Denture Testbank For Midterm 1

Front 1

Centric occlusion is?

Back 1

The occlusion of opposing teeth when the mandible is in centric relation

Front 2

On the maxillary cast, to locate to approximate position of the tip of the canine a line is drawn passing ___________ the incisive papilla

Back 2

through the posterior border of

Front 3

T/F
In setting the upper anterior central incisor tooth, the long axis and the orientation of the tooth in wax should coincide

Back 3

True

Front 4

T/F
When the upper cuspid tooth is set in wax and you view it from the anterior, you should be able to see the entire facial portion

Back 4

False

Front 5

In setting the lower anterior teeth in the wax occlusal rim the term IMG is often used. This refers to:

Back 5

Incisal-Middle-Gingival

Front 6

When setting monoplane teeth, the condylar elements need to be set at:

a. 2
b. 3.5
c. 0
d. 1

Back 6

0

Front 7

Another word for horizontal overlap is?

Back 7

Overjet

Front 8

How do you determine the size of the lower posterior teeth to be used?

Back 8

Measure the distance from the distal of the cuspid to the "up-turn" of the ridge

Front 9

T/F
When setting the lower posteriors for a monoplane set-up, they do not need to intercuspate in any particular way.

Back 9

True

Front 10

When setting the maxillary posterior teeth for a monoplane set up, there should be a horizontal overlap of about 1-1.5 mm. The reason for this is?

Back 10

To prevent cheeck biting

Front 11

T/F
When a monoplane denture set up is completed and the articulator is manipulated to move the teeth in the excursive movements, i.e. R & L laterally and protrusive, ALL the teeth should contact with the plane of occlusion.

Back 11

False

Front 12

Wax occlusion rims are used to establish:

Back 12

1. Level of the occlusal plane
2. The arch form
3. Preliminary maxillo-mandibular records

Front 13

The best guide to design the arch form of the WOR is:

Back 13

1. Consider the pattern of bone resorption where the teeth were lost

2. Use anatomical landmarks that are relatively stable in position

Front 14

In the mandible, where does the greater portion of bone loss occur after removal of the teeth?

Back 14

Labial side of the Anterior Residual ridge

Front 15

What can be used as a guide to determine the approximate location of the canines and 1st premolars in the mandible?

a. corners of the mouth
b. canieolis
c. both of the above

Back 15

a. corners of the mouth

Front 16

What is the modioulus?

Back 16

The meeting place at the corner of the mouth of 8 muscles

Front 17

Where does the bone resorption usually occur in the maxillary arch?

Back 17

Labial & buccal areas of the residual ridge

Front 18

What landmark in the maxilla appears to remain stable after teeth are lost?

Back 18

Incisive papilla

Front 19

In replacing the maxillary teeth, where should they be positioned to simulate the normal tooth position?

Back 19

Labial to the ridge for the Anteriors and Over the ridge for the posteriors

Front 20

The incisive papilla is said to remain stable even after the teeth are removed and therefore is used as a guide to locate the anteroposterior position of the?

Back 20

Maxillary anterior teeth

Front 21

In using the papilla as a guide to position the maxillary anterior teeth, the incisal edge of the central incisors are usually ___ mm anterior to the center of the papilla.

Back 21

8-10 mm

Front 22

In constructing the WOR, how do you judge the amount of vertical measurement for each rim as a starting point?

Back 22

Use 40 mm between the periphery of the flanges in the lateral incisor region

Make each rim an average of 20 mm high (22 on max 18 on mand)

Front 23

The Fox plane and the interpupillary line is used to establish?

Back 23

Incisal plane of the maxillary WOR

Front 24

On the mandible, a landmark that is relatively stable even after advanced ridge loss is?

Back 24

The retromolar pad

Front 25

T/F
Marking the retromolar pads 1/2 - 2/3 of the height of the pad helps to determine the height of the distal end of the occlusal plane.

Back 25

True

Front 26

T/F
There are several tests to establish the correct VDO. One of these is the observation of the S sound and speaking space when the WOR are in place.

Back 26

True

Front 27

T/F
Speaking space and the interocclusal space between VDR & VDO is the same.

