CD2 Flashcards
Importance of trial denture visits
allowing patient to view tooth arrangement and make
changes if needed
Patient complains something is wrong with my dentures. I don’t know what it is. The most likely reason could be
- Occlusion
- Esthetics
- Retention
- Occlusion
During insertion appointment
- Insert U/L w/o occluding
- 1st CR verification
- initially adjust both dentures separately
- initially adjust both dentures separately
CR recording in trial denture is by ?
- I/O wax record (Dead soft wax similar to Aluwax) ,
Injectable bite registration material
Not an alterable factor • H overlap of Ant teeth • V overlap of Ant teeth • CR • Cusp height of Post teeth • Curve of plane
CR
others are alterable
(?) All the things to be accomplished before a clinical remount, except:
- lab remount,
- mounting max cast with facebow preservation
- mounting mand cast with CR
mounting mand cast with CR
To accomodate teeth in record base, the preferred sequence would be-
1) grind the lower record base
2) create a window in record base
3) grind the tooth
Heel interference is seen in lab during lab remount . Treatment?
- reduce mand distal area, not maxillary as perforation in maxillary denture can cause loss of suction & cohesion
CO ≠ CR at intermaxillary records at trial denture appointment. What will you do next?
a. remount max and mand cast at new CR
b. remount mand with new CR
c. check VDO and occlusion
d. Check for movement of record base, remount mand cast with new CR
d.Check for movement of record base, remount mand cast with new CR
(Remount and Re-set teeth at try-in)
NOTE: If monoplane- occl adjustments may be
done intraorally and then new CR record
for remount
Patient was wearing Interim dentures for 3 weeks. The U/L dentures become loose. How will you treat?
- soft chairside reline both dentures, with the more unstable denture first against the relatively stable denture. Recall in 1 month.
A patient fractured a new denture with exceptional occlusion, VDO and esthetics. Treatment?
- repair first and then rebase (definitive)
Reline and rebase impressions are done in function, after occlusion is checked.T/F
T
Surgical stent is used for ? (interim fabrication)
1.used to recontour soft and hard tissues during extraction visit. (Use guide to check for
blanching)
2.represents the intaglio surface
Not a contraindication for immediate dentures
- Uncontrolled hypertensive patient
- controlled diabetes
- blood coagulation disorders, difficult wound healing
- radiation in the head and neck area
controlled diabetes
4 years old denture which is loose but has good VDO & occlusion. Treatment
- reline with pressure cure (hard?) acrylic
~1-3yrs lifespan
True about tissue conditioners if left for too long
1.will cause mechanical injury to
tissue
2. Will cause infection due to colonization (2 correct answers)
Tooth selection . Best choice for a 45 years old female patient with upper natural dentition-
- IPN 30 degrees
Severely resorbed mand ridge for an overlay denture. Upper complete denture in a bruxer. Teeth selection
- IPN U-12 degrees, L-0 degrees
What will you modify to enhance balance in a Class III CU/CL denture in lateral excursions?
- Curve of wilson
- Curve of spee,
- Height of cusps,
- all of the above
Curve of wilson
Advantage of staging extractions in Interim/Immediate dentures is -
- allow healing time between appointments
2. better predictability in terms of VDO (2 correct answers)
Patient complains of muscle fatigue after a recent rebase. Most probable cause -
Increased VDO
Generalized redness on the ridge. Least probable cause
- Poor denture base fit,
- Increased VDO,
- Denture acrylic allergy,
- Patient did not remove denture
-Denture acrylic allergy
Burning sensation in anterior palate. Least probable cause
a. overextension of labial flange
b. anterior teeth too palatally placed
c. lower ant touching the palate
d. pressure on incisive papilla
a.overextension of labial flange
True about pick up impression
- allows you to take impression with the prosthesis in
mouth
Ridge lapping
Ridge lapping means when the tooth is too tall, you reduce from the lingual at the same
curve as the ridge to compensate the thin base and window made.
