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23/24 Complete Dentures > 1 - VDO Introduction, Jaw Relation Records, Gothic Arch Fabrication > Flashcards

1 - VDO Introduction, Jaw Relation Records, Gothic Arch Fabrication Flashcards

1
Q

jaw relation records are taken during which appointment

A

appointment 3

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2
Q

what is used to determine where teeth ome together in completely edentulous patients? what cannot be used?

A

occlusion determined by joint position and anatomical landmarks

MIP can no longer be used

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3
Q

wax rims are adjusted for what

A

esthetics, phonetics, and function

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4
Q

what is determined intraorally to determine patient VDO

A

freeway space

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5
Q

CR record is made with ___ and then articulated with ___

A

wax rims; face bow

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6
Q

natural teeth are suspended into bone by ___ which acts as shock absorber

A

PDL

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7
Q

denture deeth are part o denture base which rests on what

A

movable/displaceable tissues

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8
Q

premature, deflective contacts between artificial teeth cause movement of denture resulting in what

A

damage to supporting tissues

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9
Q

what are the goals of complete deture occlusion

A
  1. limit trauma to supporting tissues
  2. preserve remaining structures
  3. creaete stability of dentures
  4. restore esthetics, speech and mastication (function)
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10
Q

what type of occlusion for edenlous pt

A

bilateral balanced occlusion

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11
Q

what are simultaneous contacting of the maxillar y & mandibular teeth on the right & left in the anterior & posterior occlusal areas when the jaws are in centric or eccentric relations

A

bilateral balanced occlusion

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12
Q

in order to establish balanced occlusion, we must transfer patient’s maxilla-mandibular relationship to what

A

semi-adjustable articulator

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13
Q

what records the orientation of the maxilla to the terminal hinge axis

A

face bow (ear bow)

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14
Q

what provides the same relative opening axis on the articulator as the mandible to the TMJ

A

terminal hinge axis

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15
Q

what is a hypothetical line thru two mandibular condyles around which the mandible may rotate

A

hinge axis

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16
Q

what is difficult to determine in edentulous patients and requires special armamentarium (fully adjustable articulator)

A

true hinge axis

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17
Q

arbitrary hinge axis will place the position how many mm of the true hinge axis

A

+/- 6 mm

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18
Q

ear bows use what as reference point for arbitrary hinge axis

A

external auditory meatus

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19
Q

what refers to the length of the face

A

vertical dimension

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20
Q

what is the distance between 2 points (a fixed point at tip of base of the nose and on the movable mandible, usually chin)

A

vertical dimension

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21
Q

what is the length of the face when the teeth are separated and the mandible is in physiologic rest position

A

VDR

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22
Q

is VDR equal to VDO

A

NO

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23
Q

what is campers plane

A

bottom of ala of nose to top of tragus

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24
Q

what is interpupillary line

A

line drawn parallel from right pupil to left pupil

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25
Q

nasolabial angle # averages for men and women

A

men: 90-95 degree
women: 95-105 degree

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26
Q

how many mm below the lip line should the mx wax rip contour be

A

102 mm below lip line

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27
Q

should mx wax rim protrude the lip?

A

NO! should have natural nasolabial angle

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28
Q

should mx wax rime be longer than commissure

A

no

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29
Q

do male or female show more tooth exposure with relaxed lip

A

females

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30
Q

do male or female have longer lip and have less visible teeth

A

males

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31
Q

T/F: the younger the person, the mx anterior teeth are less visible

A

FALSE! the older the person!

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32
Q

what can be used to verify length of maxillary wax rim

A

fricative sounds. mx wax rim should contact wet dry line on lower lip with “f” sounds

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33
Q

adjust plane of MX wax rim so that ___ is parallel to campers plane

A

fox plane/occlusal plane

34
Q

adjust plane of mx wax rim so that ___ is parallel to interpuppillay line

A

fox plane/occlusal plane

35
Q

what is located on mandibular arch and is the terminal end of the denture on the alveolar ridge

A

retromolar pad

36
Q

mandibular occlusal plane cannot be above what

A

1/2 way up the retromolar pad

37
Q

what is chiasma of facial muscles held together by fibrous tissue lateral and superior to each angle of the mouth

A

modiolus

38
Q

what is the meeting place of the buccinators and other facial muscles near the mouth angle

A

modiolous

39
Q

what happens to modiolus when teeth are loss

A

modiolus is displaced and give appearance of sunken cheeks

40
Q

what surface on which denture must be thing to avoid modiolus from lifting denture

A

buccal surface of lower denture at premolar region

41
Q

VDR is how many mm GREATER (an average) than VDO

A

VDR is 2-4 mm greater than VDO

42
Q

in natural dentition the teeth are separated and the degree of separation (2-4 mm) is called what?

