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xD3 Denture > Denture Midterm > Flashcards

Denture Midterm Flashcards

0
Q

What is the most desirable arch form for dentures?

A

Square arch; tapering is least desirable

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1
Q

Which arch size has the smallest margin for error

during impression making: large or small?

A

Small

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2
Q

What determines the amount of denture bearing area for

support of complete or tooth-tissue supported RPD?

A

Edentulous ridge width

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3
Q

What does edentulous ridge height provide?

A

Vertical walls that help the complete denture resist

movement horizontally

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4
Q

Is edentulous ridge height as important for horizontal

stability in RPD’s as it is in dentures?

A

No, RPD has framework to aide in resistance of

horizontal displacemen

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5
Q

What should be done to the pour up of an impression
of a tall, thin edentulous ridge before removing it from
the custom tray?

A

Soak in hot water to soften wax and undercut
blockout to decrease risk of breaking cast removmign
the impression

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6
Q

In determining the radiographic ridge height, the value of B determined by what?

A

The inferior border of mandible to crest of edentulous ridge

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7
Q

In determining the radiographic ridge height, what is the value of A determined by?

A

The inferior border of mandible to top of the mental foramen

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8
Q

What is the formula for calculating the percent bone remaining from the above two variables?

A

(B/3A)x100

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9
Q

If teeth are in the mandible, what are the variables and the formula for determining the percent bone remaining in areas adjacent to natural teeth?

A

R=root apex to crest of alveolar bone
C=root apex to CEJ
(R/C)x100

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10
Q

What are 4 categories of edentulous ridge shape?

A

U-shaped
V-shaped
Bulbous
Flat

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11
Q

What is another classification that is reserved for the mandibular posterior ridge?

A

Concave

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12
Q

What area of the mandible is the theoretical primary denture bearing area for a mandibular complete denture?

A

Buccal shelf

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13
Q

When classifying the height of muscle attachment and frena attachment versus the edentulous ridge, what does a high versus low attachment delineate?

A

“High” indicates the muscle or frena moves within 1-2mm of the crest of the edentulous ridge
“Low” indicates the muscle or frena moves 5mm or
greater from the crest of the edentulous ridge

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14
Q

What is indicated if the crest of the edentulous ridge moves with the normal movements of the vestibule?

A

Surgery: vestibuloplasty, ridge augmentation, mucosal or skin graft

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15
Q

Which side of the mandibular denture base length is particularly critical to the success of the mandibular denture?

A

Lingual border

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16
Q

Which ridge has more denture bearing area?

A

Maxillary

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17
Q

Why is the ideal palatal vault form for a maxillary complete denture flat with moderate depth, fairly tall edentulous ridges with parallel sides, broad flat crest, and fairly steeply inclined rugae?

A

Vault shape gives max area perpendicular to occlusal forces for dissipation
Ridge height prohibits horizontal denture movement

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18
Q

Why is a deep palatal vault favorable for denture retention but difficult to obtain an accurate impression and cast?

A

Easy to trap air during impression

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19
Q

Why is an impression of the palate of inherently decreased accuracy?

A

Because material shrinks toward its bulk (i.e.toward the tray and away from palate as it sets)

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20
Q

What are 4 reasons complete dentures are beaded so they will contact the palate?

A
  1. Inaccurate impression because material shrinks toward its bulk
  2. Material falls away from palate due to gravity
  3. Dental stone slumps away from palate if the impression is poured and immediately inverted onto a base
  4. Plastic based distorts when removed from cast due to
    strains from polymerization
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21
Q

A soft palate that flexes downward at an angle of 0-30 deg is what class?

A

Class I

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22
Q

A soft palate that flexes downward at an angle of30-60 deg is what class?

A

Class II

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23
Q

A soft palate that flexes downward at an angle of 60-90 deg is what class?

A

Class III

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24
Q

What is the term for the junction of the movable and non-movable
tissues in the posterior of the palate (NOT the junction of the hard and soft palate)?

A

Vibrating line

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25
Q

Over which palate, hard or soft, is the vibrating line always located?

A

Always over hard palate

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26
Q

The vibrating line is most often located anterior to what palatal landmarks?

A

Fovea

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27
Q

If the vibrating line is posterior to a line connecting the most distal part of the tuberosities, the soft palate form is what class?