Back 27

False

Front 28

In constructing complete dentures for a patient, an articulator is used to simulate the jaw movements. The type of articulator that is recommended is a semi-adjustable one. It requires several jaw relations to be transferred from the patient to the instrument. They are?

Back 28

Facebow
VDO determination
Horizontal relation of upper and lower jaw in CR
Protrusive relation

Front 29

What kind of interocclusal record do we make?

a. static
b. graphic
c. functional

Back 29

Static Interocclusal Record

Front 30

It seems like each department of dentistry has it's own definition of centric relation. However, they all seem to agree on one thing. It is?

Back 30

Determined by the TMJ structures and not by the dentition

Front 31

The fovea palatinae is located:

a. Near the middle of the palate
b. Always in the hard palate
c. At the edge of the vibrating line
d. None of the above

Back 31

d. none of the above

Front 32

T/F
The vibrating line is a well-defined line demarking the end of the hard palate

Back 32

False

Front 33

The Pterygomaxillary notch is also called?

Back 33

The hamular notch

Front 34

After the triad dental base is marked for the outline of the vibrating line, trimmed to this line and placed back on cast, this line is marked on the cast. How far laterally should this PPS line extend beyond the crest of the hamular notch?

Back 34

3 mm

Front 35

T/F
When reconstructing the dental apparatus, there is always an alteration of the structures that produce sound. This disturbance of the system is called an articulatory deficit and can be classified into 3 categories: Omission of a phoneme, Substitutions, & Distortions

Back 35

True

Front 36

Which dysfunction is the most usual consequence after prosthetic treatment?

Back 36

Distortions

Front 37

When adapting to complete dentures, speech production is altered, but usually patients will adapt within 2-4 weeks. Impaired hearing can cause a problem because of the alteration of this feedback system.

Back 37

True

Front 38

T/F
Speech production can be used as a guide to position prosthetic teeth. However, not all sounds are affected by tooth positions, primarily it is the interrelationship of the tongue, teeth, denture base and lips

Back 38

True

Front 39

There are six different classifications of sound production, i.e. bilabial sounds, etc. How many of these classes are affected by the position of the teeth?

Back 39

5

Front 40

T/F
An example of biliabial sounds are the letters B, P, & M

Back 40

True

Front 41

T/F
Several things can affect the bilabial sounds such as insufficient support of the lips by the teeth caused by improper anteroposterior position of the anterior teeth, thickness of the labial flange and incorrect VDO.

Back 41

True

Front 42

T/F
The F & V sounds are classed as linguodental sounds

Back 42

False Labiodental sounds

Front 43

T/F
The F & V sounds are made when the upper anterior teeth touch the lower lip. If the teeth are too short, the V sound will be more like and F.

Back 43

True

Front 44

More important than these sounds is the relationship of the incisal edges to the lower lip. They should touch the lower lip where?

Back 44

The labiolingual center to the posterior 1/3 of the lip

Front 45

T/F
If the upper anteriors touch the lower lip in the wrong place, it could mean either the upper anteriors or the lower anteriors are incorrectly positioned

Back 45

True

Front 46

T/F
Linguodental sounds mean those sounds made by the tongue touching the teeth, such as this, that, these, those

Back 46

True

Front 47

The average amount of the tip of the tongue that is visible when making linguodental sounds is?

Back 47

3 mm

Front 48

Linguoalveolar sounds and labiodental sounds are T,D,S,Z,V,L and are produced with the tip of the tongue contacting the most anterior part of the palate or the lingual side of the anterior teeth. The important thing here is the relationship of the upper and lower anterior teeth to each other. They should:

Back 48

Approach end-to-end but NOT touch

Front 49

T/F
The objectives of an impression are to provide support, retention, and stability for the denture.

Back 49

False

Front 50

T/F
We use alginate to make the preliminary impressions. It is a thermoplastic material.

Back 50

False
Alginate is an irreversible hydrocolloid
Impression compound is a thermoplastic material with a high viscosity

Front 51

Preliminary impressions are poured in what kind of Gypsum product?

Back 51

Type II

Front 52

After filling the impression w/plaster, in order to obtain an adequate base or thickness, moreplaster should be mixed, a pad of this made and the impression flipped onto it immediately. Any excess can be trimmed

Back 52

False

Front 53

There are 2 types of alginate used...Fast set and regular set. The setting time for fast set is:

Back 53

1-2 min

Front 54

In constructing a custom impression tray, wax is placed over the preliminary cast before the tray is made. This is done because?

