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6. What common anaesthetics does not contain a vasoconstrictor?
- Citanest Plain
- Citanest
- Articaine
- Lidocaine
7. What is an advantage of etchant?
- Cheap
- All of them
- Improves retention
- Doesn't infiltrate dentine quickly
8. What is a hazard associated with amalgam?
- Mercury is toxic
- None of them
- Mercury collects irreversibly in human tissues
- Amalgam releases high amounts of vapours in the mouth
9. What is the purpose of a temporary crown?
- None of the them
- To protect a prepared tooth
- To replace a missing tooth
- To restore an existing crown
10. What is the main hazard associated with dental curing lights?
- All of them
- Possible skin burns
- Retina damage
- Possible tissue damage
11. What is an advantage of dental bond?
- Doesn't evaporate
- Insoluble
- Thickens when exposed to air
- Unaffected by saliva
12. What is the purpose of a veneer?
- To restore an existing crown
- To cover the labial surface of an anterior tooth
- To protect a prepared tooth
- To replace missing teeth
13. What is the purpose of a full removal prosthesis?
- To replace posterior teeth in an arch
- To replace anterior teeth in an arch
- To replace full arch of teeth
- To replace partial arch of teeth
14. How should alginate impressions be stored once the impression has been disinfected?
- Dried and sealed in an air tight bag
- Any of them.
- Wrapped in damp gauze and sealed in an air tight bag
- Wrapped in gauze and sealed in an air tight bag
15. When making complete and partial removable prosthesis, which stage comes third?
- Bite registration
- Try-in
- Secondary impressions
- First impressions
16. When making complete and partial removable prosthesis, which stage is first?
- Fit
- Bite registration
- First impressions
- Try-in
17. When making complete and partial removable prosthesis, which stage comes second?
- Secondary impressions
- Try-in
- Bite registration
- First impressions
18. What is a disadvantage of etchant?
- Unstable composition
- Does not dry
- Excessive demineralisation can occur
- Unhygienic application
19. What is an advantage of a lining material?
- All linings can be used with all fillings
- Always pre-mixed
- Protects the pulp
- Allows access of caries bacteria
20. What is the purpose of a bridge?
- To replace missing teeth
- To cover the labial surface of teeth
- To protect a prepared tooth
- To restore an existing crown