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Question 1

List different materials we can use for a crown

Answer 1

1. Porcelain fused metal crown
2. Zirconia crown
3. Lithium dislocate crown
4. Non previous metal crown

Question 2

What are the advantages and disadvantages of a porcelain fused metal crown

Answer 2

Advantages:
- Good aesthetics
- Stronger than full ceramic

Disadvantages:
- Heavy tooth prep
- Wear to opposing tooth

Question 3

What are the advantages and disadvantages of a zirconia crown

Answer 3

Advantages: Aesthetics

Disadvantages:
- Heavy tooth prep
- wear to opposing tooth

Question 4

What are the advantages and disadvantages of a lithium dislocate crown

Answer 4

Advantages:
Best aesthetics

Disadvantages:
- Heavy tooth pre
- Wear to opposing teeth

Question 5

What are the advantages and disadvantages of a lithium dislocate crown

Answer 5

advantages

Question 6

What is the rile of saliva in oral health

Answer 6

1. Airway maintenance
2. Speech and lubrication
3. Eating swallowing and mastication
4. Control of bacteria and fungi
5. Digestion
6. proaction and repair of oral mucosa and dentition

Question 7

List some of the beneficial properties of calcium hydroxide

Answer 7

1. Antibacterial due to high alkaline pH
2. Dissolved dentine substrate releasing tissue growth factors
3. Stimulated odontoblasts to lay down new reparative dentine in tubules
4. Stimulates stem cells int he pulp to create new odontoblast like cells to create dentine bridges across pulpal exposures

Question 8

What can cause restorations to fail

Answer 8

1. Non carious tooth surface loss
2. Recurrent caries
3. Failure due to technical reasons like poor band or material failure
4. Occlusal forces causing fractures
5. Trauma

Question 9

What problems can NCTSL cause

Answer 9

1. Poor aesthetics
2. Impaired function
3. loss of occlusal stability