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Oral pathology > Prostho > Flashcards

Prostho Flashcards

1
Q

Which connectors carry a poor prognosis rigid/ non-rigid connectors?

A

Nonrigid connectors

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2
Q

Crown-to-Root Ratio
* ideal
* realistic
* minimum
* poor (not used for abutments)

A

Crown-to-Root Ratio
* 1:2 ideal
* 2:3 realistic
* 1:1 minimum
* 2:1 poor (not used for abutments)

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3
Q

_____________ roots are preferred over ___________roots

A

Divergent, multiple, curved, and broad roots
are preferred over fused, single, conical, and
round roots

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4
Q

Overdenture
* ______ implants in mandible, __________ implants in maxilla

A

Overdenture
* 2 implants in mandible, 4 implants in maxilla

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5
Q

Allows minor angle correction cement/screw retained implant

A

cement-retained implant

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6
Q

Alginate
* __________ controls the setting rate
* __________ minutes - remove tray
* __________ minutes - pour impression
* _________ minutes - cast sets

A
  • Trisodium phosphate controls the setting rate
  • 2-3 minutes à remove tray
  • Within 15 minutes à pour impression
  • 30-60 minutes à cast sets
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7
Q

Maximum Intercuspation (MI)
* dependent/Independent of condylar position?

A

Maximum Intercuspation (MI)
* Independent of condylar position

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8
Q

single fixed procedure- MI/CR?
complete dentures, multiple teeth being restored or replaced MI/CR?
MI and CR coincide in only ______% of the
population

A

MI
CR
MI and CR coincide in only 10% of the
population

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9
Q
  • ________ facebow= orients maxillary cast to skull via external auditory meatus to stabilize the bow
    *_________ facebow= placed on the hinge axis of the mandible
A
  • Arbitrary facebow= orients maxillary cast to
    skull via external auditory meatus to stabilize
    the bow
  • Kinematic facebow= placed on the hinge axis
    of the mandible
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10
Q

Semiadjustable Articulator
* Allows you to set the Bennett angle (____˚) and HCI
(____˚)

A

Semiadjustable Articulator
* Allows you to set the Bennett angle (15˚) and HCI
(30˚)

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11
Q

upper and lower members are rigidly
attached ________ articulator

A

non arcon

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12
Q

Distance between hinge and teeth is significantly shorter than in the patient

A

Nonadjustable Articulator

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13
Q
  • Casts poured from alginate are more
    accurately mounted with ______ records
  • Casts poured from elastomeric
    materials are more accurately
    mounted with _______
A

wax
elastomeric materials (PVS) or ZOE paste

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14
Q

Disclusion
* Condylar guidance
– Slope of ______
– Represented by _________ on articular
–__________determinant of occlusion
* Incisal guidance
– Represented by _________ on articulator
–___________ determinant of occlusion
* Canine guidance
– When in ________ movements all posterior teeth are immediately discluded as contact occurs solely between upper and lower canine on the working side
* Anterior guidance
– Refers to both ________ and _________ guidance

A

Disclusion
* Condylar guidance
– Slope of articular eminence
– Represented by HCI on articular
– Posterior determinant of occlusion
* Incisal guidance
– Represented by pin and guide table on articulator
– Anterior determinant of occlusion
* Canine guidance
– When in lateral movements all posterior teeth are immediately discluded as contact occurs solely between upper and lower canine on
the working side
* Anterior guidance
– Refers to both incisal and canine guidance

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15
Q
  • During protrusive, _______ and __________ guidance provide clearance for all posterior teeth
  • During lateral, _______ on working side and ________ on balancing side provide clearance for posterior teeth on balancing side
A
  • During protrusive, incisal and condylar guidance provide clearance for all posterior teeth
  • During lateral, canines on working side and condyle on balancing side provide clearance for posterior teeth on balancing side
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16
Q
  • Mechanical incisal guide table gives insufficient
    information to reproduce _____________
  • ____________ is made out of acrylic resin
    and provides this information
A
  • Mechanical incisal guide table gives insufficient
    information to reproduce lingual contours of maxillary
    anterior natural teeth
  • Custom incisal guide table is made out of acrylic resin
    and provides this information
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17
Q
  • Front teeth protect back teeth—front teeth disclude posterior teeth during _________ and _________ movements
  • Back teeth protect front teeth—back teeth have ______ occlusal surfaces and ________ roots to help protect anterior teeth from bite forces
A
  • Front teeth protect back teeth—front teeth
    disclude posterior teeth during protrusive and
    lateral movements
  • Back teeth protect front teeth—back teeth
    have flat occlusal surfaces and strong roots to
    help protect anterior teeth from bite forces
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18
Q

