30 Questions
Which of the following is the correct definition of a reline in dentistry?
Replacement of the inner 1mm of the denture base
When would a rebase of a complete denture be necessary?
When the occlusion shows signs of wear and loss of vertical
What is the maximum increase in VDO that can be done during a reline or rebase?
1-2 mm
What should be checked before performing a reline or rebase on a denture?
The contour of the denture
What is the lifespan of a denture?
7-10 years
What is the purpose of an occlusal adjustment during denture insertion?
To establish a stable occlusion
When should a functional impression technique be used in dentistry?
When performing a reline or rebase
Which of the following is a critical question to answer when deciding whether to reline or rebase a denture?
How long does the solution need to last?
What is the purpose of a plasticizer in denture liner materials?
To produce or promote plasticity and flexibility.
Which of the following materials is more porous than hard reline materials?
Soft reline materials.
What is the correct sequence of steps for repairing a brand new denture that fractures from a fall?
Repair first, then immediately rebase.
Which material is used for milled dentures and has negligible free monomer?
Pre-polymerized PMMA.
What is the purpose of catalysts in denture liner materials?
To activate the reaction.
Which material cannot survive long term due to the lower degree of cross-linking compared with their heat activated counterparts?
Silicone.
Which material decreases water sorption and solubility, thereby promoting denture liner stability?
Plasticizers.
Which material is a possible allergen and is used for indirect resin build-up?
Urethane methacrylate.
Which of the following is NOT a step in the preparation for a reline or rebase impression?
Peel out as much soft liner as possible
What is the purpose of reducing all interior acrylic by ~1.5 mm (except for 3 tissue stops) in a reline or rebase of a complete denture?
To maintain vertical dimension of occlusion (VDO)
Where should the tissue stops be located in a denture during a reline or rebase?
One in the anterior region and two in the posterior region
How much should the tissue stop be cut away and offset from the incisive papilla and tuberosities during a reline or rebase to maintain the vertical dimension of occlusion (VDO)?
~1.5 mm
What should be done to increase the vertical dimension of occlusion (VDO) during a reline or rebase?
Add grey or green compound tissue stops
What is the recommended material to make the final impression during a reline or rebase of a complete denture?
Light bodied rubber base impression material
What technique should be used to fill small well circumscribed voids with sharp margins in a denture?
Disclosing wax technique
Which of the following is a common repair method for a denture base fracture at the overlay abutment site?
Repositioning of parts bench side with sticky wax
What is the recommended pressure and time for pressure-cured repair of a midline fracture?
20 lb psi for 20 min
What is the purpose of a rebase in the repair of a denture base fracture at the overdenture repair site?
To take a final impression
What is the recommended method for repairing a non-occlusal bearing load denture border fracture?
Block out undercuts and pour a cast for support
When is post dam augmentation indicated in denture repair?
When the denture lacks retention due to insufficient post dam
What is the recommended pressure and time for pressure-cured repair of a denture with compound added intra-orally?
20 lb psi for 20 min
What is the purpose of a "Pick-Up" impression in denture repair?
To create a cast with a precise fit
Test your knowledge on denture base fractures at overlay abutment sites. Learn about the importance of checking occlusion and abutment height before repairing. Explore techniques such as repositioning, splinting, and temporary cast options. Challenge yourself with questions on pressure-cured repairs and more.
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