Back 54

It creates space for the impression material

Front 55

One of the components of the custom impression tray is a handle, in order to aid in placing and retrieving the impression. It may sound silly to be so picky about its placement and dimensions, but the reason for doing so it?

Back 55

In order not to distend the lips and therefore distort the impression

Front 56

The main support for the lower denture is?

Back 56

The buccal shelf

Front 57

Border molding can be done with several different materials, including a thermoplastic material called stick compound. Thermoplastic means?

Back 57

Heat softens, cold hardens

Front 58

The border molding material should not extend over onto the intaglio (inside) surface of the impression tray except in one area. That area is?

Back 58

Posterior palatal area

Front 59

After making the final impression, the master cast is made. Before pouring it, it is recommended to bead and box the impression. What is the reason for doing this?

Back 59

To create a land area for the final cast and to allow for an adequate base to be produced

Front 60

Before making the final impression, your custom tray is border molded. What is the purpose for doing this?

Back 60

To capture the depth of the vestibule both maxillary and mandibular and the sulcus end of mandibular impression

Front 61

What type of gypsum product should be used to pour your final impression?

Back 61

Type III (microstone)

Front 62

When border molding the impression tray, the border molding material should not be allowed to stay on the intaglio (inside) surface except in one area. That area is?

Back 62

The posterior palatal seal area

Front 63

One of the most important areas to capture in the upper impression is the posterior palatal seal area. What is the PPS?

Back 63

It is the area on the posterior part of the maxillary denture that has a positive shape onto the palate and looks like a cupids bow

Front 64

Name 3 functions of the posterior palatal seal

Back 64

Decreases atmospheric pressure
Increases retention
Keeps food from entering into the denture

Front 65

The extent of the PPS is defined by the type of throat form. Which type is most favorable to work with and why?

Back 65

Type I, because the throat goes back at an obtuse angle allowing for the posterior vibrating line to be 4-5 mm beyond the fovea palatinae

Front 66

The posterior extent of the PPS is defined by?

Back 66

Posterior vibrating line from hamular notch to hamular notch

Front 67

One guideline as to the location of the PPS area is the fovea paltinae. This landmark is found on the?

Back 67

Soft Palate

Front 68

What is the difference between an Arcon and non-Arcon articulator?

Back 68

Arcon has the temporomandibular fossa element as part of the upper apparatus

An articulator with the equivalent condylar guides fixed to the upper member and the hinge axis to the lower member, an instrument that maintains a constant relationship between the occlusal plane and the arcon guides at any position of the upper member, thereby making possible more accurate reproductions of mandibular movements.



Non-Arcon has the temporomandibular fossa element as part of the lower apparatus

Front 69

T/F
There are five classes of articulators

Back 69

False
4 classes
Class I- a simple holding instrument capable of accepting a single static registration; vertical motion is possible (e.g .non-adjustable)
Class II-an instrument that permits horizontal as well as vertical motion;
but does not orient the motion to the temporomandibular joints
Class III-an instrument that simulates condylar pathways by using averages or mechanical equivalents for all or part of the motion
Class IV-an instrument that will accept three dimensional registrations; allows for
orientation of the casts relative to the joints and simulation of mandibular movements

Front 70

When we transfer the relationship of the maxilla in the patient's head to an articulator, we can use a facebow, or an earbow or a kinematic facebow. We use an earbow. What does it register?

Back 70

The external auditory meatus & the nasion in reference to the maxillary dentition in a HORIZONTAL PLANE OF REFERENCE

Front 71

In making the final impression of the maxilla, several areas that are difficult to obtain, but are important if the denture will be successful are?

Back 71

Coranoid Contour
Maxillary Tuberosity
Pterygomaxillary Seal

Front 72

In the mandibular impression there are several areas that are often either missed or the impression is insufficient. These are also very important to the success of the lower denture. They are?

Back 72

Retromolar Fossa
Lingual Flange
Buccal Flange extended into the buccal shelf

Front 73

In the mandible, ____________ is bounded medially by the crest of the residual ridge, laterally by the external oblique ridge, and distally by the retromolar pad.

