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Question 1

Why is an immediate denture different?

Answer 1

Does not need try in stage, needs replacing 3-6 months later

Question 2

Which method provides natural retention of an upper full denture?

Answer 2

Surface tension

Question 3

When would you use a Willis bite gauge?

Answer 3

Recording bite of full dentures

Question 4

What is a fixed appliance?

Answer 4

Does not come out of mouth and is permanently fixed
Can be used for aesthetic reasons, reduce tooth breakage etc

Question 5

What is a removable appliance?

Answer 5

Put in and out on a daily basis
Dentures (can be used as temporary or permanent measure)

Question 6

Why might an inlay/onlay be used?

Answer 6

Inlay - alternative to direct filling
Onlay - covers a cusp of tooth but less destructive than conventional crown

Question 7

Why might an adhesive bridge be used?

Answer 7

Replace a missing tooth
Stuck onto neighbouring tooth so not destructive of surrounding teeth
Minimal prep needed

Question 8

Why might a conventional bridge be carried out?

Answer 8

If neighbouring teeth already have large fillings/crowns
Can be more retentive than adhesive bridge

Question 9

Why might a veneer be done?

Answer 9

Improve appearance of teeth or build up “peg” shaped teeth

Question 10

When is a post crown done?

Answer 10

After RCT - post goes into root canal
Reinforces structure of tooth and makes it stronger

Question 11

When is a jacket crown done?

Answer 11

Done to strengthen structure of tooth
Useful if tooth is cracked to prevent it from breaking further

Question 12

Process of CAD/CAM

Answer 12

Prepare tooth
Intraoral scanner to capture tooth prep and opposing teeth - creates 3D image
Use 3D image to design restoration using CAD software
Milling machine to shape prostheses from ceramic
Restoration is sintered and polished
Restoration is placed in mouth and adjusted as necessary

Question 13

What is a partial acrylic denture used for?

Answer 13

Dentate patients to replace missing teeth
Denture relies on suction and facial muscles to be retained

Question 14

What is a partial cobalt chrome used for?

Answer 14

Replacing a few teeth, usually has clasps to hold it in place
generally covers less palate
Need good periodontal health for it to work as harder to add to

Question 15

What is a full denture for?

Answer 15

Edentulous patients
Usually made in acrylic as rely on suction and facial muscles to be held in place

Question 16

What is the working arch?

Answer 16

Part of mouth where preparation is being carried out
(Silicone imp)

Question 17

What is the opposing arch?

Answer 17

Opposite where preparation is being done
(Alginate imp)

Question 18

What is an articulator used for?

Answer 18

Imitate jaw movements so you can find and mimic patient’s bite
Can be used for diagnosis and planning

Question 19

What are high speed buses made from and what do they do?

Answer 19

Diamond or tungsten carbide cutting surfaces
Used for rapid removal of enamel, dentine and old fillings

Question 20

What are slow speed burs?

Answer 20

Short burs with notch (latch grip), used for air turbine handpieces