Free Dental Cements MCQs with Answers

• A. