Tissue Conditioners

Question 1

powdered polymer

Answer 1

polyethyl methacrylate or isobutyl methacrylate

Question 2

liquid

Answer 2

an ester (butyl phthalate or butyl glycolate) in an alcohol solvent

Question 3

tissue conditioners

Answer 3

lining the intaglio surface of a. denture with a conditioners improves retention and stability and relieves pressures. this allows the abused tissue to recover

Question 4

Polymer and monomer are mixed to make a
gel, then placed in denture -→ insert for

Answer 4

5
minutes.

Question 5

conditioners (2)

Answer 5

Self-curing & slowly polymerizing
 Versatile and easy to use

Question 6

used to treat (3)

Answer 6

 Chronic denture soreness
 Traumatized oral mucosa
 Remodeling ridges

Question 7

allow pt to continue

Answer 7

wearing dentures while allowing abused tissue to heal

Question 8

the sponginess of the material absorbs loads to the underlying residual ridge and allows the tissues to heal during

Answer 8

function

Question 9

loss of resilliency occurs as the

Answer 9

plasticizer leaches out -resin becomes stuff

Question 10

material should be renewed

Answer 10

once or twice per week if treating irritated tissue

Question 11

If not renewed, the resin becomes

Answer 11

stiff and
produces the same tissue abuse that it was
placed to treat

Question 12

tissue conditioner uses (4)

Answer 12

 Prevent or treat chronic denture soreness
 Stabilize temporary record bases
 Stabilize immediate dentures during healing
 Final impression material for functional
impressions

Question 13

resilient liners
 A group of elastomer polymers
 Used in a denture when a protective
resilient
surface is needed on the intaglio surface:

Answer 13

sensitive mucosa,
postradiation mucositis,
poorsupporting tissue, etc

Question 14

resilient liners (4)

Answer 14

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

Question 15

Are heat-processed to the denture base as a
“–” procedure

Answer 15

reline

Question 16

Elastic deformation of the liner allows the
material to

Answer 16

absorb energy/pressure of
occlusion, decreasing pressure on mucosa

Question 17

resilient liners materials (4)

Answer 17

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

Question 18

resilient lines
Length of service ranges from

Answer 18

6 months to 5
years

Question 19

resilient liners - other uses (7)

Answer 19

 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 20

resilient liners
in use, the elastic deformation of the resilient material

Answer 20

absorbs pressure that would otherwise be transmitted to sensitive tissues

Question 21

metal base dentuers
 An indication:

Answer 21

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

Question 22

metal based dentures adv (6)

Answer 22

stronger, less likely to fracture
less poris
more accurate
less deform of base during fxn
better thermal conductivity
better tissue tolerance

Question 23

metal base dentures
adv (3)
disadv (1)

Answer 23

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

 A disadvantage!!
difficult to reline

Question 24

cast metal bases (3)

Answer 24

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

Question 25

SKIPPED tissue changes (4)

Answer 25

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

Question 26

a procedure is needed every --- after initial insertion

Answer 26

4-7 years

Question 27

why reline/base? (4)

Answer 27

 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. The purpose is to produce an intaglio surface which fits the mucosa accurately

Question 28

Relining –  Rebasing – r  --- relationship not altered

Answer 28

replacing the intaglio surface of the prosthesis eplacing the entire denture base(intaglio and cameo surfaces) Occlusal

Question 29

relining

Answer 29

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

Question 30

All of the existing denture base is replaced by new resin =

Answer 30

Rebase.  The occlusal relationship of the teeth is not altered

Question 31

reline when

Answer 31

Denture is not retentive, not stable.

Question 32

relining Existing --- should be acceptable  Occlusion acceptable at centric relation position →

Answer 32

OVD error, if present, is slight and is correctable.

Question 33

reline when (4)

Answer 33

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

Question 34

when not to reline (4)

Answer 34

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

Question 35

relining errors to avoid (5)

Answer 35

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 36

static impression (5)

Answer 36

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

Question 37

in children/young adults acromegaly -

Answer 37

ridges increasing in size relines needed often