Back 73

Buccal Shelf

Front 74

What is the inner part (tissue side) of a denture referred to as?

Back 74

Intaglio

Front 75

What is the area on the outer part of the denture called?

Back 75

Cameo

Front 76

Which muscle dictates to a great deal the depth of the vestibule (mucobuccal turn, peripheral turn) of the denture (both maxillary and mandibular dentures)?

Back 76

Buccinator

Front 77

After you have made your record bases and WOR, what are two things that you will look for when contouring the WORs for your patient and fitting it?

Back 77

Verify that the angulation is correct by the lip postition
Check the vertical dimension of the WOR

Front 78

What is the position where the teeth and jaw rest when an individual is relaxed. This position is usually 2 mm below the VDO?

Back 78

Physiological Rest Position (VDR)

Front 79

After we obtain our VDR we want to obtain our VDO. This difference will create a space between the occlusal and incisive surfaces of the WOR and hence the teeth. This space is called?

Back 79

Interocclusal Space

Front 80

The AVERAGE interocclusal space between the rims (teeth) is:

Back 80

2-3 mm

with a range of 1-7 mm

Front 81

T/F
The interocclusal space should be the same for Class I, II, & III patients.

Back 81

False

Front 82

We make a centric relation record in order to mount the lower master cast to the upper master cast. List 2 reasons why we use C.R. for this purpose.

Back 82

CR is REPRODUCEABLE

CR is RECORDABLE

Front 83

What method of recording CR do we use?

Back 83

Static Method

Front 84

After obtaining the VDO and CR and your casts are mounted, your next step is?

Back 84

Reform the posterior portion of the WOR

Front 85

When the upper anterior teeth are set, there is one tooth whose vertical position and long axis conicide when viewed from the distal aspect. It is?

Back 85

The Canine

Front 86

When trying in the upper anteriors, one of the tests for correct tooth position is counting from 40-50. You are looking for the correct position of the incisors in relation to the lower lip. The correct position is?

Back 86

On the junction of the mucous membrane and vermillion border of the lower lip

Front 87

The "s" sound is what kind of sound?

Back 87

Linguoalveolar

Front 88

When trying in the upper and lower anteriors, have your patient repeat the letter "s" several times (count from 60-70). What will show you if the anteriors are in the correct vertical and horizontal position?

Back 88

The anteriors are end to end but not touching.

Front 89

When setting the lower anteriors, what is a formula to guide you?

Back 89

IMG

Front 90

What two sounds cause the most problems in a prosthetic context?

Back 90

S & T

Front 91

What is a common speech sound in nearly all languages of the world?

Back 91

S

Front 92

When setting the lower posterior teeth, markings are made on the cast as a guide. This consists of circling the retromolar pad area and then:

Back 92

Marking the height of the ridge

Front 93

A mark is made 1/2-2/3 the height of the retromolar pad and transferred to the land area. The plane of occlusion should fall on a line from the tip of the canine to:

Back 93

Even to this mark

Front 94

In selecting posterior teeth for a patient, name two things that should be a consideration as to what type should be used?

Back 94

1. The size of the alveolar ridge area
2. The angle of the condyle

Front 95

When selecting anterior teeth for a patient, name two things you must consider.

Back 95

1. Smile line (upper & lower)
2. Esthetics

Front 96

T/F
In setting the upper anterior teeth for a patient, one of the most important landmarks to observe is the lower lip line.

Back 96

True

Front 97

T/F
The ideal form of an occlusal pattern for denture patients is very low or no cusps on the posterior teeth.

Back 97

False

Front 98

In reality, a reasonable philosophy of complete denture occlusion must address the comfort, function, and esthetics of the patient. There are several factors that directly relate to these needs. Name two of them:

Back 98

Are there interferences when moving the jaw due to cusp height?

Are the teeth positioned so the pressure between the teeth exerts pressure on the ridge and not other tissue surfaces?

Front 99

When anterior teeth are arranged, there is usually a horizontal overlap (overjet) of 1.5-2 mm. This is done primarily?