Vibrating Line
– _______mm away from fovea palatini

A

Vibrating Line
– 2mm away from fovea palatini

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19
Q

Maxillary Edentulous Anatomy
– Distobuccal area presents _____ notch
mandibule
– Distobuccal area presents _____ notch

A
  • Coronoid Notch
    Masseteric notch
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20
Q
  • Pterygomandibular Raphe
    – Connects _________ and ___________ muscles
A
  • Pterygomandibular Raphe
    – Connects buccinator and superior pharyngeal constrictor
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21
Q

Mandibular Edentulous Anatomy
* Labial Frenum- ________ muscle
* Buccal Frenum-
* Lingual Frenum-

A

Mandibular Edentulous Anatomy
* Labial Frenum- orbicularis oris
* Buccal Frenum- orbicularis oris,
buccinator
* Lingual Frenum- genioglossus

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22
Q
  • Labial Vestibule-
  • Buccal Vestibule-
A
  • Labial Vestibule- mentalis
  • Buccal Vestibule- buccinator
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23
Q

Retromolar Pad
– Contains attachments from__________ muscles

A

Retromolar Pad
– Contains attachments from temporalis, buccinator, superior pharyngeal constrictor, and pterygomandibular raphe

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24
Q

Alveololingual Sulcus
* Anterior Region
– From __________ to ________
* Middle Region
– From __________ to distal end of ___________
– Flange is deflected __________ away from mandible due to ___________ in this area and
* Posterior Region
– Extends into____________
– Although mylohyoid attaches higher posteriorly, the posterior fibers are directed more __________ so the denture seats deeper and the lingual flange is longer
– Flange is deflected __________ toward the ramus of the
mandible to form typical S-form of lingual sulcus
– Denture extension in this area is limited by __________ and ___________

A

Alveololingual Sulcus
* Anterior Region
– From lingual frenum to premylohyoid fossa
* Middle Region
– From premylohyoid fossa to distal end of mylohyoid
ridge
– Flange is deflected medially away from mandible due to prominence of mylohyoid ridge in this area and contraction of mylohyoid medially
* Posterior Region
– Extends into retromylohyoid fossa
– Although mylohyoid attaches higher posteriorly, the posterior fibers are directed more vertically so the denture seats deeper and the lingual flange is longer
– Flange is deflected laterally toward the ramus of the
mandible to form typical S-form of lingual sulcus
– Denture extension in this area is limited by palatoglossus and superior constrictor muscles.

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25
Q
  • Buccal Shelf
    – Provides __________ for denture
    – Lies __________ to occlusal forces
    – ___________ attaches here
A
  • Buccal Shelf
    – Provides support for denture
    – Lies perpendicular to occlusal forces
    – Buccinator attaches here
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26
Q

Frenectomy
* ____________ (most to least
common)

A

Labial > buccal > lingual

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27
Q

Free Gingival Graft
* Necessary for some _____denture teeth

A

Free Gingival Graft
* Necessary for some overdenture teeth

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28
Q

Combination Syndrome symptoms

A

Combination Syndrome symptoms
* Overgrowth of tuberosities
* Papillary hyperplasia in hard palate
* Extrusion of lower anterior teeth
* Loss of bone under the partial denture bases

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29
Q

Vertical Dimension
of Rest (VDR)
* Distance between
____________ and ___________ at rest
* In this position there
is usually __________mm of
space between upper
and lower premolars

A

Vertical Dimension
of Rest (VDR)
* Distance between
nose and chin at rest
* In this position there
is usually 3mm of
space between upper
and lower premolars

