The Trial Placement

Question 1

clinical evaluation of the wax trial denture

Answer 1

a complete denture is a mechanical object, much of which is fabricated outside the dental operatory. this mechanical object must function in a harmonious relationship between the mechanical and the biologic. the wax trial denture stage becomes a critical phase of complete denture care in evaluating this relationship

Question 2

Trial Placement (4)

Answer 2

– a significant appointment for successful complete denture
treatment
– both patient and dentist can see and evaluate what has been
created
Mutual satisfaction is needed before dentures are processed and
change is difficult.
Accept —Modify —or start over

Question 3

dentist should approach the appointment with the attitude that

Answer 3

errors max exist in all areas

Question 4

subsequent steps convert dentures to acrylic resin which limits

Answer 4

the possibility of further correction

Question 5

trial denture

Answer 5

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

Question 6

trial placement

Answer 6

the process of placing a trial denture into the patients mouth for evaluation

Question 7

wax occlusion rims are crude approximations of positions of artificial teeth. contours are —

Answer 7

arbitrary

Question 8

shapes and sizes of teeth selected are based on the anatomic —

Answer 8

averages

Question 9

dont overlook problems (3)

Answer 9

difficult/impossible to change after processing
may require removal, resetting, and reprocessing
procedures more costly and time consuming

Question 10

Use denture — — inside the trial bases

Answer 10

adhesive powder

Question 11

trial dentures clinical evaluation (7)

Answer 11

OVD
centric occlusion
midline, vertical and horizontal overlap 
occlusal plane
buccal corridor 
phonetics 
overall esthetics

Question 12

OVD

Answer 12

the distance measured between 2 points when the occluding members are in contact

Question 13

assessing occlusal vertical dimension (3)

Answer 13

numerous methods suggested
all methods are quite unscientific
should asses using a combo of methods for more accuracy

Question 14

OVD assessment

PRP (size)

Answer 14

2-4 mm space between teeth when the mandible is in PRP

Question 15

OVD assessment

stretch-relax method (4)

Answer 15

dot on nose and chin. open wide and hold for 20 s
slowly close until lips touch. measure distance between dots
after 10-15 more s, close unit teeth touch. measure dots again
difference in measurements is interocclusal distance (2-4 mm average)

Question 16

OVD assessment

Swallow relax method (2)

Answer 16

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

Question 17

OVD assessment

closest speaking space (2)

Answer 17

rapid speech of sibilant sounds (sixty six, san Fransisco, Kansas City chiefs, etc)
should be no contact of max and mand teeth when speaking

Question 18

centric position contacts (4)

Answer 18

check with articulating paper
stabilize the mandibular denture
new centric relation record
minimal amount of recording medium

Question 19

accurate mounting (3)

Answer 19

teeth interdigitate perfectly (no space around the cusps)
condylar ball should contact fossa wall
if either criteria not met, remake record

Question 20

second record used to confirm inaccurate mounting (3)

Answer 20

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

Question 21

level of occlusal plane

anterior (3)

Answer 21

anterior determined by esthetics/phonetics
resting upper lip: 1-2 mm incisor teeth visible
smiling: displays most of teeth length, but minimal amount of denture base

Question 22

occlusal plane/phonetics (2)

Answer 22

maxillary incisors should have positive contact with lower lip when fricative sounds are made
mandibular incisors should be slightly visible at the lower lip

Question 23

fricative sounds

Answer 23

F, V, very funny

Question 24

occlusal plane

posterior (3)

Answer 24

mandibular molars at height 2/3 up RM pads
plane should be 2-3 mm below dorsal surface of resting tongue
plane should parallel the two residual ridges and (usually) bisects the space between the ridges

Question 25

occlusal plane:
max posterior teeth generally parallel
max posterior teeth should not appear to descend

Answer 25

ala-tragus plane (campers plane)

posteriorly

Question 26

phonestics (2)

Answer 26

easier to asses (teeth have replaced bulky rims)

crowded tongue space can adversely affect phonetics

Question 27

sibilant sounds

Answer 27

S, CH- OVD

Question 28

fricative sounds

Answer 28

F, V- incisors hit wet/dry line of lip

Question 29

fricative sounds (3)

Answer 29

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

Question 30

speech- 5 components

Answer 30

respiration- lungs
phonation- vocal chords
resonance- pharynx, mouth, nasal cavity
articulation- mandible, tongue, lips, soft and hard palates, alveolar ridge and teeth convert sound into meaningful speech
neurologic integration- a learned activity

Question 31

phonetics- sibilants (2)

Answer 31

If teeth touch when speaking s sounds, OVD is too far open

if speaking space is excessive- more than approx 3 mm OVD, likely overclosed

Question 32

phonetics tests
if patient whistles on sibilant sounds
if patient lisps on sibilant sounds

Answer 32

contour of anterior palate may be too narrow

anterior palate may be too broad

Question 33

lisping (4)

Answer 33

non-uniform overjet of the anterior teeth
diastema between teeth
palatal contours
diamond- shaped openings between incisors

Question 34

Esthetics/Appearance

Midline centered on

Answer 34

superior 2/3 of face and head.

Visualize from 3 ft away.

Question 35

Esthetics/Appearance

Incisal plane parallels

Answer 35

interpupillary line

Question 36

Esthetics/AppearanceStand back and evaluate overall appearance –the various
(5)

Answer 36

harmonies of tooth size, form, position, arrangement, shade.

Question 37

Posterior tooth positions

— centered over denture-bearing area

Answer 37

Mediolaterally

Question 38

checklist (4)

Answer 38

CR verified with recording medium
VD verified (2-3 mm between lip closure and teeth touching, phonetics tests, lips appear and feel unstrained)
tooth form, arrangement and shade verified 
phonetics verified (S, F, M)

Question 39

protrusive record (4)

Answer 39

records condylar inclinations of patient
used to adjust articulator condylar angles
record is made approx 6 mm protruded
is for balanced occlusion schemes only. is not needs for non balanced schemes

Question 40

denture base contours affects (3)

Answer 40

phonestics
comfort
retention

Question 41

denture base contours should not be

Answer 41

slightly convex in shape

Question 42

excess bulk will impair

Answer 42

comfort

feel between index finger and thumb

Question 43

base that is thin will be

Answer 43

weakened

should not be able to see through

Question 44

lab prescription

request (3)

Answer 44

processing, finishing and polishing
lab remount of the dentures
adj of occlusion to compensate for processing changes