Tissue Conditioning Flashcards
_____ are essentially a band aid for dentures:
- attain an accurate fit
- treat abused tissue back to health
- impression material
Tissue Conditioner
What are the 3 main function of tissue conditioners?
- attain an accurate fit
- treat abused tissue back to health
- impression material
_____ are made of the following:
- Powdered polymer - polyethyl methacrylate or isobutyl methacrylate
- Liquid- an ester (butyl phthalate or butyl glycolate) in an alcohol solvent
Tissue conditioner
Lining the intaglio surface with a _______ improves retention and stability and relieves pressure. this allows the abused tissue to recover.
Tissue conditioner
Polymer and monomer are mixed to make a gel, then placed in denture. then insert for 5 minutes
Tissue conditioner
____ are self-curing and slowly polymerizing; versatile and easy to use
Tissue conditioner
Which tissue conditioner is used for a short time?
COE comfort
Which tissue conditioner can be used for 3-4 weeks?
COE soft
_____ is used to treat the following:
- Chronic denture soreness
- Traumatized oral mucosa
- Remodeling ridges
Tissue conditioners
_____ allow the patient to continue wearing dentures while allowing abused tissues to heal
- The sponginess of the material absorbs loads to the underlying residual ridge and allows the tissues to heal during function
Tissue conditioners
Loss of resiliency of the tissue conditioner occurs at the _____ leaches out causing the resin to become stiff
Plasticizer
If tissue conditioners are not renewed, the resin becomes _____ and produces the same tissue abuse that it was placed to treat
Stiff
______ uses:
- Prevent or treat chronic denture soreness
- Stabilize temporary record bases
- Stabilize immediate dentures during healing
- Final impression material for functional impression
Tissue conditioners
The following cause _______:
- Stresses of daily function
- Changes in general health status
- Hereditary factors
- Defects in dentures leading to produce changes in tissue form
Tissue changes
How often should a denture be relined or rebased?
Every 4-7 years
The following are reasons for ______:
- Fit of denture base of the foundation is poor
- Denture is not stable and/or is not retentive
- Denture base is fractured, discolored, or underextended
Reline/rebase
The purpose of a _____ procedure is to produce an intaglio surface which fits the mucosa accurately without affecting the occlusion or OVD
Reline procedure
______: replacing the intaglio surface of the prosthesis
Relining
______: replacing the entire denture base (intaglio and cameo surfaces)
Rebasing
You need to _____ is the denture is not retentive, not stable
reline
_____ can be done when:
- Existing OVD should be acceptable
- Occlusion acceptable at centric relation position; if there is an error in occlusion, it is slight and correctable
- Phonetics are acceptable
Relining
_____ should not be done when:
- Teeth grossly malpositioned / worn
- Occlusal plane errors
- Poor esthetics / phonetics
- OVD in error
Relining
T/F: You should avoid increasing the OVD when relining
True
An error to avoid in relining procedure is for denture with impression material is not _____ inplace increasing the OVD
Fully seated
An error to avoid in relining procedure is allowing the denture to move ____ during reline impression leading to an error in the occlusal relationships
Forward
Should flange undercuts be taken off in relining procedue?
yes
____ imnpression is used for Reline:
- Closed mouth technique
- Patient occludes at OVD
- Functional movements made with tongue
- Removed moments later, not hours later
- Polysulfide, PVS, polyether etc
Static Impression
Should the posterior palatal seal be placed before or after processing?
Before
_____ are needed often in children, young adults, acromegaly - ridges increasing in size
Relines
How much of the resin base should be taken off of the resin base for a relining procedure?
1-2 mm
How long should a functional impression with lynal be left in to accurately get the impression?
1-2 hours
