Tissue Conditioners

Question 1

What are some examples of types of tissue conditioners?

Answer 1

• powdered polymer (polyethyl methacrylate or isobutly methacrylate)
• liquid (an ester such as butyl phthalate or butyl gylcolate in an alcohol solvent)

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Question 2

What is pathognomonic?

Answer 2

(of a sign or symptom) specifically characteristic or indicative of a particular disease or condition

Question 3

What is the purpose of tissue conditioners?

Answer 3

• improves retention and stability and relieves pressure
• allows the abused tissue to recover

Question 4

How do you place the tissue conditioner?

Answer 4

• polymer and monomer are mixed to make a gel and then placed in denture
• insert for 5 minutes
• self-curing and slowly polymerizing
• trim the excess

Question 5

What do tissue conditioners treat?

Answer 5

• chronic denture soreness
• traumatized oral mucosa
• remodeling ridges

Question 6

What do tissue conditioners allow for?

Answer 6

• allow patient to continue wearing dentures while allowing abused tissue to heal
• sponginess of material absorbs loads and allows tissue to heal

Question 7

What can happen if tissue conditioners are not renewed?

Answer 7

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

Question 8

How often should tissue conditioners be renewed?

Answer 8

once or twice per week

Question 9

What are the uses of tissue conditioners?

Answer 9

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

Question 10

What is a resilient liner?

Answer 10

 A group of elastomer polymers
 Used in a denture when a protective resilient surface is needed on the intaglio surface: sensitive mucosa, postradiation mucositis, poor supporting tissue, etc.

Question 11

When should you use resilient liner?

Answer 11

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

Question 12

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Question 13

How does tissue change do to dentures?

Answer 13

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

Question 14

How often do you need to reline complete dentures?

Answer 14

every 4-7 years after initial insertion

Question 15

Why do we reline/rebase?

Answer 15

 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 16

What is the purpose of the reline procedure?

Answer 16

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

Question 17

What is relining?

Answer 17

replacing the intaglio surface of the prosthesis

Question 18

What is rebasing?

Answer 18

replacing the entire denture base (intaglio and cameo surface)

Question 19

All of the existing denture base is replaced by new resin… rebase or reline?

Answer 19

rebase

Question 20

When should you reline?

Answer 20

denture is not retentive or not stable

Question 21

What is one thing you have to be sure of when relining and rebasing?

Answer 21

Not chaning the occlusion

Question 22

What should you check before you reline?

Answer 22

• existing OVD is acceptable
• appearance of teeth and base is acceptable
• acceptable occlusion at CR
• phonetics acceptable

Question 23

When should you not reline?

Answer 23

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

Question 24

What do you need to avoid when relining?

Answer 24

• try not to increase or decrease the OVD
• try not to allow maxillary denture to slide forward
• occlusal errors

Question 25

What are the steps for a lab reline?

Answer 25

- develop tissue stops at VDO - remove flange undercuts - remove 1-2 mm of resin base - functional impression with lynal (1-2 hours) - use adhesive and create relief holes - flask the impression - place the posterior palatal seal before processing

Question 26

What is a static impression?

Answer 26

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

Question 27

Children and young adults will need relines more often. Why is this the case?

Answer 27

they experience acromegaly and the ridges increase in size