A

Class I (corresponds to soft palate flex Class I (0-30 deg))

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28
Q

If the vibrating line is on the line that connects the distal most part of the tuberosities, the soft palate form is what class?

A

Class II (corresponds to soft palate flex Class II (30-60deg))

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29
Q

If the vibrating line is anterior to the line connecting the distal most part of the tuberosities, the soft palate form is what class?

A

Class III (corresponds to soft palate flex class III (60-90))

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30
Q

This line limits the area of the palate that can be covered by the denture, thereby limiting the amount of support that can be obtained from the palate?

A

Vibrating line

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31
Q

Which removable prostheses can be designed to rotate around an existing tori: complete denture or RPD?

A

Complete. RPD has to go parallel to long axis ofremaining teeth

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32
Q

Should tori still be removed if currently they do not interfere with anything?

A

Removal can be justified as a contingency plan because later removal as the RPD adds more teeth or the RPD is
replaced by a complete denture, the patient may be too old or in too poor health to undergo reduction surgery

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33
Q

What is the space required between the maxillary tuberosity and the mandibular retromolar pad area for one denture base and what is the breakdown?

A

4 mm
2mm for one denture base
2mm space between the base and the opposing ridge

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34
Q

What is the space required between the maxillary tuberosity and the mandibular retromolar pad area for a maxillary and mandibular denture base?

A

6mm
2mm maxillary denture base
2mm mandibular denture base2mm space between

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35
Q

What are 3 ways to gain space between the maxillary tuberosity and the mandibular retromolar pad?

A
  1. Surgery to create sufficient space (best option)
  2. Increase VDO
  3. Stop denture base short (not viable)
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36
Q

How much of the maxillary tuberosity must the maxillary denture base cover?

A

Entire maxillary tuberosity

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37
Q

How much of the mandibular retromolar pad area must be covered by the denture base?

A

¼ of retromolar pad

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38
Q

Why must denture base cover at least ¼ of mandibular retromolar pad area?

A

Prevent vertical bone resorption at distal end mandibular denture

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39
Q

Why must denture base cover at least ¼ of mandibular retromolar pad area?

A

Prevent vertical bone resorption at distal end mandibular denture

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40
Q

What is done to create space between the maxillary tuberosity and the coronoid process of the mandible if there is insufficient space?

A

Horizontal maxillary tuberosity reduction surgery

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41
Q

Mucosa on the edentulous ridge is considered firmly attached if it moves less than __ mm in any direction

A

1mm

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42
Q

Mucosa on the edentulous ridge is considered very displaceable if it moves more than how many mm in any direction?

A

3mm

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43
Q

Will the displaceability of edentulous ridge mucosa be uniform?

A

No, can have local or generalized displaceable areas

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44
Q

What is the optimal thickness of firmly attached mucosa for denture support?

A

2-4mm thickness

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45
Q

What are 2 reasons for 2-4 mm thickness of firmly attached mucosa on the edentulous ridge?

A
  1. Cover sharp areas of bone

2. Help dissipate applied forces

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46
Q

What are 3 causes of displaceable soft tissue over the edentulous ridge?

A
  1. Inadequate soft tissue removal during tooth extraction
  2. Replacement of resorbed cone with fibrous connective tissue
  3. Genetically thick submucosa
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47
Q

Is white mucosa considered healthy or unhealthy?

A

Unhealthy

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48
Q

How long should dentures be out of mouth daily to keep mucosa healthy?

A

8 hrs

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49
Q

How long should dentures be out of mouth before making impressions for new dentures or before the delivery of new dentures?

A

48 hrs or more

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50
Q

What are 2 things linked to extended denture wear or ill-fitting dentures?

A
  1. Inflammatory papillary hyperplasia

2. Epulis fissuratum

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51
Q

Surgical removal of inflammatory papillary hyperplasia to a cleansable height is indicated if the IPH does not
reduce to a sufficient height of how many mm?

A

<1½ mm

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52
Q

What are 2 concurrent treatments for Epulis fissuratum?

A
  1. Correcting border length and base fit

2. Surgical excision of hyperplastic tissue

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53
Q

Which area is critical to the retention and stability of the mandibular complete denture and is estimated by placing a dental mirror into the space, asking the patient to swallow, then observing the amount of the mirror pushed out of the space during the swallowing motion?

