Tissue Conditioners Flashcards

1
Q

What are some examples of types of tissue conditioners?

A
  • 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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2
Q

What is pathognomonic?

A

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

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3
Q

What is the purpose of tissue conditioners?

A
  • improves retention and stability and relieves pressure
  • allows the abused tissue to recover
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4
Q

How do you place the tissue conditioner?

A
  • 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
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5
Q

What do tissue conditioners treat?

A
  • chronic denture soreness
  • traumatized oral mucosa
  • remodeling ridges
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6
Q

What do tissue conditioners allow for?

A
  • allow patient to continue wearing dentures while allowing abused tissue to heal
  • sponginess of material absorbs loads and allows tissue to heal
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7
Q

What can happen if tissue conditioners are not renewed?

A

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

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8
Q

How often should tissue conditioners be renewed?

A

once or twice per week

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9
Q

What are the uses of tissue conditioners?

A

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

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10
Q

What is a resilient liner?

A

 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.

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11
Q

When should you use resilient liner?

A

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

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12
Q

slide 18

A
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13
Q

How does tissue change do to dentures?

A

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

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14
Q

How often do you need to reline complete dentures?

A

every 4-7 years after initial insertion

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15
Q

Why do we reline/rebase?

A

 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.

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16
Q

What is the purpose of the reline procedure?

A

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

17
Q

What is relining?

A

replacing the intaglio surface of the prosthesis

18
Q

What is rebasing?

A

replacing the entire denture base (intaglio and cameo surface)

19
Q

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

A

rebase

20
Q

When should you reline?

A

denture is not retentive or not stable

21
Q

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

A

Not chaning the occlusion

22
Q

What should you check before you reline?

A
  • existing OVD is acceptable
  • appearance of teeth and base is acceptable
  • acceptable occlusion at CR
  • phonetics acceptable
23
Q

When should you not reline?

A

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

24
Q

What do you need to avoid when relining?

A
  • try not to increase or decrease the OVD
  • try not to allow maxillary denture to slide forward
  • occlusal errors
25
Q

What are the steps for a lab reline?

A
  • 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
26
Q

What is a static impression?

A

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

27
Q

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

A

they experience acromegaly and the ridges increase in size