12 final

Question 1

the factors that determine the pattern of mand movement are:

Answer 1

TMJs and anterior teeth

Question 2

to maintain harmony the posterior teeth need to pass close but ________ the opposing teeth during mand movement

Answer 2

not contact

Question 3

(posterior controlling factors)
1. the angle at which the condyles move away from a horizontal reference plane is referred to as the=

2. the condylar guidance is considered to be a ______since in the healthy patient it is unalterable

Answer 3

condylar guidance angle

fixed factor

Question 4

(anterior controlling factors)

1.the ______determine how the anterior portion of the mand move

2. as the mand protrudes or moves laterally, the incisal edges of the mand ant teeth occlude with
3. the steepness of the lingual surfaces determines the amount of _______movement of the mandible

Answer 4

1. anterior teeth
2. the lingual surfaces of the max anterior teeth
3. vertical movement

Question 5

the anterior guidance is considered to be a _______rather than a fixed factor. it can be altered by:

Answer 5

variable

altered by pathologic conditions (caries, wear, dental procedures)

Question 6

we want posterior teeth to pass close to, but not contact opposing teeth during mand movement

Answer 6

superio-inferior movement (vertical component)

Question 7

the length of a cusp and the distance it extends into the depth of an opposing fossa depends on:
1
2
3

Answer 7

1. anterior controlling factor of mand movement
2. posterior controlling factor of mand movement
3. nearness of the cusp to those controlling factors

Question 8

vertical determinants control the function of the superior-inferior movement and influence the factor of:

Answer 8

cusp height and fossae depth

Question 9

horizontal determinants influence the ________on the occlusal surfaces and the _____________in the horizontal plane

Answer 9

direction of grooves and ridges

placement of the cusps

Question 10

6 vertical determinants:

Answer 10

1. curve of spee
2. condylar guidance
3. anterior guidance
4. nearness of the cusp to the controlling factor
5. plane of occlusion
6. mand lateral translation movement

Question 11

posterior controlling factors:

Answer 11

fixed factors
condylar guidance
the two TMJs

Question 12

as the mandible is protruded, the condyle descends along the articular eminence

Answer 12

condylar guidance

Question 13

angle at which the condyle moves away form the horizontal reference plane

Answer 13

condylar guidance

Question 14

when the mandible makes a __________movement, the condylar guidance angle is greater than when the mandible makes a ____ movement

Answer 14

lateral (greater)

protrusive

Question 15

the steeper the eminence:

Answer 15

1. the more the condyle must move inferiorly
2. there is greater vertical movement
3. it allows for steeper posterior cusps

Question 16

the steeper the angle of the eminence, the steeper the

Answer 16

cusps

Question 17

anterior controlling factors:

Answer 17

anterior teeth and anterior guidance

Question 18

what determines how the ant portion of mand moves

Answer 18

anterior teeth

Question 19

ant guidance is altered by:
1
2
3
4
5
6

Answer 19

1. restorations, ortho, ext, caries, habits, tooth wear

Question 20

the anterior guidance angle is formed by the intersection of the ______and the ____of the anterior teeth

Answer 20

horizontal plane

disclusive pathway

Question 21

the anterior guidance angle is influenced by

Answer 21

VO and HO

Question 22

what stays the same and which varies
HO and VO

Answer 22

HO stays the same and VO varies

Question 23

increase in VO overlap=
increase in HO overlap=

Answer 23

increase VO overlap= increases anterior guidance angle

increase HO overlap=decreases in anterior guidance angle

Question 24

increased anterior guidance angle=

Answer 24

more vertical component and allows steeper posterior cusps

Question 25

the nearer a tooth is to the TMJ, the more the joint anatomy will influence its eccentric movement and the less the ___________influences its movement

Answer 25

anterior teeth

Question 26

imaginary surface that touches the incisal edges of the incisors and cusp tips of occluding surfaces of posterior teeth

Answer 26

plane of occlusion

Question 27

as the plane of occlusion becomes more parallel to the angle of eminence, the posterior cusps may be made

Answer 27

shorter

Question 28

anteroposterior curve from the tip of the mand canine along BUCCAL cusp tips of man posterior teeth

Answer 28

curve of spee

Question 29

with a (short/long) radius, the curve will be more acute (curve of spee)

Answer 29

short = shorter cusps

Question 30

the flatter the plan of occlusion, the greater the

Answer 30

cusp height

Question 31

if curve of spee has short radius:

Answer 31

angle which mand teeth move away from max teeth will be less than long radius so cusps will need to be shorter

Question 32

if the plane of occlusion is rotated more anterior then:

Answer 32

more teeth anterior to perpendicular line and would need TALLER CUSPS

Question 33

if plane of occlusion is rotated more posterior then:

Answer 33

more teeth posterior to perpendicular lone and would need SHORTER CUSPS

Question 34

this is a bodily sideshift of the mand during lateral movements

Answer 34

mandibular lateral translation

Question 35

how much inward movement is done during mandibular lateral translation???? meaning what does this depend upon

Answer 35

1. medial wall of fossa on orbiting side 2. inner portion of TM ligament attached to lateral pole of rotating condyle

Question 36

the more medial the medial wall is from the condyle, the more

Answer 36

lateral translation movement

Question 37

the lateral translation movement is described in

Answer 37

amount timing direction

Question 38

the greater the amount of lateral translation, the _______the posterior cusps must be

Answer 38

shorter

Question 39

with the rotating condyle, laterosuperior movement requires _____posterior cusps and inferior movement requires ____cusps

Answer 39

laterosuperior movements= shorter inferior= taller cusps

Question 40

called immediate lateral translation (or immediate sideshift)

Answer 40

early translation (of condylar lateral translation)

Question 41

called progressive lateral translation (or progressive sideshift)

Answer 41

late lateral translation

Question 42

shift seen before the condyle begins to translate from the fossa

Answer 42

immediate lateral translation

Question 43

***condylar guidance-steeper the guidance

Answer 43

taller cusps

Question 44

***anterior guidance- greater VO greater HO

Answer 44

taller shorter

Question 45

***plane of occlusion- more parallel to the condylar guidance

Answer 45

shorter

Question 46

***curve of spee-more acute the curve

Answer 46

shorter cusps

Question 47

***lateral translation- greater the movement

Answer 47

shorter cusps

Question 48

***more superior movement of rotating condyle

Answer 48

shorter cusps

Question 49

***greater immediate side shift

Answer 49

shorter cusps