A

Retromylohyoid space/lateral throat form

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54
Q

Which retromylohyoid space/lateral throat form does not displace dental mirror at all during swallowing and is most suited for retention and stability of the mandibular denture base?

A

Class I

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55
Q

A thin film of this saliva type is sticky like denture adhesive and will aide retention, but it does not dilute chemicals so plaque accumulation and calculus formation is increased?

A

Thick, mucosey, or ropey saliva

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56
Q

Should existing TMJ issues be communicated to the patient even if there is no treatment for them and why?

A

Yes, may blame pre-existing condition on the new denture

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57
Q

Does having the patient hold the tip of the tongue against the soft palate as the mandible is hinged predictably result in closure around the transverse horizontal axis?

A

No

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58
Q

What is the imaginary line around which the mandible may rotate through the sagittal plane?

A

Transverse horizontal axis

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59
Q

The patient’s ability to hinge is important for making centric jaw relation records. What is the use of the centric jaw relation record?

A

To mount the mandibular cast to the maxillary cast

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60
Q

What is the position in which the tongue fills the space between the teeth or the edentulous ridge when the mouth is slightly open and the tip of the tongue rests gently against the lingual alveolus of the edentulous ridge (found in 75% of the population)?

A

Normal tongue position

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61
Q

A person with (pick one: a normal tongue position OR a retruded tongue position) will likely have a poor experience with a mandibular denture due to constant loss of border seal?

A

Retruded tongue position

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62
Q

What border molding will not be done if the patient lacks the ability to make tongue movement?

A

Lingual border molding movements on the mandibular custom tray

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63
Q

Chewing where on the denture promotes denture stability?

A

Anteroposterior center of the denture bearing area

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64
Q

How should complete denture patients chew their food?

A
  1. Do not incise as it will displace maxillary denture
  2. Cut up food
  3. Chew bilaterally simultaneously with a vertical chewing stroke around the transverse horizontal axis
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65
Q

Can border molding of the buccal vestibules still be accomplished if a person is unable to make movements of their lips and cheeks?

A

Yes, dentist will have to do it for them

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66
Q

What is the impairment of the power of voluntary muscle movement resulting in fragmentary or incomplete movement such as quivering or shaking of facial tissues?

A

Dykinesia

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67
Q

What is the term for a patient repeatedly pursing lips, sticking tongue between their teeth, excessive swallowing, non-
purposeful movements of the mandible or tongue, clenching, grinding, bruxing, clicking their dentures together, lifting mandibular denture up with their tongue?

A

Adverse habits

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68
Q

What are the 6 arch shapes?

A
  1. Square
  2. Tapering
  3. Ovoid
  4. Square tapering
  5. Tapering ovoid
  6. Square ovoid
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69
Q

How far are custom tray borders to be from the vestibule?

A

2-3mm

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70
Q

How long should patient have their current dentures out prior to the border molding/impression appointment?

A

48 hours

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71
Q

Will the current dentures feel tight or loose after the patient has left them out for 48 hrs?

A

Initially loose

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72
Q

How much space should there be between the sides of a stock impression tray and the edentulous ridge?

A

5mm

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73
Q

What should be done if wax is used to modify any part of the stock tray before taking the alginate impression?

A

Paint wax with alginate adhesive

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74
Q

The manual says what impression should be done first?

A

Mandibular

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75
Q

How should an irreversible hydrocolloid impression be stored before pouring up?

A

100% humidity container (zip lock)

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76
Q

What stone is the initial irreversible hydrocolloid impression poured in?

A

Type III dental stone (yellow)

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77
Q

What does the red line indicate on the initial casts when planning the custom tray?

A

Estimated border extension of the denture

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78
Q

What does the blue line indicate on the initial casts when planning the custom tray?

A

Border extension of the custom tray

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79
Q

How far should the blue line be from the red line on the initial cast when planning the custom tray?

A

2-3mm

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80
Q

The maxillary custom tray posterior border should be in what relation to the estimated vibrating line?

A

At or slightly anterior to the vibrating line

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81
Q

Should the mandibular custom tray be short of or cover the restromolar pads?

