Delivery of CD

Question 1

The adjustment of processing error is

done through:

Answer 1

ØLaboratory remounting
ØSelective grinding
ØDenture base finishing

Question 2

Clinical Evaluation of the Denture

Answer 2

ØChecking the border extension
ØChecking the support
ØChecking the retention and stability
ØChecking the occlusion

Question 3

The pressure indicator paste is especially helpful when

Answer 3

bilateral undercuts
on the residual ridge interfere with the initial
placement of dentures or when pressure spots
are present or suspected in the final impression

Question 4

Reading PIP

Answer 4

• Burn through (No paste left)
– Excessive pressure that should be relieved
• Streaks remaining
– No tissue contact
– Other areas need to be relieved
• Paste remaining with no streaks
– Acceptable contact

Question 5

Paste Removal

Answer 5

• Gauze, cotton rolls, brushes
• Alcohol for stubborn areas
• Rinse and replace denture

Question 6

Test for the retention and peripheral seal of the

anterior labial part by

Answer 6

applying vertical

downward force on the anterior region

Question 7

Test for the posterior palatal seal

Answer 7

• By applying upward and outward pressure on

the cingulae of the upper incisors.

Question 8

Test for the seal at the tuberosity area

Answer 8

• By applying upward and outward

pressure at the opposite canine region.

Question 9

Test the retention for the lower denture

Answer 9

• Applying an upward force, bearing in mind
that the extent to which retention can be
developed in the lower denture is commonly
less than that of an upper.
• If the retention is poor then the base must be
corrected.

Question 10

Occlusal disharmony (Error)
Errors in occlusion can result from:-

Answer 10

ØClinical errors.
ØErrors in mounting models on the articulator.
ØDuring processing of the dentures.

Question 11

One of the following methods may be
used for correcting occlusal disharmony by
selective grinding

Answer 11

Ø Intraoral methods.
Ø Remounting .
Ø New jaw relationship records.

Question 12

ØArticulating paper alone will not give as

accurate indication because:-

Answer 12

ØThe resiliency of the supporting tissues
ØThe denture bases can move from the basal
seat.
ØTo place articulating paper on one side of the
arch may induce the patient to close to or
away from that side.

Question 13

ØThe use of abrasive paste in the mouth has

many disadvantages:-

Answer 13

ØThe shifting of the base a result of a premature
contact
ØCusps that maintain the occlusal vertical
dimension may be destroyed.
ØAbrasive paste is not selective.

Question 14

Disadvantage of the intra-oral method

Answer 14

Shifting of the dentures over resilient
supporting tissues in eccentric jaw
positions will give false markings.

Question 15

Clinical Remounts Save Time

Answer 15

• Allows identification of interferences
not seen intraorally
– Reflex avoidance caused by:
• Pain
• Instability of the dentures
• Fewer adjustment appointments

Question 16

• In the posterior segment the surfaces to
  be reduced are selected according to
  two basic rules

Answer 16

• If the cusp is high in both centric and eccentric
  occlusion, reduce the cusp.
• If the cusp is high in centric but not in
  eccentric occlusion, deepen the fossa.

Question 17

ØIf the anterior dentition is found to be in
traumatic contact reduce the traumatic areas
of contact using the following rules:

Answer 17

ØReduce the lingual surfaces of the maxillary
incisal edges.
ØReduce the labial surfaces of the mandibular
incisal edges.

Question 18

Denture adhesives

Answer 18

ØA temporary measure to provide increased
retention of dentures
ØAnalgesic ointments – increase the vertical
dimension of the denture

Question 19

Chemical cleaning

Answer 19

• Sodium hypochlorite

* White vinegar