Back 99

To allow forward movement of the mandible before any anterior tooth contact is made

Front 100

T/F
When doing the finish waxing of the denture set-up, the contour is important. For instance, if the contours of the lower denture are more convex on the buccal and lingual aspects, this would tend to unseat the lower denture because of the pressures exerted by the tongue and cheeks

Back 100

True

Front 101

T/F
Centric occlusion is the occlusion of opposing teeth when the mandible is in CR

Back 101

True

Front 102

T/F
Centric relation is the vertical reference position of the mandible that can routinely be assumed by edentulous patients under the direction of the dentist

Back 102

False

(horizontal dimension)

Front 103

There is a difference in dimension between vertical dimension of rest and vertical dimension of occlusion. This dimension is?

Back 103

2-4 mm

Front 104

T/F
Several tests are used to establish the VDO by means of wax occlusal rims. They are: a) judgement of overall facia support; b) visual observation of the space between the rims when the jaws are at rest; c) measurement between dots on the face when the jaws are at rest and when the occlusion rims are in contact; d) observations when the "s" sound is enunciated accurately and repeatedly - the average "speaking space"

This speaking space is not the same as the vertical dimension of rest. It is 1.5-3 mm on average w/Class I jaw relationship. It is usually greater in Class II patients and less in Class III patients

Back 104

True

Front 105

T/F
When establishing the occlusal plane on the upper WOR with a patient, there are 2 lines that can aid in this exercise:

1. Interpupillary line
2. Ala-tragus line

Back 105

True

Front 106

On the typodonts we have give aritrary dimensions for the upper and lower WOR. The upper rim in humans will vary in vertical length and are used to help determine the incisal edge length. This length will usually be _____ the lip line of a patient over 60 years of age.

a) above
b) below

Back 106

ABOVE

Front 107

A facebow is used to locate the ____ hinge axis of the mandible.

a. exact
b. arbitrary

Back 107

Arbitrary

Front 108

T/F
When obtaining the CR interocclusal records, the posterior portion of the lower WOR is relieved so as not to touch the upper rim. This is done so as not to create pressure on the posterior region. And allow essentially 3 points of contact, the two condyles seated in the glenoid fossa and the anterior "stop" of the WORs

Back 108

True

Front 109

In setting the upper anterior teeth for your 1st project, how do you position the central incisor?

a) straight vertically and .5 above the occlusal plane of the upper WOR

b) Slightly cant the body of the tooth to the distal with the incisal edge on the occlusal plane of the plane of the upper WOR

Back 109

b

Front 110

T/F
In setting denture teeth you must not lose the VDO that you have worked hard to establish. Although it is somewhat difficult to view the midline and set the anterior teeth with the incisal pin in place, this IS the best way to maintain the vertical dimension

Back 110

True

Front 111

T/F
After setting the upper 6 anterior teeth, the Fox occlusal plane is placed so that it touches the WOR and the incisal edges of the anterior teeth. The only 2 teeth that should not touch the plane are the lateral incisors

Back 111

True

Front 112

T/F
In setting the lower anterior teeth in a monoplane (or non-anatomical articulation) there should be no vertical overlap of the upper and lower teeth.

Back 112

True

Front 113

T/F
In setting the posterior monoplane teeth, the plane of occlusion should go from the established height of the mandibular cuspid to the base of the retromolar pad.

Back 113

False

Front 114

The pencil line that marks the ridge area should go from the:

a) height of the ridge to the buccal sulcus
b) height of the ridge to the ingual sulcus
c) Follow the height of the ridge from the canine to the base of the retromolar pad

Back 114

C.

Front 115

If you mark the area that represents the "upturn" of the ridge (i.e. at the base of the retromolar pad) and the distal of the cuspid, this distance will represent?

a) the amount of room you will have to set your posterior teeth
b) the overall length that your record base must cover
c) the peripheral turn area

Back 115

A.

Front 116

The mandibular posterior teeth should be set:

a) just anterior to the retromolar pad area
b) all the way to the top of the retromolar pad
c) it doesn't matter

Back 116

A.

Front 117

The alignment of the lower posterior teeth should be such that:

a) the central groove (or fossa) of the teeth should be over the line marking the height of the ridge
b) The occlusal surfaces should be flush with the imaginary plan going from the height of the cuspid to the middle 1/2 of the retromolar pad
c) the central fossa of each tooth is in line with the other except for the 2nd molar

Back 117

All of the above

Front 118

There are several reasons for using monoplane teeth instead of teeth with cusps. They are:

a. patients w/very atrophic ridges
b. neurological problems (patients w/inability to repeat CR)
c. older patients who are beginning to wear dentures for the 1st time
d. training dentures

Back 118

All of the above

Front 119

What is the setting time for slow set alginate?

