Articulation And Occlusion Lecture 7

Front 1

*What are the 7 requirements of optimum occlusion?

Back 1

1. Both the right and left condyles are in a supero-anterior position in fossae.

2. The articular disc is properly interposed.

3. There is even and simultaneous contact of all teeth.

4. Lighter contacts occur on the anterior teeth than on the posterior.

5. Occlusal forces are directed down long axis of teeth.

6. During laterotrusive movement, the mediotrusive side is discluded immediately.

7. During protrusive movement, all the posterior teeth are discluded immediately.

Front 2

What is another name for the Kinematic axis?

Back 2

True horizontal axis (hinge axis)

Front 3

What is another name for the True horizontal axis?

Back 3

Kinematic axis (hinge axis)

Front 4

What is another name for the Selected axis?

Back 4

Arbitrary axis

Front 5

What is another name for the Arbitrary axis?

Back 5

Selected axis

Front 6

An error of ≤ __ mm in the location of the horizontal (hinge) axis results in a variation of only ≤ __mm in the anterior posterior position of the mandible

Back 6

5mm, 0.2mm

Front 7

What % of selected or arbitrary horizontal (hinge) axises will be within 6mm of the TRUE horizontal (hinge) axis?

Back 7

56.4%

Front 8

56.4% of selected or arbitrary horizontal (hinge) axises will be within __mm of the TRUE horizontal (hinge) axis?

Back 8

6mm

Front 9

A TRUE horizontal (hinge) axis location is (required/tolerable) when increasing the vertical dimension of a patient

Back 9

required

Front 10

A TRUE horizontal (hinge) axis location is required when increasing the _____ dimension of a patient

Back 10

vertical

Front 11

What tool is used to mount the maxillary cast on the maxillary component of the articulator at a distance from the centers of rotation of the condyles that is identical to that distance on the patient?

Back 11

face-bow

Front 12

What is required to relate the maxillary diagnostic cast to the articulator?

Back 12

reference plane

Front 13

What are the three main reference points on our face-bows?

Back 13

1. Right condyle
2. Left condyle
3. Nasion

(Note: 1 and 2 can also be L and R external auditory meatus... 3 is just any anterior reference point, but we use the nasion)

Front 14

One of the three reference points on any facebow is an arbitrary anterior reference point. For our Whipmix facebows, what is this point?

Back 14

The nasion

Front 15

The purpose of the ____ is to accurately reproduce the patient's mandibular movement without the patient present

Back 15

articulator

Front 16

What are the 3 main uses of the articulator, as presented in class?

Back 16

Diagnostic
Treatment planning
Treatment

Front 17

At the OUCOD, we use this kind of articulator:

A. non-adjustable
B. semi-adjustable
C. fully adjustable

Back 17

B. semi-adjustable

Front 18

Which of these reproduces the vertical dimension only?

A. non-adjustable
B. semi-adjustable
C. fully adjustable

Back 18

A. non-adjustable

Front 19

The non-adjustable articulator only reproduces the ____ dimension

Back 19

vertical

Front 20

A non-adjustable articular would be good for creating ___ in what teeth?

Back 20

single crowns, 2nd and 3rd molars

Front 21

If you do a facebow transfer from a patient to an articulator, you typically need about __ minutes of occlusion adjustment to get it correct

Back 21

3 minutes

Front 22

semi-adjustable articulators use which type of horizontal axis?

A. Kinematic
B. True
C. Selected
D. Arbitrary

Back 22

C and D, they mean the same thing! (note: A and B are the same as well but are not used on the semi-adjustable articulators)

Front 23

Determine if the following statements are True or False:

1. our facebows do not insert directly onto the condyle, rather just behind it

2. The operator must compensate for the face that our facebows do not rest on the condyle itself

3. The facebow ear pieces can either be place inside of the ear or over the patients face where the operator thinks the condyle is

Back 23

1. True
2. False, the facebow compensates itself
3. False, can ONLY be placed inside of the ear

Front 24

All facebows require how many reference points?