Least likely cause for difficulty in swallowing
Palatal portion too thick, ↓ Space of Donders
Most common cause for difficulty in swallowing:
Maxillary or mandibular
posterior too long or too thick
4 laws of denture occlusion
- No anterior contact in CR,
- No anterior guidance in protrusion,
- No canine guidance in lateral excursion ,
- CO=CR
Best to worst CD Occlusion scheme
- Bilateral balance, Group function , canine guidance
Objectives of clinical remount
- Maintains VDO,
- occlusal contacts
- all of the above
all of the above
Purpose of lab remount
correcting processing errors to restore VDO
During lab remount, The technician noticed that there was not contact on right side in
protrusion. The VDO was okay. Choose the correct answers (2 correct options )
- Check for debris between the cast and mounting ,
-Send the articulator to the dentist to
further evaluate and find the cause
Disadvantage of gothic arch
lower lingual plate can cause tongue interference in
registering CR
Gothic arch is used to ensure-
a. CR
b. VDO
c. Tooth position
d. Both a and b
d. Both a and b
(a. CR
b. VDO )
Shape of gothic arch tracing -
arrow
Least probable cause for a single sore spot
a. Occlusion
b. Acrylic bleb
c. Denture base
d. VDO
d.VDO
In case of a gagging patient,what armamentarium would not be required to determine the cause- a.Articulating paper b.Post dam c.Sorenson’s paste d.Indelible pencil e.Pressure on maxillary anteriors
a.Articulating paper
Least likely cause in patient experiencing difficulty in swallowing -
a. ↑ VDO
b. Overextended DL flange of lower
c. Thick palatal acrylic
d. Teeth set edge to edge
d.Teeth set edge to edge
Most probable cause for cheek biting with denture
- teeth set edge to edge
Patient has severely resorbed ridges. What modifications can you do to prevent anterior
guidance
a. ↑Horizontal overlap
b.↓Vertical overlap
c.Give curves on monoplane teeth
d. ↑Cuspal height and set teeth on curves
Answer-a,b and c
(?) 85 years old patient with atrophic ridges complains of numbness and tingling. What is the
first step for a long term definitive treatment ?
a.tissue conditioners continuously
b.ridge augmentation
c. remove prosthesis indefinitely
d. Hard reline
d. Hard reline
During clinical remount for a monoplane setup, there’s interference in posterior. VDO okay. What are the steps for occlusal equilibration ?
a. flatten occlusal plane
b. lower post teeth second to 2⁄3 RMP
c. If excessive tooth reduction in D is required, grind C & D both ,not lower than 1⁄2 RMP
d. All of above
e. a and b
d. All
a. flatten occlusal plane
b. lower post teeth second to 2⁄3 RMP
c. If excessive tooth reduction in D is required, grind C & D both ,not lower than 1⁄2 RMP
Working interference in anatomic setup. To correct, reduce (2 correct options)
BULL
- Buccal of upper, Lingual of lower
ML cusp of right maxillary 1st molar makes contact in CR but not in eccentric. Treatment
- correct/grind the fossa of opposing right mand 1st molar
2 correct statements- 1)In anatomic setup,the palatal cusps of maxillary molars are inline with the mandibular crest of ridge line 2) The anatomic setup is lingualized to reduce/prevent lateral shearing forces
2 correct statements- 1)In anatomic setup,the palatal cusps of maxillary molars are inline with the mandibular crest of ridge line 2) The anatomic setup is lingualized to reduce/prevent lateral shearing forces
In monoplane setup, the mandibular posterior teeth are centered to the ridge.t/f
t
Consequences of wax on teeth during flasking - a.Tooth fallout and movement below occlusal plane b.Acrylic on teeth c.Tooth can loosen during boil out d. All of above
d
Vertical can be held in reline by
a. Metal land of flask
b. Jig
c. Articulator
d. Intraoral relation of teeth
a,b,c
In most clinical situations,the high smile line is used to determine the CEJ and the ht. Of
maxillary central incisors. Fricatives are used to determine the position of incisal edges
of mand incisors.
- First statement is true,second is false
Least acceptable to modify if you get incisal guidance . a.Incisal edge of maxillary incisor b.Incisal edge of mandibular incisor c.Labial of mand incisor d.Lingual of max incisor
a.Incisal edge of maxillary incisor
Anterior contact is acceptable in CR as long as there is simultaneous bilateral posterior
contact . Anterior contact in protrusion is acceptable as long as there is bilateral posterior
contact.
First statement is false, second is true
This material, white in colour ,is used in static manner to check the intaglio.
- PIP
New denture,patient experiences clicking . Most probable cause-
↑VDO
The intaglio surface of a CD should be well-polished.
The cameo surface(polished
surface ) should be convex overall.
t/f
- Both statements are false
The fit of the intaglio surface is different before clinical remount and after insertion. t/f
False
Clinical remount in anatomic setup is not required if you get acceptable results in lab
remount. - t/f
f
