Denture Relines Flashcards
What is a denture reline?
resurfacing the denture base with new material to make it fit the underlying tissue more accurately
What are the types of relines?
- heat cured
- cold cure
- soft reline - silicone or acrylic
- temporary reline - tissue conditioners
What are the indications of a denture reline?
- generally satisfactory dentures
- acceptable vertical dimensions
- acceptable aesthetics
- temporary modification
- correction to a spare set
- modification of immediate dentures
What are contraindications to a denture reline?
- incorrect vertical dimensions
- poor aesthetics
- moderate to severe under extension
- multiple issues
- poor fitting new denture
What are the requirements for impression materials for denture relines?
- dimensionally stable
- elastic to record undercuts
- quick setting
- strong in thin sections
What impression materials can be used for denture relines
- zinc oxide - useful for lowers, may be an issue for upper undercuts
- zinc oxide alternatives like cavex
- elastomers: silicones and polyethers
Why should you avoid light body impression materials for denture relines?
they are prone to tearing
Outline the method for relining dentures (chair side)
- remove gross undercuts
- remove over extensions
- roughen periphery?
- correct undercut extensions
- adhesive - not required for zinc oxide
- dont overload with impression material
What techniques can be used to take impression for denture relines?
Open mouth technique
closed mouth technique
When can you use the closed mouth technique?
tolerant patient- no gagging
the quality of material is critical here
a cooperative patient needed to maintain dimensions
What type of relines can be done in surgery?
Cold cure relines
What are the advantages of in surgery relines?
- one appointment
- patient does not have to part with denture
What are the disadvantages of in surgery relines?
taste
finishing
shade
porosity
The cold cure method is an ________ reaction. What is a requirement for in surgery relines as a result of this?
exothermic
patient must not leave with denture until the reline is fully cured
In surgery relines of removable partial dentures are often not advised because…
they are high risk if the acrylic sets between the teeth
