1. Used to improve retention between tooth and restoration

a) Varnish
b) Bonding agents
c) Polycarboxylate Cement
d) Calcium hydroxide

2. Similar to composites in composition

a) Zinc Oxide Eugenol
b) Glass ionomer
c) Varnish
d) Resin Cement

3. Has a sedative effect on the tooth

a) Zinc Phosphate
b) Resin Cement
c) Zinc Oxide Eugenol
d) Polycarboxylate Cement

4. The advantage of Glass ionomer cement Reinforced with metal particles is

a) Decreased strength but bio compatibility
b) Increased resistance to abrasion
c) Better colour
d) Ease of manipulation

5. Which is the cement with Adhesive properties

a) Zinc oxide eugenol
b) Zinc polycarboxylate
c) Silicate
d) Zinc phosphate

6. Thermal conductivity of which material it’s close to dentin

a) Amalgam
b) silicate
c) composite resin
d) cavity varnish

7. Pulpal medication & thermal protection is given by

a) Solution liners
b) Suspension liners
c) Traditional liner
d) Cement bases

8. Bond found in glass ionomer cement is

a) Covalent bond
b) Ionic bond
c) Hydrogen bond
d) Metallic bond

9. Eugenol can be replaced in the zinc oxide eugenol cement by

a) Acetic acid
b) Alginic acid
c) Phosphoric acid
d) Ortho-ethoxy acid

10. Which of the following cements is most irritant to pupal tissues?

a) Zinc phosphate
b) Silicate
c) Glass ionomer
d) Polycarboxylate

Answers

1.B
Bonding agents are resin materials used to make a dental composite filling material adhere to both dentin and enamel

2. D
Resin cements are the luting agents of choice for bonding metal, ceramic and indirect composite restorations. They have higher compressive, tensile, and flexural strength and wear resistance compared to the conventional luting cements

3. C
The zinc oxide–eugenol cements are used to provide a sedative effect in deep preparations, but their low compressive strength presents clinical limitations.

4. B

5. B
Zinc polycarboxylate cement may adhere to teeth because it chelates the calcium ions. However, zinc polycarboxylate does not adhere to a gold casting or to a titanium abutment.

6. B

7. C
Liners are relatively thin layers of material that is used primarily to promote a barrier to protect the dentin from residual reactants diffusing out of a restoration.

Liners
Thin film liners (1-50 um)
Varnish / solution liners (2-5 um)
Suspension liners (20-25um)
Thick liners
Cement liner (0.2-1 mm)
Used for pulpal medications and treatment protection
Bases (!-2mm)
Provide thermal protection & mechanical support for the restoration by distributing local stresses from the restoration across the underlying dentin surfaces.

8. B

9. D
Mechanical properties of ZOE cement can be improved by adding by adding alumina to the powder and orthoethoxy benzoic acid to the liquid or by reinforcing with polymers.
Reinforced ZOE cements are used for intermediate restorations.

10. B
Silicate cement is a severe irritant to pulp tissues. Its PH is less than 3 at the time of insertion and it remains below 7 even after 1 month. High solubility in oral cavity is another disadvantages of silicate cement.