Back 24

3

Front 25

When taking a bite impression with a facebow, you must make sure you get a (maxillary/mandibular) impression, but a (maxillary/mandibular) impression is not necessary

Back 25

maxillary, mandibular

Front 26

The (maxillary/mandibular) impression is the only impression you need when doing a facebow record

Back 26

maxillary

Front 27

After you take wax records, you should:

A. Dry completely after you take it out of the patient's mouth and place in a closed bag
B. Dry completely after you take it out of the patient's mouth and place in a open bag
C. Disinfect and place in a closed bag
D. Disinfect and place in an open bag
E. Either C or D will work equally well

Back 27

D. Disinfect and place in an open bag (open bag because we don't want moisture to collect on the device and produce mold)

Front 28

When taking a horseshoe protrusion impression, the patient must protrude about __ to __mm from what position?

Back 28

5-6mm from intercuspal position

Front 29

Under what three circumstances will we NOT take a protrusive record?

Back 29

If the patient has:

1. no posterior teeth
2. a class III occlusion
3. a pair of lone standing occluding molars

Front 30

semi-adjustable articulators use which type of horizontal axis?

A. Kinematic
B. True
C. Selected
D. Arbitrary

Back 30

C and D, they mean the same thing! (note: A and B are the same as well but are not used on the semi-adjustable articulators)

Front 31

The facebow record is made with the patient in what position?

Back 31

sitting or reclining

Front 32

Determine if the following statements are True or False:

1. our facebows do not insert directly onto the condyle, rather just behind it

2. The operator must compensate for the face that our facebows do not rest on the condyle itself

3. The facebow ear pieces can either be placed inside of the ear or over the patients face where the operator thinks the condyle is

Back 32

1. True
2. False, the facebow compensates itself
3. False, can ONLY be placed inside of the ear

Front 33

The protrusive record is made with the patient in what position?

Back 33

horizontal

Front 34

All facebows required how many reference points?

Back 34

3

Front 35

When taking a bite impression with a facebow, you must make sure you get a (maxillary/mandibular) impression, but a (maxillary/mandibular) impression is not necessary

Back 35

maxillary, mandibular

Front 36

The (maxillary/mandibular) impression is the only impression you need when doing a facebow record

Back 36

maxillary

Front 37

After you take wax records, you should:

A. Dry completely after you take it out of the patient's mouth and place in a closed bag
B. Dry completely after you take it out of the patient's mouth and place in a open bag
C. Disinfect and place in a closed bag
D. Disinfect and place in an open bag
E. Either C or D will work equally well

Back 37

D. Disinfect and place in an open bag (open bag because we don't want moisture to collect on the device and produce mold)

Front 38

When taking a horseshoe protrusion impression, the patient must protrude about __ to __mm from what position?

Back 38

5-6mm from intercuspal position

Front 39

Under what three circumstances will we NOT take a protrusive record?

Back 39

If the patient has:

1. no posterior teeth
2. a class III occlusion
3. a pair of lone standing occluding molars

Front 40

The facebow record is made with the patient in what position?

Back 40

sitting or reclining

Front 41

The protrusive record is made with the patient in what position?

Back 41

horizontal

Front 42

Under which of these curcumstance is it ok to go ahead and take a protrusive movement record? (multiple answers)

A. patient is class II
B. patient has no posterior teeth
C. patient has a pair of lone standing occluding molars
D. patient is missing their canines
E. patient has had their 3rd molars extracted, but all other teeth are intact
F. patient is class III
G. patient has a cross-bite

Back 42

The following are ok:

A. patient is class II
D. patient is missing their canines
E. patient has had their 3rd molars extracted, but all other teeth are intact
G. patient has a slight cross-bite

The following would NOT be given a protrusive record:

B. patient has no posterior teeth
C. patient has a pair of lone standing occluding molars
F. patient is class III

Front 43

You are assisting and the dentist tells you to place the patient in the reclined position. He is about to do a (facebow/protrusive) record

Back 43

facebow