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30
Q

Interocclusal
Space
* Difference between
these two distances
(ideally ________mm)

A

2-4mm

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31
Q
  • VDR = _______ + __________
A
  • VDR = VDO + 3mm
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32
Q

Muscles of mastication fatigue seen in Excessive/ Insufficient VDO

A

Excessive

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33
Q

Facebow transfers the relationship between
the __________ and _________ from the patient to
the articulator

A

Facebow transfers the relationship between
the hinge axis and maxilla from the patient to
the articulator

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34
Q
  • Camper’s line= imaginary line from _____ to
    _________
A
  • Camper’s line= imaginary line from ala of nose to
    tragus of ear
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35
Q

_______________ guidance should be avoided in
complete denture occlusion to prevent
dislodgment of denture bases

A

Anterior

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36
Q

lateral movement of both
condyles toward the working side, basically “TMJ
looseness” is called

A

Bennett movement

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37
Q
  • Curve of Spee= __________ curve to ensure
    loading into long axis of each tooth
    – More __________ inclination as you move distally
  • Curve of Wilson= __________ curve along posterior
    cusp tips to ensure loading into long axis of each tooth
    – More ___________ inclination as you move distally
A
  • Curve of Spee= anteroposterior curve to ensure
    loading into long axis of each tooth
    – More mesial inclination as you move distally
  • Curve of Wilson= mediolateral curve along posterior
    cusp tips to ensure loading into long axis of each tooth
    – More lingual inclination as you move distally
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38
Q

Fricative or Labiodental Sounds
* Contact between __________ and
____________
* Help determine ____________

A
  • Contact between maxillary incisors and
    wet/dry line of lower lip
  • Help determine position of incisal edges of maxillary
    anterior teeth
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39
Q

Linguodental Sounds
* Contact between ____________ and __________
* Help determine _____________

A
  • Contact between tip of tongue and upper and
    lower teeth
  • Help determine labiolingual position of
    the anterior teeth
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40
Q

– Tongue is not visible= teeth are
set too ____________
– Tongue sticks out= teeth are set too
________

A

– Tongue is not visible= teeth are
set too far forward
– Tongue sticks out= teeth are set too
far back

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41
Q

Sibilant or Linguoalveolar Sounds
* Contact between ___________ and ___________
* Help determine

A
  • Contact between tip of tongue and the anterior
    palate or lingual surface of the teeth
  • Help determine vertical length and overlap of
    anterior teeth
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42
Q

Whistling - __________ arch form
* Lisp where s becomes sh- _________ arch form
* Closest speaking space= also want to evaluate
vertical dimension during pronunciation of
_______ sound, the interincisal separation should be __________mm

A

Whistling à too narrow arch form
* Lisp where s becomes shà too wide arch form
* Closest speaking space= also want to evaluate
vertical dimension during pronunciation of s sound, the interincisal separation should be 1 to 1.5mm

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43
Q

Bilabial Sounds
* Contact between
* ___________ can affect production of these sounds

A

Bilabial Sounds
* Contact between both lips
* Insufficient lip support by the teeth or labial
flange can affect production of these sounds

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44
Q

Guttural Sounds
* Contact between __________ and __________

A
  • Contact between back of tongue and throat
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45
Q

Support
* Resistance to __________ forces
Stability
* Resistance to __________forces
Retention
* Resistance to ____________ forces

A

Support
* Resistance to vertical seating forces
Stability
* Resistance to horizontal dislodging forces
Retention
* Resistance to vertical dislodging forces

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46
Q

Adhesion
* Attraction of _______ molecules
Cohesion
* Clinging of ___________ molecules

A

Adhesion
* Attraction of unlike molecules
Cohesion
* Clinging of like molecules

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47
Q

Underextension
* Denture flange is
* Lack of

A

Underextension
* Denture flange is too short
* Lack of retention

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48
Q

Liquid
* monomer
* inhibitor
* cross-linking agent
* activator

A

Liquid
* Methyl methacrylate (MMA)= monomer
* Hydroquinone= inhibitor
* Glycol dimethacrylate= cross-linking agent
* Dimethyl-p-toluidine= activator