A

Cover the retromolar pads

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82
Q

Maxillary custom tray should have what path or placement: anterior or vertical?

A

Anterior

83
Q

Mandibular custom try should have what path of placement: anterior or vertical?

A

Vertical

84
Q

What is the process of determining the length and contour of the vestibular tissues before and / or wen making an impreeion (accopmlished by having the patient make functional movements and the dentist manipulating the patient’s tissues)?

A

Border molding

85
Q

What must you have knowledge of in order to bordermold?

A

How denture border appear

86
Q

What should be verified when the custom trays are tried in the patient’s mouth before border molding?

A
  1. Border are 2-3mm short of muscle and frena attachments
  2. Maxillary posterior covers tuberosities and extends to vibrating line
  3. Mandibular posterior border covers at least 1/2 of retromolar pad
87
Q

What is the heat for the water bath?

A

140 degrees F

88
Q

What should the compound for border molding be formed to?

A

Slightly longer and thicker than anticipated border

89
Q

What is the purpose of the hot water bath?

A

Temper the hot wax

90
Q

Should the compound be kept in the tissue surface of the custom tray?

A

No. Trim out to reveal the inside edge of the tray border

91
Q

What is looked for when inspecting the compound after the border molding?

A

That there was sufficient height (203mm) of compound that vestibular muscles could have shaped the border

92
Q

What are 2 things that could interfere with insufficient height of compound to allow border molding?

A
  1. Insufficient height of compound initially.
  2. Compound wiped off during seating of the tray
  3. Tray border too long
93
Q

Compound in the tissue surface of the tray will displace the tray inferiorly and change all the borders slightly, unless what?

A

Unless soft tissue of the palate was displaced superiorly by the compound

94
Q

When does the esthetics of the denture begin?

A

At border molding and impression

95
Q

Should a border seal be created during the border molding process?

A

Yes

96
Q

Where will the maxillary custom tray border molding be thickest?

A

Lateral in the molar area

97
Q

What is the desired shape of the compound in cross-sectional view after border molding?

A

Tear drop

98
Q

What are the 2 purposes of placing 3-5 holes with a #8 round bur in a border-molded maxillary custom tray before making the master cast impression?

A

Allow escape of trapped air

99
Q

What must be done with the border molded custom tray before placing the master cast impression material in it?

A

Paint with an adhesive specific to the impression material

100
Q

What impression material do we use for master cast impressions?

A

Polysulfide rubber base

101
Q

How should the patient be positioned for impression-making?

A
  1. Jaw to be impressed parallel to the floor

2. Jaw at the level of the operator’s elbow

102
Q

What are 2 things to prepare the patients oral environment for the master cast impression?

A
  1. Have the patient rinse with dilute mouthwash to decrease saliva
  2. Dry maxiilla and mandible with gauze
103
Q

Are the diameters of the polysulfide rubber base material the same?

A

No

104
Q

How is the base and the caralyst dispensed to ensure equal amounts?

A

Dispense equal lengths

105
Q

How long does a polysulfide rubber base material take to mix and how will you know when it is mixed?

A

1-1.5 minutes

Will have a uniform color

106
Q

What spatula is used to load the custom tray with the impression material: a diamond-shaped spatula or a cement spatula?

A

Cement spatula

107
Q

The custom tray should be loaded with what thickness and to what extent with polysulfide rubber base impression material?

A

Thin layer throughout tissue surface and over the tray borders

108
Q

How long should loading the tray take?

A

1/2 to 1 minute

109
Q

The polysulfide rubber base material will reach initial set in how many minutes?

A

5 minutes

110
Q

The setting time for the polysulfide impression material is how many minutes from initiating the mix?

A

10 minutes

111
Q

How can the visualized vibrating line that is marked with an indelible marker on the palate be transferred to the impression?

A
  1. Replace impression

2. Valsalva to transfer the ink onto the impression

112
Q

What can be used to correct small voids in non-critical areas of the master cast impression?

A

Iowa wax

113
Q

How far below the master impression borders and how wide should the beading wax or the plaster mix be placed in preparation for the master cast pour up?

A

3mm below the peripheral roll

114
Q

The height from the highest part of the tissue surface of the master cast impression to the top of the boxing wax for the master cast pour up?

A

8-10 mm for the beading wax method

13mm for the plaster method

115
Q

The land area of the master cast should be how many mm wide initially?

A

5mm

116
Q

After boxing the 1:1 mounting plaster, flour pumice mixture that the master cast impression is se in, what is applied to the exposed areas of the 1:1 mis to keep the dental stone from bonding with it?

A

Petroleum jelly

117
Q

Which impression requires more stone: maxillary or mandibular?

A
  1. Mandibular (250g)

2. Maxillary (200g)

118
Q

The trimmed land area of the master cast should be what dimensions?

A

3-4mm and beveled 10 degrees toward the facial

119
Q

What is the vestibular depth dimensions of the master cast?

A

2-3mm

120
Q

The base of the master cast should be how thick from the base to the bottom of the buccal vestibule in the maxillary or the base to the flat tongue area in the mandible?

A

8-10mm

121
Q

The posterior of the mandibular record base should cover how much of the retromolar pad area and should not extend into what area?

A

Cover at least 1/2 of the retromolar pad

Should not extend into deep retromylohyoid undercut

122
Q

The maxillary occlusal rim should be how wide buccolingually in the posterior?

A

8-10mm

123
Q

Maxillary occlusal rim should be how far anterior from the posterior border of the maxillary record base?

A

15mm

124
Q

Maxillary occlusal rim should be how wide faciolingually in the anterior?

A

1-2mm

125
Q

Maxillary occlusal rim should be how tall in the posterior measuring from the depth of the buccal vestibule to the top of the occlusal rim?

A

18mm

126
Q

MAxillary occlusal rim should be how tall in the anterior measuring from the depth of the facial vestibule to the incisal edge of the occlusal rim?

A

24mm

127
Q

With the maxillary record base in the patient, what should be seen beneath the patient’s nose in profile?

A

Concavity = nasolabial sulcus

128
Q

What is the starting point for the length of the occlusal rim below the patient’s resting lip to miic the length of the central incisor?

A

1mm inferior

129
Q

What is the average distance from the facial vestibule to the inferior border of the occlusal rim that is adjusted to have 1m showing below the patient’s relaxed lip?

A

24mm

130
Q

What can be done to test the length of the adjusted maxillary occlusal rim?

A

Have the patient say F and V to ensure lower lip brushes against the incisal edge of the occlusion rim

131
Q

F and V sounds are called what type of sounds?

A

Labiodentals

132
Q

What is the Fox Plane used for?

A

Check hieight and angulation of the posterior occlusion rim

133
Q

The Fox Plane should be higher in what region?

A

Higher in mandibular region than incisors

134
Q

The denture manual says the Fox plane resting against a properly contoued maxillary occlusal rim should be parallel to what line?

A

Camper’s Line (from inferior border of the ala of the nose to the superior border of the tragus of the ear)

135
Q

What is the term for the vertical dimension of the face when the teeth are in occlusion?

A

Vertical dimension of occlusion

136
Q

What is the term for the vertical dimension of the face when the mandible is in the “rest position” (closing muscles relaxed)?

A

Vertical dimension of rest

137
Q

What is the term for the space between the teeth at VDR, also called freeway space?

A

Interocclusal clearance

138
Q

Interocclusal clearance should be ___mm?

A

2-4 mm in the premolar region

139
Q

The difference between VDO and VDR is what?

A

The interocclusal clearance, 2-4mm in the premolar region

140
Q

What is the term for the space between the mandibular incisal edges and the maxillary anterior teeth when the patient is pronouncing the sibilant sounds (s,z,sh,zh,chi,j)?

A

Closest Speaking Space

141
Q

The closest speaking space should be how much?

A

1mm or less

142
Q

What should there be when a patient closes from VDR to VDO?

A

Some mandibular closure

143
Q

What is the tentative centric jaw relation record is made based off what movement of the mandible: hinge or translation?

A

Hinge with the condyles in CR

144
Q

What are indications that tentative centric jaw relation record is acceptable when it is hand articulated?

A
  1. No contact between record bases
  2. No rock in the record bases
  3. Position of record base is stable
145
Q

Any tooth mold that is ____ the width indicated by the Truyte Tooth indicator is a potentially acceptable tooth mold for the patient?

