Resilient Processed Liners

Question 1

resilient liners:

a group of

Answer 1

elastomer polymers

Question 2

resilient liners:

used in a denture when a protective —

Answer 2

resilient surface is needed on the intaglio surface: sensitive mucosa, postradiation mucositis, poor supporting tissue, etc

Question 3

resilient liners (4)

Answer 3

 Xerostomia patients
 Hypersensitive mucosa
 Bruxers
 Knife-edge ridge / atrophy

Question 4

resilient liners are heat-processed to the denture base as a
“—” procedure

Answer 4

reline

Question 5

Elastic deformation of the liner allows the

material to

Answer 5

absorb energy/pressure of

occlusion, decreasing pressure on mucosa

Question 6

resilient liners

materials (4)

Answer 6

 Silicone elastomers
 Polyurethane elastomers
 Vinyl-acrylic polymers
 Rubber

Question 7

resilient liners: other uses (7)

Answer 7

 Ridge atrophy – mental foramina, sharp
ridges
 Surgery contraindicated (Implants not
possible or implant failure)
 Bruxers
 Restore congenital/acquired defects—can
engage undercuts with “resilient prosthesis”
 Xerostomia – irradiation, medications
 Relief areas – median palatal raphe
 Single mandibular denture

Question 8

Length of service ranges from

Answer 8

6 months to 5

years.

Question 9

in use, the elastic deformaiton of the resillient material

Answer 9

absorbs pressure that would otherwise be transmitted to sensitive tissues

Question 10

mental base dentures

An indication:

Answer 10

repeated fracture of a
conventional denture. Sometimes seen when
a single denture opposes natural dentition.

Question 11

metal-base dentures 
advantages claimed (6)

Answer 11

stronger, less likely to fracture 
less porous 
more accurate 
less deformation of base during function
better thermal conductivity 
better tissue tolerance

Question 12

metal-base dentures
advantages claimed (3)
disadvantage

Answer 12

 Better thermal conductivity
 Better tissue tolerance
 Less deformation of base during function

 difficult to reline

Question 13

cast metal bases

materials (3)

Answer 13

 Ni-Cr or Co-Cr
 Gold (Type IV)
 Aluminum

Question 14

tissue changes (4)

Answer 14

 Stresses of daily function
 Changes in general health status
 Hereditary factors
 Defects in dentures - produce changes in 
tissue form

Question 15

a procedure is needed every — after initial insertion

Answer 15

4-7 years

Question 16

why reline/rebase (3)

Answer 16

Fit of denture base to the foundation is
poor.
Denture is not stable and/or is non-
retentive.
Denture base is fractured, discolored, or
underextended.

Question 17

the purpose is to produce an

Answer 17

intaglio surface which fits the mucosa accurately

Question 18

tissues — from the original form of the denture base

Answer 18

depart

Question 19

purpose of a reline procedure is to

Answer 19

produce an intaglio surface which fits the mucosa accurately without affecting the occlusion or the OVD

Question 20

Relining – (2)

Answer 20

replacing the intaglio surface of
the prosthesis
Process of adding new resin to the intaglio
surface of a denture

Question 21

Rebasing –

Answer 21

replacing the entire denture

base(intaglio and cameo surfaces)

Question 22

during relining and rebasing occlusal relationship is…

Answer 22

not altered

Question 23

All of the existing denture base is replaced by

new resin =

Answer 23

Rebase

The occlusal relationship of the teeth is not
altered.

Question 24

when to reline?

Answer 24

Denture is not retentive, not stable.

Question 25

relining
existing – should be acceptable
occlusion acceptable at

Answer 25

OVD

CR (error, if present, is slight and is correctable)

Question 26

when to reline? (4)

Answer 26

existing OVD is acceptable
appearance of teeth and base acceptable
acceptable occlusion at CR (or error is slight and is correctable)
phonetics acceptable

Question 27

when not to reline? (4)

Answer 27

 Teeth grossly malpositioned / worn
 Occlusal plane errors
 Poor esthetics/phonetics
 OVD in error

Question 28

lining errors to avoid (5)

Answer 28

 Increasing the OVD
 Denture with impression material is not
fully seated in place  increases the OVD
 Allowing the denture to move forward
during reline impression step  alters the
occlusal relationships.
 Allowing maxillary denture to move forward
during impression step
 Occlusal relationship errors

Question 29

remove – undercuts

Answer 29

flange

Question 30

remove – of resin base

Answer 30

1-2 mm

Question 31

functional impression with lynal

Answer 31

1-2 hours, some leave for 24 hours

Question 32

static impression (5)

Answer 32

 Closed Mouth technique
 Patient occludes at OVD
 Functional movements made with tongue
 Removed moments later, not hours later
 Polysulfide, PVS, polyether, etc

Question 33

when to place the posterior palatal seal?

Answer 33

before processing

Question 34

children, young adults, acromegaly-

Answer 34

ridges increasing in size, relines needed often