Reline and Rebase

Question 1

Resurfacing teh tissue of a denture base with new material to make it fit underlying tissue more accurately.

Answer 1

Reline

Question 2

Replacement of the entire denture base with new material.

The denture teeth may also be replaced.

Answer 2

Rebase

Done when they don’t like the color of the gingiva, for example.

Question 3

Where are rebases done?

Answer 3

ONLY in the lab.

Question 4

Clinical changes seen in someone who wears a denture and has ridge resorption.

Answer 4

1 ) .Decreased VDO.

2) Overextended denture borders as a result of losing ridge support.
3) Horizontal shift of dentures.
4) Irritated/abused tissue.
5) Change in occlusion (due to settling of the prosthesis).
6) For an RPD: decreased support from the distal extension base.

Question 5

Indications for a Reline

Answer 5

• Poor retention, support, or stability.
• Excessive over or underextended flanges.
• Fracture of denture base.
• Abused tissue.

Question 6

The decision to reline assumes that:

Answer 6

1) Appearance of teeth is acceptable.
2) Teeth are in an appropriate position.
3) Minimal wear of teeth.
4) VDO is correct or can be corrected with occlusal adjustments.
5) Centric occlusal contacts are acceptable or can be corrected.

Question 7

Teeth that are very worn down are a contraindication for what?

Answer 7

A reline

Question 8

Used to take the impression for a lab reline.

Answer 8

Existing denture used as a custom tray.

Question 9

What is the closed mouth technique?

Answer 9

You insert the tray to take the impression, and have the pt bite down in CR.

• Must maintain OVD and occlusal contacts in CR position during the impression.
• If you need to do occlusal equilibration, do it BEFORE you take the impression.

Question 10

What do you pour up the lab reline impression with?

Answer 10

MICROSTONE bc if you use jade stone, it will be hard to retrieve the denture after it’s been processed.

Question 11

T/F: Do NOT separate the impression from the microstone for a lab reline. Just submit the poured impression to the lab.

Answer 11

True

Question 12

Impression technique when there’s a distal extension RPD with displaceable tissue.

Answer 12

Open-mouth impression

Question 13

Do you reline the most or least stable denture first if doing two arches?

Answer 13

LEAST stable

Question 14

How much of the denture intaglio surface do you remove when doing a reline?

Answer 14

1- 1.5 mm

Question 15

Things to do prior to a reline:

Answer 15

1) Reduce OVER-EXTENDED borders.
2) Correct occlusal disharmonies.
3) Correct pressure areas in the denture.

Question 16

How often should a temporary reline (coe-soft) be replaced?

Answer 16

Every 2-4 weeks,

Question 17

How much of the flange area do you remove for a reline?

Answer 17

2-3 mm

Question 18

Do you do border molding with a lab reline?

Answer 18

Yes

Question 19

After you take the imrpression for the reline, what are you supposed to mark on the impression?

Answer 19

Postpalatal seal.

Mark it in the patient, re-seat the impression, and it will transfer to the impression.

Pour it up, and it will transfer to the stone.

Question 20

This component of a partial can be used to evaluate the need for a reline.

Answer 20

The indirect retainer and how it’s adapting to the teeth.

Question 21

When relining an RPD with a distal extension, where do you place your fingers?

Answer 21

On the indirect retainer.

NOT on the distal extension bc you will be displacing the tissue too much.

Question 22

This type of prosthesis can be reconstructed instead of rebased.

Answer 22

RPD.

Remove the base and the teeth, and try-in the metal framework.

Question 23

If the indirect retainer looks like this, you need to do a reline of a partial.

Answer 23

It doesn’t seat all the way when you put finger pressure on the distal extension.

Question 24

Used to do a chairside lab reline.

Answer 24

Triad DuaLine

Question 25

This reline technique is useful to increase the postpalatal seal.

Answer 25

Chairside reline.

Don’t use a chairside reline if you need to reline the entire base.

It’s irreversible once it’s done.

Question 26

Rebasing procedure in the lab or chairside?

Answer 26

ONLY in the LAB!

Question 27

This impression technique is only used for RPD’s.

Answer 27

OPEN mouth