A

+ or - 0.5

146
Q

Which is more important from the Trubyte tooth indicator: the length or width?

A

Width

147
Q

What did House’s research show about the length of the natural tooth versus that indicated by the biometeric ratio?

A

Length of natural usually less than that indicated by biometric ratio

148
Q

A maxillary central incisor should be similar to what when held upside down?

A

To width, length, and outline form of patient’s face

149
Q

A complete denture occlusal scheme indicated for no vertical overlap (no overbite) and 3mm or less horizontal overlap (overjet)?

A

Any occlusal scheme

150
Q

What is a complete denture occlusal scheme indicated for no vertical overall (no overbite), and 3-5mm horizontal overlap (overjet)?

A

Any EXCEPT monoplane

151
Q

What is a complete denture occlusal scheme indicated for no vertical overlap (overbite) and more than 5mm horizontal overlap (overjet)?

A

Balanced occlusion with flat teeth

152
Q

What is complete denture tooth type is indicated in the maxillary denture for esthetics?

A

Cusped denture teeth

153
Q

What is a complete denture occlusal scheme indicated when there is a discrepancy between the posterior maxillary and mandibular ridge widths?

A

Flat teeth

154
Q

What is the simplest complete denture occlusal scheme and recommended when there is no vertical overlap (overbite) and little horizontal overlap (overjet)?

A

Monoplane occlusion (the flat teeth set flat)

155
Q

When mounting the mandibular master cast to the articulator using the tentative centric jaw relation what should be done to the articulator index pin?

A

Open 1-2mm to account for CR record thickness

156
Q

After the mandibular is mounted and the centric jaw relation is removed what is done and recorded?

A

Loosen the index pin until the maxillary and mandibular rims contact and record where that VDO is based on + or - from the 0 mark on the pin

157
Q

What is used to determine a rough guide to the canine placement of denture teeth?

A

Line perpendicular to palatal suture through the incisive papilla onto the edentulous ridge

158
Q

What wax is used to attach denture teeth to the record base?

A

Set up wax

159
Q

What is mechanically desirable for mandibular posterior denture teeth arrangement?

A

Arrange over center of the ridge

160
Q

Can a monoplane occlusion be arranged for the wax try-in even if another occlusal scheme is to be used for the denture?

A

Yes, easier to develop and can verify VD, CR mounting, esthetics, phonetics

161
Q

What is a consideration for the initial alginate impression?

A

Use a bit less water to make thicker since you don’t have teeth to get around

162
Q

What are 4 goals in complete denture construction?

A
  1. Esthetics
  2. Comfort
  3. Function
  4. Preserve remaining tissue
163
Q

What is a major class of drugs prescribed to the elderly, who make up 10% of the population, but consume 25% of medications in the US?

A

Heart medications

164
Q

What are 3 factors that interfere with normal function of removable prosthetsis?

A
  1. Xerostomia
  2. Impaired wound healing (pressure spots under denture)
  3. Frequent fungal infections
165
Q

What are 4 psychological assessments of the patient?

A
  1. Philosophical
  2. Indifferent
  3. Exacting
  4. Hysterical
166
Q

What is the psychological patient type that has had no previous denture experience?

A

Philosophical

167
Q

What is the psychological patient type that does not feel the need for teeth and will most likely need education?

A

Indifferent

168
Q

What are 2 psychological patient types that can be expected to have poor adaptation to dentures?

A
  1. Exacting

2. Hysterical

169
Q

What are 3 objectives for a complete denture that begins with preliminary impression?

A
  1. Retention
  2. Stability
  3. Support
170
Q

Is the hard palate epithelium keratinized or non-keratinized?

A

Keratinized

171
Q

The masseter muscle only affects what part of which denture?

A

Distobuccal flange of the mandibular denture

172
Q

What is another indicator, beyond being rolled, that the compound made tissue contact during the border molding?

A

Surface is smooth and shiny

173
Q

What is the only border molding that cannot be done operator-assisted (the dentist manipulating the tissues to mold the border of the custom tray compound)?

A

Lingual

174
Q

What are the times for the COE-Flex polysulfide rubber base impression material?

A

Working time 4 minutes

Curing time 8-10 minutes

175
Q

What is the objective of beading and boxing the master cast impression?

