Complete dentures

True or false: rebasing a denture can lead to an increase in OVD

During a chairside soft reline procedure, the setting reaction of the material is:

The aromatic ester in the liquid part of a soft chairside reline material is a...

Long term soft liners are made of one of two materials: Silicone and Acrylic. Silicone materials can be either [blank_start]cold[blank_end] curing or [blank_start]heat[blank_end] curing. Acrylic long term soft liners are [blank_start]heat[blank_end] cured - cold cured acrylics are only suitable for very [blank_start]short[blank_end] term linings and tissue [blank_start]conditioning[blank_end]. Cold curing silicone materials contain filler. As the level of filler rises, so does the level of [blank_start]water sorption[blank_end] and worsening of dimensional stability. The material is liable to [blank_start]tear[blank_end] and detach from the denture base. The [blank_start]abrasion[blank_end] resistance are poor. Heat curing silicone materials have lower levels of water sorption. [blank_start]Dimensional[blank_end] stability is therefore higher and the [blank_start]adhesion[blank_end] to the denture base is better. Long term soft acrylic linings contain either poly[blank_start]ethyl[blank_end]methacrylate or poly[blank_start]butyl[blank_end]methacrylate polymers and are heavily p[blank_start]lasticised[blank_end] to create softness.

Which image shows the penetration recovery curve for silicone soft liners?

A material that reacts almost instantly to a force, and removal of the force, is said to be:

A material that has a delayed response to the application and removal of a force is said to be:

Which material is better at absorbing shock?

True or false: acrylic soft lining materials harden and become less elastic with time

True or false: silicone soft lining materials become harder with time due to leakage of plasticiser

True or false: it is better to process soft lining materials and the denture base at the same time to ensure better bond strength

True or false: there is a marked benefit in increasing the thickness of silicone soft liners to improve impact resistance

The "ideal interdigitation of teeth in which there is no cuspal interference in any position of jaw closure" is known as...

Balanced articulation is a "...." relationship?

The curve of Spee is in the "..." direction?

The "vertical distance between two arbitrary fixed points, one on the maxilla and one on the mandible, where the teeth are in occlusion" is know as the...

The problem with this man's dentures is likely a...

You are carrying out an intra-oral examination of a patient's denture. The patient's denture drops down when they open their mouth. What is the LEAST likely cause of this problem?

You attempt to move a patient's lower denture back in their mouth to check stability. The denture freely moves backwards. What is the likely cause of this problem?

Complete dentures are usually set up on what type of articulator?

A face bow record facilitates mounting on what type of articulator?

Antidepressants and tranquillisers can cause which of the following problems with dentures?

How much of the crest height should be expected to be lost each year in an edentulous patient?

How much crest height is usually lost from the alveolar ridge in the first year after extraction?

True or false? surgical removal of a flabby ridge will enable a less bulky denture to be made

True or false? a flabby ridge should be recorded with a mucostatic technique

True or false: a flabby ridge recorded with a mucodisplacive technique will maximise support from the ridge

True or false: a flabby ridge recorded with a mucostatic technique will result in poorer retention

On the upper denture, which cusps are supporting cusps?