Denture Base Fractures at Overlay Abutment Sites

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Which of the following is the correct definition of a reline in dentistry?

Replacement of the inner 1mm of the denture base (correct)

Replacement of the entire denture base, saving only the teeth

Assessment of VDO and occlusion

Evaluation of the denture's age and contours

When would a rebase of a complete denture be necessary?

When the occlusion shows signs of wear and loss of vertical (correct)

When there are ridge and tissue changes in the mouth

When the VDO needs to be maintained or increased

When the denture is older and requires porosity corrections

What is the maximum increase in VDO that can be done during a reline or rebase?

2-3 mm

1-2 mm (correct)

4-5 mm

3-4 mm

What should be checked before performing a reline or rebase on a denture?

The contour of the denture Signup and view all the answers

What is the lifespan of a denture?

7-10 years Signup and view all the answers

What is the purpose of an occlusal adjustment during denture insertion?

To establish a stable occlusion Signup and view all the answers

When should a functional impression technique be used in dentistry?

When performing a reline or rebase Signup and view all the answers

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? Signup and view all the answers

What is the purpose of a plasticizer in denture liner materials?

To produce or promote plasticity and flexibility. Signup and view all the answers

Which of the following materials is more porous than hard reline materials?

Soft reline materials. Signup and view all the answers

What is the correct sequence of steps for repairing a brand new denture that fractures from a fall?

Repair first, then immediately rebase. Signup and view all the answers

Which material is used for milled dentures and has negligible free monomer?

Pre-polymerized PMMA. Signup and view all the answers

What is the purpose of catalysts in denture liner materials?

To activate the reaction. Signup and view all the answers

Which material cannot survive long term due to the lower degree of cross-linking compared with their heat activated counterparts?

Silicone. Signup and view all the answers

Which material decreases water sorption and solubility, thereby promoting denture liner stability?

Plasticizers. Signup and view all the answers

Which material is a possible allergen and is used for indirect resin build-up?

Urethane methacrylate. Signup and view all the answers

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 Signup and view all the answers

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) Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

What should be done to increase the vertical dimension of occlusion (VDO) during a reline or rebase?

Add grey or green compound tissue stops Signup and view all the answers

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 Signup and view all the answers

What technique should be used to fill small well circumscribed voids with sharp margins in a denture?

Disclosing wax technique Signup and view all the answers

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 Signup and view all the answers

What is the recommended pressure and time for pressure-cured repair of a midline fracture?

20 lb psi for 20 min Signup and view all the answers

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 Signup and view all the answers

What is the recommended method for repairing a non-occlusal bearing load denture border fracture?

Block out undercuts and pour a cast for support Signup and view all the answers

When is post dam augmentation indicated in denture repair?

When the denture lacks retention due to insufficient post dam Signup and view all the answers

What is the recommended pressure and time for pressure-cured repair of a denture with compound added intra-orally?