Back 119

2-4.5 min

Front 120

An impression is?

Back 120

a negative of the original

Front 121

T/F
In terms of setting reaction, the thicker the mix, the quicker it takes to harden

Back 121

True

Front 122

Areas where we wish to have a thicker layer of impression material are?

Back 122

Non-bearing areas

Front 123

Where is the maxillary primary load bearing area?

Back 123

Hard Palate

Front 124

T/F
Undercuts on the primary cast should be relieved prior to fabrication of the custom tray

Back 124

True

Front 125

The primary bearing area on the mandibular edentulous arch is?

Back 125

Buccal Shelf

Front 126

T/F
Psychological factors according to House's classification, include the exacting indifferent, comical, and frustrated patient

Back 126

False

House Classifications are:
1. Philosophical Mind
2. Exacting Mind
3. Hysterical Mind
4. Indifferent Mind

Front 127

The least favorable palatal throat form is?

Back 127

Class III

Front 128

The most favorable palatal vault form is?

Back 128

U

Front 129

What is the desired depth of the sulcus from the future landing area in the final cast?

Back 129

2-3 mm

Front 130

T/F
Boxing is a critical step that must be done quickly after the initial impression is made

Back 130

False

Front 131

If a rubber base impression is made, you must wait at least ___, but no longer than ___ to pour.

Back 131

30 min
60 min

Front 132

What are the acceptable dimensions for land area & base thickness?

Back 132

land area = 3-4 mm
base = 15 mm

Front 133

The fovea palatinae are?

Back 133

Indentation near the midline of the palate
Always in soft tissue

Front 134

The vibrating line:
a. is a definite line on the palate
b. marks the end of the hard palate
c. extend from the left tuberosity to the right tuberosity
d. is on the hard palate
e. all of the above
f. none of the above

Back 134

None of the above

Front 135

The distal end of the denture should extend:

a. at least to the vibrating line
b. in most instances 1-2 mm posterior to the vibrating line
c. must cover the tuberosities
d. extend into the hamular notches

Back 135

All of the above

Front 136

What happens if the denture is over extended at the hamular notches?

Back 136

It will interfere with the pterygopalatine raphe when the mouth is opened wide and will cause sores on the raphe

Front 137

The record base is made of ____ with what kind of wax ____ for the occlusal rim?

Back 137

Triad
Type III (base plate)

Front 138

What are the 4 house denture patient classes?

Back 138

Philosophical
Exacting
Hysterical
Indifferent

Front 139

Patient behavior observed during the intitial appt can be very valuable in determining IF or HOW you can best serve this person

What 4 things indicate management problems?

Back 139

1. won't give name of previous dentist
2. unpaid bill with other dentist
3. lawsuit in progress against other dentist
4. disrupts office routine by talking too much or refusing to leave the office

Front 140

One of the most important pieces of knowledge a good dentist has is?

Back 140

know when to REFER a patient

Front 141

The fovea palatine are:

Back 141

Always in the soft palate

Front 142

The distal end of the upper denture should extend at least to the?

Back 142

vibrating line

Front 143

In most instances the upper denture should be ____ posterior to the vibrating line

Back 143

1-2 mm

Front 144

What is an instrument that simulates mandibular movements?

Back 144

An Articulator

Front 145

What articulator can be used for inlays/onlays?

Back 145

Class II articulator

Front 146

What articulator can be used for:

a. removable partial dentures
b. crowns and bridges
c. diagnostic wax ups

Back 146

Class III articulator

Front 147

What has adjustable caliper ends to locate the transverse horizontal axis of the mandible?

Back 147

A KINEMATIC face bow

Front 148

What registers the relation of the maxillary dental arch to the external auditory meatus and a horizontal reference plane?

Back 148

An Ear bow

Front 149

What records the spatial relationship of the maxilla to some anatomic reference point and then transfers this relationship to an articulator?

Back 149

A Face Bow