A

freeway space

43
Q

when inserting maxillary record base for VDR, what do you instruct patient to do

A

instruct patient to lick their lips and swallow
open wide to fatigue, wet lips, swallow and relax
say “m” or “emma” or hum
swallow and relax

44
Q

how many VDR measurements do you take

A

3

45
Q

lower wax rim needs to be adjusted (shortened) until patient closes into a position 2-4 mm [more OR less] than vdr

A

LESS

46
Q

what sounds to test for freeway space

A

pronounce the sibilant sounds “s”,”J”,”ch”, and “z”
sister sarah, count from sixty to seventy

47
Q

what sounds to test for VDO lip competency

A

plosive “peter picked a pickled pepper”

48
Q

___ -occlusion of opposing teeth when the mandible is in centric relation which may or may not coincide with maximum intercuspation

A

centric occlusion (CO)

49
Q

___ - a maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their respective discs in their most anterior superior position against the slope of the articular eminences

A

centric relation (CR)

50
Q

___ with teeth present is a tooth to tooth relation whereas ___ is a static position with a bone to bone relation

A

centric occlusion; centric relation

51
Q

wax rim measurements

A

anterior: 5 mm width
premolar: 7 mm width
molar: 10 mm width

anterior height (maxillary): 22 mm, 6 mm posterior
anterior height (mandibular): 18 mm, 1/2 way up pad

52
Q

where do you measure VDO on manikin? what is the length?

A

gray to gray on magnetic plates; 40-42 mm

53
Q

what do you mark on maxillary cast other than midline

A

alar width of the nose
commissure of the lip and smile line
mark line posterior to the canine

54
Q

where do you remove wax on mandibular wax rim

A

2-3 mm posterior to canine and anterior to second molar position

55
Q

what do you place in maxillary wax notches so wax doesn’t stick to both rims

A

vasoline

56
Q

what can be used for CR record

A

alu wax (in lab)
super paste, clone bite or alu wax (in clinic)

57
Q

do we place aluwax on maxillary or mandibular wax rim

A

mandibular

58
Q

how do you verify CR record

A

re insert
the wax rim and have the
patient open and close
gently. Watching to
ensure the patient is
closing into the same
position

59
Q

where to place springbow ear parts on manikin

A

approx 1 inch below the division of top half and bottom half

60
Q

do we establish VDR or VDO ffirst

A

VDR then VDO

61
Q

pin or flat end down on aritculator

A

flat end for denures

62
Q

we are measuring mandibular movement with what

A

gothic arch tracer

63
Q

for gothic arch tracing, you should draw a line where on mandibular arch cast

A

draw a line from base of retromolar pad to base retromolar pad and depth of the vesibule

64
Q

where do you draw a plus sign on mandibular cast for gothic arch tracing? what is this for

A

mark a plus sign in center between two lines. this is where the stylus will line up

65
Q

how flat should max record base be for gothic arch

A

flat enough for the plate to lay flat

66
Q

what is this

A

plastic piece with bomb site (goes on maxillary plate)

67
Q

what does bevel on bomb site always face

A

stylus/tongue

68
Q

what is this

A

mandibular stylus

69
Q

what is this

A

maxillary plate

70
Q

how to tell between anterior and posterior on mandibular stylus

A

anterior = shorter
posterior = longer

71
Q

how to tell between anterior and posterior on maxillary plate

A

anterior = smaller
posterior = more bulgy and screw is in this area

72
Q

what do you cut into the sides of maxillary and mandibular gothic arch things

A

notches

73
Q

if stylus on mandible and bomb site on maxillary, where does arrow point

A

posteriorly

74
Q

if stylus on maxillary and bomb site on mandible, where does arrow point

A

arrow points anteriorly

75
Q

for mand gothic arch plate, does poin point towrds mandible or maxilla

A

maxilla

76
Q

stylus must sit up approximately how many mm from mandibular metal piece

A

5 mm

77
Q

one full turn of stylus (360 degrees) equates how many mm

A

1 mm

78
Q

gothic arch tracer has to be made at where

A

patient’s vertical dimension

79
Q

need minimum ___ mm space between upper and lower wax rims to allow space for plaster or PVS material

A

5 mm

80
Q

pin on ___ has to touch ___ when gothic arch tracers are on casts

A

hanau; incisal guide

81
Q

pin on ___ has to touch ___ at patient’s vertical dimension

A

mandibular arch; maxillary arch

23/24 Complete Dentures (6 decks)

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