Dental cements

Question 1

Uses of dental cements

Answer 1

• Base
• Filling material
• Liner
• Adhesive

Question 2

5 types of dental cements

Answer 2

1. Zinc oxide eugenol cement
2. Zinc phosphate cement
3. Zinc polycarboxylate cement
4. Glass ionomer cement
5. Resin cement

Question 3

Properties of Zinc oxide eugenol

Answer 3

1. Not very strong. More suitable as temporary cementation.
2. can be irritant if directly contacted the pulp or oral mucosa
3. Sedative to the pulp because it has antibacterial effect
4. Can not be used under composite or any resin material (because eugenol will interfere with the polymerization process of resin)

Question 4

Zinc phosphate cement

Answer 4

Irritates the pulp, so it is not recommended in teeth with vital pulp

Adequate strength and rigidity

Acidic PH=4.2

Question 5

Advantages and Disadvantages

Answer 5

DISADVANTAGES: Low film thickness Not expensive Strong

ADVANTAGES:
Low film thickness
Not expensive
Strong
DISADVANTAGES:
Initially Irritates the pulp.
High solubility.

Question 6

Zinc polycarboxylate

Answer 6

ADVNTAGES
1. Good adhesion to the tooth structure (chemical and mechanical bond)
2. Nonirritating to the pulp.
3. Easy to use

DISADVANTAGES:
1. High solubility.
2. Lower strength.
3. Short working time.