A

Preserve and protect the borders by producing a protective ledge around the cast

176
Q

What is the only place where tissue does not hang over and aide in holding the denture in, and is the reason it is given a posterior palatal seal?

A

Maxillary denture posterior

177
Q

What are 3 functions of posterior palatal seal?

A
  1. Compensates for lack of soft tissue drape
  2. Compensates for linear shrinkage of denture base acrylic during processing
  3. Maintains tissue contact during functional movement of denture
178
Q

What are 6 factors of retention?

A
  1. Adhesion
  2. Cohesion
  3. Interfacial surface tension
  4. Capillary attraction
  5. Atmosphere
  6. Oral and facial musculature
179
Q

The masticatory mucosa covers what areas?

A

Residual ridge and hard palate

180
Q

The dorsal surface of the tongue is covered by what mucosa?

A

Mucous membranes

181
Q

The dorsal surface of the tongue is covered by what mucosa?

A

Specialized

182
Q

Besides the mandible, what other bone do the muscles of the floor of the mouth (mylohyoid, genioglossus, and geniohyoid) connect to?

A

Hyoid

183
Q

Is COE-Flex Polysulfide rubber base impression material low viscosity or high viscosity?

A

Low viscosity

184
Q

What are 3 objectives of boxing a master cast?

A
  1. Produce a container
  2. Produce accurate cast of predetermined thickness
  3. Produce a dense accurate cast using gravity
185
Q

Will the record base be a part of the final denture?

A

No

186
Q

What is holding the jaw in place at VDR?

A

Muscles

187
Q

Is a slide between CR to CO acceptable in the denture patient as it would be in the denture patient?

A

No

188
Q

Do teeth have anything to do with a facebow?

A

No

189
Q

What are 3 points of reference for a facebow?

A 
2 posterior (the approximate hinge axis)
1 anterior (measured or parallel to infraorbital notch)
190
Q

What is the purpose of the facebow?

A

To mount the maxillary cast on the articulator to mimc its relation in the patient to the patient’s hinge axis

191
Q

What are 4 objectives of the maxillary occlusal rim?

A
  1. Establish proper lip support
  2. Establish proper tooth position
  3. Establish maxillary midline
  4. Establish anterior portion of occlusal plane
192
Q

Our facebow is what style?

A 
Caliper (opens/closes to different widths)
Remote mount (only need the bitefork)
193
Q

How can a long term denture wearer have a decreased VDO?

A
  1. Acrylic denture tooth wear
  2. Resorption of maxilla up and back
  3. Resorption of mandible down and forward
194
Q

Why must the CR record be completely in the recording material?

A

To ensure the record base will not displace tissues

195
Q

How is the tentative CR record verified once it has been mounted?

A

Make 2nd CR record and make sure when it is placed on the mounted master casts and the articulator closes that the condylar balls remain against the back of their housing

196
Q

What increases the chance of success for dentures?

A

When the patient is involved in the production of the denture

197
Q

According to Dr House, what is the width of the maxillary central incisor equal to?

A

1/16 of the bizygomatic width

198
Q

Why do we use monoplane teeth?

A

Allows more stable occlusion so wherever the patient bites, due to their lack of proprioception, they will occlude on a flat table

199
Q

What is a mechanical devide which represents the temporomandibular joints and jaw members to which maxillary and mandibular casts may be attached?

A

Articulator

200
Q

Tooth shade is based on what premise?

A

Harmonious relationship between color or patient’s teeth and patient’s complexion

201
Q

What is the tooth mold selection system we use?

A

Trubyte

202
Q

There is a harmonious relationship between what tooth and what view of the face?

A

Inverted outline form of maxillary central incisor and patient’s facial shape

203
Q

How many years will it take an acrylic tooth to wear to reverse curve?

A

5-7 years

204
Q

What type of denture teeth have cuspal inclination of 30 degrees or more?

A

Anatomic teeth

205
Q

What type of denture teeth have shallow cusps and less steep inclined planes than those of the 30 degree cusp type?

A

Semianatomic teeth

206
Q

What type of denture teeth with occlusal form have no resemblance to anatomic teeth and offer occlusion without intercuspation?

A

Nonanatomic teeth

xD3 Denture (1 decks)

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