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49
Q

Powder
* powder
* initiator
* Pigment

A

Powder
* Polymethyl methacrylate (PMMA)= powder
* Benzoyl peroxide= initiator
* Salts of iron, cadmium, or organic dyes=
pigment

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50
Q
  • Ideal ratio of monomer to polymer is _________
A

1:3

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51
Q

Shrinkage always occurs, but more shrinkage if
excessive __________

A

monomer

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52
Q
  • Porosity is due
A

Porosity is due to underpacking with resin at
time of processing or being heated too rapidly

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53
Q

more stain and wear
resistant- acrylic /porcelain

A

porcelain

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54
Q

Class _________
* Unilateral bounded edentulous space (BES)

A

Class III
* Unilateral bounded edentulous space (BES)

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55
Q

Rule #5:
Rule #8:

A

Rule #5: Most posterior edentulous area
determines the classification.
Rule #8: Class IV cannot have any
modifications by definition.

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56
Q

Maxillary Major Connector
Most rigid:
Least rigid

A
  • Complete palatal plate
  • Horseshoe
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57
Q

Add strength and maintain tissue contact to
prevent food impaction

A

Beading

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58
Q

When depth of lingual
vestibule is ≥7mm __________
– When depth of lingual
vestibule is <7mm __________

A
  • Lingual bar
    Lingual plate
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59
Q

Additional tooth loss
anticipated with __________ major connector

A

Lingual plate

60
Q

When there is a missing
canine

A

Labial bar (swinglock)

61
Q

Rest
provide ___________
2. Minor connector=
3. Clasp arms
– Retentive clasp arm=
– Reciprocal clasp arm=

A

Support
2. Minor connector= stability
3. Clasp arms
– Retentive clasp arm= retention
– Reciprocal clasp arm= stability

62
Q

Occlusal Rest
* ___________ shape
* _____ MD width
* ________ intercuspal width
* __________mm deep for base metal
* Angle formed with vertical minor connector is
__________˚

A

Occlusal Rest
* Rounded, semicircular outline form (spoonshaped)
* One-third MD width
* One-half intercuspal width
* 1.5mm deep for base metal
* Floor inclines apically toward center
* Angle formed with vertical minor connector is
<90˚

63
Q

Cingulum Rest
* _____________ shape
* __________mm MD length
* __________mm labiolingual width (ledge)
* _________mm deep
* Contraindicated for _________________

A

Cingulum Rest
* Inverted V or U shape
* 2.5-3mm MD length
* 2mm labiolingual width (ledge)
* 1.5mm deep
* Contraindicated for mandibular incisors

64
Q

Incisal Rest
*___________ shape
*_________mm MD length
* ____-mm deep

A

Incisal Rest
* Rounded notch at incisal angle
* 2.5mm MD length
* 1.5mm deep

65
Q

Guide Planes
* __________ buccolingual width
* Extends ________mm vertically down from marginal
ridge

A

Guide Planes
* One-third buccolingual width
* Extends 2-3mm vertically down from marginal
ridge

66
Q

In adolescents aged 12 to 19 years, dental caries is most prevalent in__________ Americans

A

Hispanic Americans

67
Q

Clasps should encircle a tooth at least 180˚ is Extracoronal/intracoronal?

A

Extracoronal

68
Q
  • Contacts tooth below height of contour/survey line _______ clasp
    Contacts tooth above HOC/survey line _________ clasp
A

Retentive Clasp
Reciprocal Clasp

69
Q

Ring Clasp
* Used when ____________ is adjacent to BES

A

Ring Clasp
* Used when undercut is adjacent to BES

70
Q

Cobalt-Chromium
* _______% shrinkage which causes irregularities and
porosity

A

Cobalt-Chromium
* 2.3% shrinkage which causes irregularities and
porosity

71
Q

thinnest gingival tissue is ____________ surfaces of molars and premolars

A

thinnest gingival tissue is lingual molars and facial premolars

72
Q

Tooth preparation ________ has more operator control.

