Relining, Rebasing, and Repairing RPD

Question 1

The most basic of the RPD maintenance techniques
-It involved adding new denture base material to the existing resin to make up for loss of tissue contact caused by resorption of the alveolar ridge

Answer 1

Relining

Question 2

What is the best way to evaluate the space under the denture base?

Answer 2

Runny alginate impression (1 powder; 2 hot water)

Question 3

If at least ___ mm of alginate is present under the denture base or if indirect retainer lifts, the patient can be considered a candidate for a reline or rebase

Answer 3

2 mm

Question 4

The amount of space under the _____ is an indicator of the amount of space to be found under the denture base

Answer 4

Indirect retainer

Question 5

Resin base is prepard for a reline impression by ______

Answer 5

Removing a uniform amount of denture resin from the intaglio surface of denture base

Question 6

Why is resin removed from denture base for impression reline?

Answer 6

Adequate space

Retention/Bonding

Question 7

In case of ___ tissue on crest of ridge, use free-flowing zinc oxide eugenol impression material

Answer 7

Mobile tissue

Question 8

In case of _____ denture base tissue, use any of the other normal impression materials (VPS)

Answer 8

Dense firm tissue

Question 9

_____ materials may also by used as impression material for reline although there is no advantage and can easily distort

Answer 9

Tissue conditioning materials

Question 10

The most critical step in the reline procedure is the maintenace of the ___ relationship during set of impresion

Answer 10

Tooth-framework

Question 11

Should the patient close teeth into contact during reline impression?

Answer 11

No

Question 12

SMall defects in the impression can usually be corrected with _______

Answer 12

Mouth temp wax

Question 13

HOw long will the mouth temp wax take to act properly?

Answer 13

12 minutes

Question 14

_____ are inferior to lab relines
Use chemically activated resins that are intended to be used for the intraoral reline
-porous and lack color stability

Answer 14

Intraoral reline

Question 15

____ is a lab technique in which the bulk of the denture base is removed and replaced using new resin

Answer 15

Rebase

Question 16

Indications for _____:
Denture bases don’t extend to cover all of denture-bearing tissues
Denture base has fractured
Denture base has become irreparably discolored

Answer 16

Rebase

Question 17

The denture resin is ____ and ___ to allow room for readaptation of the borders with modeling plastci

Answer 17

Relieved and shortened

Question 18

When both denture base and denture teeth are involved in a maintenance or repair situation, the partial denture may need to be stripped of both teeth and denture base

Answer 18

Remake

Question 19

If 2 pieces of denture base fracture, what do you do to repair?

Answer 19

Lute the pieces together with sticky wax
Max a matrix under the area using dental stone
Relieve the area and add dovetails for retention of new resin
Add chemically activated resin to prepped line
Place in hot water pressurized pot
Finish and polish

Question 20

What is the purpose of the hot water pressurizer pot?

Answer 20

Decrease porosity

Question 21

What do you do if tooth pops out of denture base?

Answer 21

Matrix of teeth using PVS
Diatorics in tooth for retention of the acrylic
Relieve denture base
Add chemically activated resin
Finish and polish