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dentures final > the trial placement > Flashcards

the trial placement Flashcards

1
Q

this stage becomes a critical phase of complete denture care in evaluating this relationship

A

wax trial

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2
Q

significant appt for successful complete denture

A

trial placement

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3
Q

mutual satisfaction is needed before dentures are processed and change is difficult
-BOTH pt and dentist can see and evaluate

A

trial placement

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4
Q

subsequent steps convert dentures to acrylic resin which limits the possibility of

A

further correction

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5
Q

preliminary arrangement of denture teeth that has been prepared for placement into the patient’s mouth to evaluate esthetics and maxillomandibular relationships

A

trial denture

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6
Q

process of placing a trial denture into the patient’s mouth for evaulation

A

trial placement

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7
Q

clinical evaluation of trial denture. Why?

  1. _____ are crude approximations of positions of artifical teeth. contours are______
  2. ___ and ___ of teeth selected are based on anatomic averages
A

wax occlusion rims

arbitrary

shape and size

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8
Q

use what inside the trial bases

A

denture adhesive powder
(wet inside)

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9
Q

trial dentures clinical evaluatiion:
1
2
3
4
5
6
7

A
  1. OVD
  2. CO
  3. midline, vertical and horizontal overlap
  4. occlusal plane (horizontal)
  5. buccal corridor (natural dark space)
  6. phonetics
  7. overal esthetics (s sound)
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10
Q

-numerous methods suggested but all are unscientific
-should assess using a combination of methods for more accuracy

A

assessing OVD

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11
Q

normal 2-4 mm space between teeth when mandible in rest position

A

2-4 mm space= IOD (interocclusal distance)
PRP= IOD + OVD

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12
Q

stretch-relax method
(OVD assessment)

A

-dot on nose and chin
-open wide and hold for 20 seconds
-slowly close until lips first touch
measure distance between dots
-after 10-15 more seconds, close until teeth touch. measure dots again

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13
Q

swallow-relax method
(OVD assessment)

A

-patient is asked to swallow, then relax. teeth contact while swallowing, then separate upon relaxing
-note: teeth should not be in contact at PRP

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14
Q

closest speaking space
(OVD assessment)

A

rapid speech of sibilant sounds (S, CH)
“sixty six, san francisco, Kansas City Chiefs”

-should be NO contact of max and mand teeth when speaking

S SOUNDS

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15
Q

must verify that the casts are mounted correctly on the articulator

A

centric occlusion

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16
Q

make new interocclusal record in mouth and check it on the articulator

remember: either record base can move on soft tissue and the resulting occlusion may seem acceptable when its not

REMOUNT CASE IF NEEDED

A

trial placement- verify centric relation mounting

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17
Q

centric position contacts:

A
  1. check with articulating paper
  2. stabilize the mandibular denture
  3. new centric relation record
  4. minimal amount of recording medium
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18
Q

-teeth interdigitate perfectly
-NO SPACE AROUND THE CUSPS
-condylar ball should contact fossae wall

if either criteria not met, remake record

A

accurate mounting

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19
Q

-mandibular cast removed from mounting ring
-mounting plaster ground thinner
-cast remounted, using the new record

A

second record using to confirm inaccurate mounting

20
Q

_____ determined by esthetics/phonetics

A

anterior

21
Q

1-2mm incisor teeth visible

A

resting upper lip (level of occlusal plane anterior)

22
Q

displays most of teeth length, but. minimal amount of denture base

A

smiling

23
Q

_______should have positive contact with lower lip when fricative sounds (F V, very funny) are made

A

maxillary incisors

24
Q

should be slightly visible at lower lip

A

mand incisors

25
Q

mandibular molars at height

A

2/3 up RM pads

26
Q

occlusal plane posterior.
plane should be ____ below dorsal surface of resting tongue (below commisure of mouth

A

2-3 mm below

27
Q

occlusal plane posterior should be _____ the two residual ridges and usually bisects the _____ between the ridges

A

parallel

space

28
Q

occlusal plane:
max posterior teeth parallel ____

A

ala-tragus plane (campers plane)

29
Q

max posterior teeth (should/should not) appear to descend posteriorly

A

should not

30
Q

easier to assess - teeth have replaced bulky rims
crowded tongue space can adversely affect this

A

phonetics

31
Q

phonetics:

  1. S, CH- OVD
  2. F, V -incisors hit wet/dry line
A
  1. sibilant sounds
  2. fricative sounds
32
Q

-F, V, fifty-five
-ask patient to count from 50 to 60
- maxillary incisal edges should just touch the posterior 1/3 of the lower lip

A

fricative sounds

33
Q

speech- 5 components
1. lungs:
2. vocal chords:
3. pharynx, mouth, nasal cavity
4. mandible, tongue, lips, soft and hard palate, alveolar ridge and teeth convert sound into meaningful speech
5. a learned activity

A
  1. respiration
  2. phonation
  3. resonance
  4. articulation
  5. neurologic integration
34
Q

if teeth touch when speaking ______ sounds, occ vert. dimension is too far open

A

s sound

35
Q

if speaking space is excessive (more than 3 mm, then:

A

OVD is likely overclosed

36
Q

if patient whistles on sibilant sounds:

A

contour of anterior palate may be too narrow

37
Q

if patient lisps on sibilant sounds:

A

anterior palate may be too broad

38
Q

S
Z
T
CH
SH
sixty-six
mississippi

A

sibilant sounds

39
Q

incisors should approach end to end relationship

A

sibilant sounds

40
Q

-non-uniform OVERJET of anterior teeth
-diastemas betwen teeth
-palatal contours
-diamond-shaped openings between incisors

A

lisping

41
Q

posterior tooth position:

A

mediolaterally centered over denture-bearing area

42
Q

-records condylar inclination of patient
-is used to adjust articulator condylar angles
-is for BALANCED OCCLUSION SCHEMES ONLY.

A

protrusive record

43
Q

protrusive record is made ~ ___mm protruded

A

6

44
Q

this affects phonetics, comfort, and retention
-should not be slightly convex in shape
(dont make bulky)

A

denture base contours

45
Q

with denture base contours,

ensure that the denture base is not:

A

unduly thick or thin

46
Q

with denture base contours,

excess bulk will:
(feel between index and thumb)

base that is too thin will:
(should not be able to see through)

A

excess bulk will: impair comfort

base that is too thin will: be weakened

dentures final (9 decks)

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