A

Taper or parallelism

73
Q

If you have a short clinical crown
prep…
– __________ for retention
– ___________ for resistance

A

– Buccal grooves for retention
– Proximal grooves for resistance

74
Q
  • Minimum metal thickness
    – ______mm - at the margin
    – __________mm - non contact areas
    – _______mm - contact areas
  • Minimum porcelain thickness
    – __________mm
  • Minimum PFM thickness= NON-CONTACT AREAS
    – __________mm (______mm porcelain, ________mm metal)
  • Optimal PFM thickness= CONTACT AREAS
    – __________mm (________mm porcelain, _____mm metal)
A
  • Minimum metal thickness
    – 0.5mm à at the margin
    – 1.0mm à non contact areas
    – 1.5mm à contact areas
  • Minimum porcelain thickness
    – 1.5mm
  • Minimum PFM thickness= NON-CONTACT AREAS
    – 1.5mm (1.2mm porcelain, 0.3mm metal)
  • Optimal PFM thickness= CONTACT AREAS
    – 2.0mm (1.5mm porcelain, 0.5mm metal)
75
Q

Reduction= amount of occlusal tooth structure
removed during the preparation

A

1.5 – 2mm

76
Q

which margin provides the best marginal seal?

A

Featheredge

77
Q

Light Chamfer
* ________ mm thick
___________ restorations

A

Light Chamfer
* 0.3-0.5 mm thick
* Gold crowns

78
Q

Heavy Chamfer
* ________ mm thick
* ___________ crowns

A
  • 1.0-1.5 mm thick
  • PFM crowns and some all-ceramic crowns
79
Q

Shoulder
* __________ mm thick
* ___________ restorations

A

Shoulder
* 1.0-1.5 mm thick
* Porcelain of PFM restorations

80
Q
  • Occlusal point contacts preferred to be __________
    and ____________ to prevent wear
A

broad and flat

81
Q
  • NEVER USE
  • Bad hygiene
A

Saddle/Ridge-Lap

82
Q
  • Anteriors
  • Good esthetics
A

Modified Ridge-Lap

83
Q
  • Anteriors
  • Superior esthetics
  • Requires surgery
  • Requires good ridge
A

Ovate

84
Q

____________ connector is indicated when it is impossible to obtain a common path of insertion between abutments

A
  • Nonrigid
85
Q

Connectors for PFM bridges should have a
minimum of _________mm height

A

3mm

86
Q

Impregnated cords
* AlCl=
* FeSO4=

A

Impregnated cords
* AlCl= Hemodent
* FeSO4= ViscoStat

87
Q

High acuurate impreesion material?
Most inccurate impression material?

A

Agar
Algiante

88
Q

Setting Time increases/ decreases?
* Cold water
* More water

A

↑ Setting Time
* Cold water
* More water

89
Q
  • Imbibition=
  • Syneresis=
A
  • Imbibition= absorption of
    water
  • Syneresis= loss of water
90
Q

__________ impression material is
– Hydrophilic
– Imbibition
___________ min to pour

A

Polyether
* 60 minutes to pour

91
Q

Best fine detail, elastic recovery, dimensional stability

A

Addition Silicone (PVS)

92
Q

Inhibited by the sulfur in
latex gloves and rubber dam

A

Addition Silicone (PVS)

93
Q

↑ Water
* __________ strength
* __________ porosity
* ____________expansion
* ____________ setting time
* _________ spatulation time

A

↑ Water
* Less strength
* More porosity
* Less expansion
* Increased setting time
* decreased spatulation time

94
Q

Gypsum
* _______ second vacuum mix or _________ second hand spatulate
* Setting time is __________ minutes
* Disinfect with

A

Gypsum
* 20 second vacuum mix or 30 secondhand spatulate
* Setting time is 45 to 60 minutes
* Disinfect with 1:10 bleach solution,
glutaraldehyde, or iodophor spray

95
Q

Ability to resist fracture during pulling is ___________ strength

A

Tensile Strength

96
Q

Deforms easily under tensile strength is called
eg:

A

Ductility
* Deforms easily under tensile strength
* Wires are prime example

97
Q
  • Ability to be burnished
    eg:
A

Percentage Elongation
* Gold is prime example

98
Q
  • Deforms easily under compressive
    stress
    eg:
A

Malleability
* Deforms easily under compressive stress
* Gold is prime example

99
Q

Coefficient of Thermal Expansion
– Composite-
– Amalgam -
– Gold-
– Tooth-
– Porcelain-

