??? IDK 8 - 4/3: Relining Complete Dentures

Question 1

What are reasons for the tissue to change?

Answer 1

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

Question 2

What is a procedure needed every 4-7 years after initial insertion?

Answer 2

Reline/rebase

Question 3

Why reline/rebase?

Answer 3

• 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 4

What is the purpose of relining/rebasing?

Answer 4

Produce an intaglio surface which fits the mucosa accurately

Question 5

What are tissue changes that can lead to relining?

Answer 5

Tissue departs from the original form of the denture base

Question 6

What is the purpose of a reline procedure?

Answer 6

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

Question 7

What is relining?

Answer 7

Replacing the intaglio surface of the prosthesis

Question 8

What is rebasing?

Answer 8

Replacing the entire denture
base(intaglio and cameo surfaces)

Question 9

What is not altered during relining/rebasing?

Answer 9

Occlusal relationship

Question 10

What is the process of relining?

Answer 10

adding new resin to the intaglio surface of a denture

Question 11

What is all of the existing denture base replaced by?

Answer 11

New resin = rebase

Question 12

What is not altered during rebase?

Answer 12

Occlusal relationship of the teeth

Question 13

When should you reline the denture?

Answer 13

When it is not retentive, not stable

Question 14

What should be acceptable during relining?

Answer 14

Existing OVD

Question 15

What causes an error in relining?

Answer 15

Occlusion acceptable at centric relation position →Error, if present, is slight and is correctable

Question 16

When should you reline?

Answer 16

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

Question 17

When should you not reline?

Answer 17

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

Question 18

What are errors to avoid when relining?

Answer 18

• Increasing the OVD
• Allowing maxillary denture to move forward during impression step
• Occlusal relationship errors

Question 19

What can increase the OVD?

Answer 19

Denture with impression material is not fully seated in place

Question 20

What alters the occlusal relationships?

Answer 20

Allowing the denture to move forward during reline impression step

Question 21

hen does relining-develop tissue stop?

Answer 21

At VDO
- remove flange undercuts
- remove 1-2mm of resin base
- functional impression with lynal 1-2 hours

Question 22

What are the steps of taking a static impression?

Answer 22

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

Question 23

What should you do with adhesive when relining?

Answer 23

Use adhesive and create relief holes

Question 24

When should you place the posterior palatal seal?

Answer 24

Before processing

Question 25

Who are patients that often need relines?

Answer 25

Children, young adults, acromegaly - ridges increasing in size