastication
2. swallowing
3. speech
4. respiration and expression

Question 3

True or False

All functional movements are not highly coordinated

Answer 3

False; they ARE highly coordinated

Question 4

Teeth, periodontal ligaments, lips, tongue, cheeks and palate all make up the ______ input

Answer 4

sensory

Question 5

The sensory input is integrated in the ______ _____ ______

Answer 5

central pattern generator (CPG)

Question 6

A pool of neurons that controls rhythmic muscle activity and is responsible for the precise timing of activity between antagonistic muscles so that specific function can be carries out

Answer 6

central pattern generator (CPG)

Question 7

chewing stroke

Answer 7

mastication

Question 8

Mastication is the ________ control separation and closure of teeth, under control of the ______, _____-shaped in movement, closing movement in 2 phases; ______ and _______

Answer 8

rhythmic
CPG
tear
crushing and grinding

Question 9

As the teeth approach each other, the ______ displacement is lessened

Answer 9

lateral

Question 10

Incisors are slightly _____ to intercuspal position at opening and returns from a posterior position

Answer 10

anterior

Question 11

The first molar traced on the side the mandible moves (working side); the molar is slightly ______ at opening and _______ at closing

Answer 11

anterior

posterior

Question 12

The chewing stroke on the non-working side; the first molar drops from IP vertically with (little/a lot) movement, the final stage of closing stroke is almost ________; the condyle moves _______ during opening and follows the same pathway on its return

Answer 12

little/no
vertical
anteriorly

Question 13

During chewing stages;

1. the mandible moves _____ during incising
2. less/more forward movement needed after incision of food
3. ______ of food is concentrated on posterior teeth
4. movement of the ________ in the saggital plane varies according to the side the person is chewing
5. _______ movement of the mandible relates to the stage of mastication
6. great ______ movement when food is initially introduces in the mouth and less as food is broken
7. lateral movement varies according to _____ _____

Answer 13

1. forward
2. less
3. crushing
4. 1st mandibular molar
5. lateral
6. lateral
7. food consistency

Question 14

Cusps in children are _____ resulting in more pronounced lateral movement

Answer 14

steeper

Question 15

______ food creates broader chewing strokes; chewing ______ produces a wider chewing stroke

Answer 15

harder (carrot)

gum

Question 16

The majority of people chew with one side; the side with ______ tooth contacts

Answer 16

greater

Question 17

few/many contacts occur during the initial stage of mastication; there is an _______ of tooth contacts as food is broken down

Answer 17

few

increase

Question 18

Two types of contacts; ______ and ______

Answer 18

gliding

single

Question 19

Occurs as cuspal inclines pass each other during opening and grinding

Answer 19

gliding contact

Question 20

occurs in maximum intercuspal position (MI)

Answer 20

single contact

Question 21

True or False

tooth position dictates where the condyle lays

Answer 21

true

Question 22

Tall cusps and deep fossa promote predominately _____ chewing stroke

Answer 22

vertical

Question 23

flattened or worn teeth promote a ________ chewing stroke

Answer 23

broader

Question 24

If posterior contacts in undesirable lateral movement, the malocclusion produces an _____ and less ______ chewing stroke

Answer 24

irregular

repeatable

Question 25

True or False

Men and Women have roughly the same bite force

Answer 25

False; men bite with more force

Question 26

The maximum biting force is reported at _____ pounds

Answer 26

975 lbs

Question 27

the molars can take ______ more force than the incisors

Answer 27

3x (more root/muscle support)

Question 28

biting force increases with _______ and ______

Answer 28

age

practice

Question 29

greatest amount of force during mastication is places on the ______ _____ and ____ ____ areas

Answer 29

2nd premolar

1st molar

Question 30

subjects with complete dentures can only apply _____ the biting force than subjects with natural teeth

Answer 30

1/4th

Question 31

True or False

soft tissue doesn’t impact mastication

Answer 31

false; soft tissue play an important role during mastication

Question 32

______ guide and control the intake of food and seal the oral cavity

Answer 32

lips

Question 33

_____ is used to taste and maneuver the food within the oral cavity, also sweeps the teeth

Answer 33

tongue

Question 34

_____ like the ______ help position the bollus of food in the surfaces of the teeth

Answer 34

muscles

buccinator

Question 35

A series of coordinated muscular contractions that moves a bolus of food from the oral cavity through the esophagus to the stomach

Answer 35

swallowing

Question 36

during swallowing teeth come together into maximum intercuspation to stabilize the mandible in order for the supra hyoid and infra hyoid muscles to contract and control proper movement of the hyoid in order to swaller

Answer 36

somatic swallow

Question 37

occurs in infants (no posterior teeth) and adults with no teeth; the mandible is braced by placing the tongue forward and between the dental arches or gum pads

Answer 37

visceral swallow

Question 38

tooth contact occurs _____ times longer during swallowing than during mastication

Answer 38

three

Question 39

the force applied on teeth during swallowing is ________ than during mastication

Answer 39

stronger

Question 40

swallowing occurs about _____ times during a 24/hr period

Answer 40

590

Question 41

“____” sound is used to evaluate the amount of incisal display at rest

Answer 41

“M”

Question 42

“___” or “____” sound = length of central incisors and lingual tilt of incisal third

Answer 42

“F” or “V”

Question 43

“___” sound = closest speaking space where the incisal and occlusal surfaces of teeth don’t touch

Answer 43

“S”