A

– Composite 30 (unfilled resin is worst)
– Amalgam 25
– Gold 14 (best)
– Tooth 11.4
– Porcelain 6

100
Q
  • Bis-Acryl Composite=indirect/dirsect material?
A

direct

101
Q

Provisional cements have __________ which
inhibits polymerization of resin

A

Eugenol

102
Q

Metal-Ceramic Failures
* Adhesive failures (between _________materials)
– Porcelain-metal if _______
– Oxide-metal if
– Porcelain-oxide if
* Cohesive failures (between _______ material)
– Porcelain-porcelain if
– Oxide-oxide if
– Metal-metal if _______ material

A

Metal-Ceramic Failures
* Adhesive failures (between different materials)
– Porcelain-metal if oxide was not formed
– Oxide-metal if metal is contaminated
– Porcelain-oxide if porcelain is contaminated
* Cohesive failures (between same material)
– Porcelain-porcelain if inclusions or voids
– Oxide-oxide if oxide layer is too thick
– Metal-metal never happens

103
Q
  • Glass-infiltrated ceramics are etched with __________ and treated with __________ and bonded to the tooth
  • Ceramics with no glass content (zirconia and alumina) are luted to the tooth with ________
A
  • Glass-infiltrated ceramics are etched with
    hydrofluoric acid and treated with silane coupling
    agent and bonded to the tooth
  • Ceramics with no glass content (zirconia and
    alumina) are luted to the tooth with cement
104
Q

Porcelain veneer
* ______mm gingival third reduction
* _________mm facial reduction
* ________mm incisal reduction
* __________ preparation

A
  • 0.3mm gingival third reduction
  • 0.5mm facial reduction
  • 1-2mm incisal reduction
  • Intra-enamel preparation
105
Q

Maryland Bridge
* Conventional bridge requires more removal of ___________
* Resin-bonded bridge can experience __________

A

Maryland Bridge
* Conventional bridge requires more removal of
tooth structure
* Resin-bonded bridge can experience debonding

106
Q

Color appears different under different
lighting

A

Metamerism

107
Q

________K and ________% CRI is ideal light

A

5500K and 100% CRI is ideal light

108
Q

Opalescence
* Light effect of a translucent material
appearing ________ in reflected light and ________in transmitted light

A

Opalescence
* Light effect of a translucent material
appearing blue in reflected light and redorange in transmitted light

109
Q
  • Value first - seen at __________in crown
  • Chroma second
  • Hue last
A
  • Value first - middle third of crown
  • Chroma second - cervical third of crown
  • Hue last - incisal third of crown
110
Q

Object emits visible light when exposed to ultraviolet light is called

A

Fluorescence

111
Q

Staining=__________ of fluorescence and _________ metamerism, usually decreases value

A

Staining= loss of fluorescence and increases
metamerism, usually decreases value

112
Q

You can always add more color and make
something __________, but not the reverse

A

You can always add more color and make
something darker, but not the reverse

113
Q

Order to to follow after crown delivery from lab:

A
  1. Shade (esthetics)
  2. Proximal contacts
    – Open à send crown back
    – Heavy à adjust before moving on
  3. Margins
  4. Fit
  5. R&R form
  6. Occlusion
  7. Contour
  8. Cement
114
Q

Zinc Polycarboxylate
* Chelation to ______
* __________ pulpal irritation

A

Zinc Polycarboxylate
* Chelation to calcium
* Minimal pulpal irritation

115
Q

Resin Modified Glass Ionomer
* _________ strength and __________ solubility than GI
Not to be used with __________ crowns due to __________ (exception to this rule is __________)

A

Resin Modified Glass Ionomer
* Higher strength and lower solubility than GI
Not to be used with all-ceramic crowns due to
expansion from water absorption (exception
to this rule is zirconia)

116
Q

Self-adhesive resin ____________ restorations

A

Metal
PFM
Zirconia
All-ceramic

117
Q

Conventional resin

A

All-ceramic
Some zirconia

118
Q

– Gypsum-bonded investments -
– Phosphate-bonded investments -
– Silica-bonded investments -

