Lec 15: Relining & Rebasing of RPD Flashcards
Resurfacing of the tissue of a denture base with new material to fit the underlying tissue more accurate.
Relining
Most basic of the partial denture maintenance technique.
Relining
Adding new denture base material to existing resin to make up for loss of tissue contact caused by resorption of alveolar ridge.
Relining
Replacement of the entire denture base with new material.
Rebasing
A new impression is necessary for this procedure.
Rebasing
Relining or rebasing?
Minimal to moderate changes
Relining
Relining or rebasing?
Moderate to maximal changes
Rebasing
Relining or rebasing?
Immediate dentures after 3-6 months
Relining
Relining or rebasing?
Changes in basal seat looseness of prosthesis
Relining
Relining or rebasing?
Soreness and abused soft tissues
Relining
Relining or rebasing?
Slight loss of peripheral seal
Relining
Relining or rebasing?
Poor adaptation of denture to base
Relining
Relining or rebasing?
Residual ridge resorption - changes in vertical orientation of denture
Rebasing
Relining or rebasing?
Changes in basal seat- resulting in changes in horizontal orientation.
Rebasing
Relining or rebasing?
When only one jaw has resorbed extensively and occlusion is acceptable
Rebasing
Relining or rebasing?
Internal strains in denture base
Rebasing
Relining or rebasing?
Alterations in polished surface dentures
Rebasing
Used to refit the surfaces of complete denture.
Denture relining materials
First synthetic resin used as a liner.
Polyvinyl resin
2 indications of the need for relining distal extension RPD base?
- loss of occlusal contact
- loss of tissue support
3 procedures for tissue preparation?
- tissue rest
- use of tissue conditioner
- surgical management
Disadvantages of chair-side relining (5)?
- Chemical burns on mucosa
- Porosity
- Bad odor
- Poor color stability
- Material could not be removed easily for repeat.