A

– Gypsum-bonded investments à gold
– Phosphate-bonded investments à PFM
– Silica-bonded investments à base metal

119
Q
  • Melting metal into the investment is called
A

Casting

120
Q
  • Very hot cast metal immediately placed in cool water to make more ___________for finishing
A

Malleable

121
Q

Porosity Issues
* Porosity of porcelain -
* Porosity of acrylic -
* Shrinkage porosity of metal -
* Back-pressure porosity of metal-

A

Porosity Issues
* Porosity of porcelain à inadequate condensing of porcelain
* Porosity of acrylic à too fast heating
* Shrinkage porosity of metal à too thin sprue prevents molten metal from flowing effectively into the mold
* Back-pressure porosity of metal à too short sprue prevents venting of gas, gas was still present in an area prohibiting fluid from flowing in

122
Q

Thering claspis used when theundercut is _________ to the bounded edentulous space(BES) and not _________ the tooth.

A

Thering claspis used when theundercut is adjacent to the bounded edentulous space(BES) and not across the tooth.

123
Q

Akers claspsare the most commonly used design and uses a retentive and reciprocal arm that engages an undercut _____________from the bounded edentulous space.

A

away

124
Q

ideal amount of taper for a crown preparation is ___________°

A

6°-10°

125
Q

a high elastic modulus indicates a ______material

A

morestiff

126
Q

Characterizationis the act of reproducing __________ defects on a crown

A

natural

127
Q

Feldspathic porcelainis a predominantly glass-ceramic material that is_______ esthetic but has a__________ flexural strength

A

highly, low

128
Q

When preparing teeth for veneer placement, extension of thepreparation into ________can result indecreased resin cement bond strengthand thus should be avoided.

A

dentin

129
Q

When the bond surface is more than 50% in dentin, the risk of veneer failure is __________.

A

high

130
Q

Does error in shade matching affects the Opaqueness crown? yes/no?

A

NO

Anerror inshade matchingmay change the value and hue of the crown, butshouldnotaffect the opaquenessof the crown.

131
Q

adhesives containzinc, whichcan cause __________ if used excessively.

A

neuropathy

132
Q

The alveolar bone of themaxillaresorbs in a___________ direction. The resorption pattern of themaxillacauses the arch to also becomeprogressively _______________.

A

superoposterior
Narrower

133
Q

The alveolar bone of themandibleresorbs in an_________________ direction. The resorption pattern of themandiblecauses the arch to also becomeprogressively _________________.

A

inferoanterior
wider

134
Q

Chroma

A

saturation or intensity of color

135
Q

____________is a rare-earth ceramic that is often added tozirconiaas a stabilizing agent.

A

Yttria

136
Q

3Yis the ____________ and most ____________, while5Yis the ___________ and most _____________.

A

3Yis the strongest and most opaque, while5Yis the weakest and most translucent.

137
Q

______________refers to the circumferential band of tooth structure in crown preparationsthat helpsprevent fracture.

A

Ferrule

138
Q

To observe the rule of the ferrule,at least _________________mmof coronal tooth structure must be maintained.

A

1.5 mm to 2.0 mm

139
Q

__________curedresins aremore porousthan ____________resins due to their higher amount of excess residual monomer.

A

Chemically
heat-cured

140
Q

The best way to curedenture acrylicin order to preventcandida growthis ____________.

A

to performinjection molding with heat cure resin

141
Q

The___________ of a post is theleastpractical to improve the post’s retention.

A

diameter

142
Q

Primary stress baring areas
Maxilla-
mandible-

A

Maxilla-alveolar ridge and palate
Mandible- buccal shelf

143
Q

Secondary stress-bearing area
Max-
Man-

A

Max- tuberosities, rugae
Man- Residual ridge

144
Q

The maxilla and mandible can be related together with an_______________ ,nota facebow.

A

interocclusal record

145
Q

CAD/CAM dentistry plays an important role in ______________ analysis during prosthodontic treatment planning.

A

occlusal

146
Q
A

Oral pathology (14 decks)

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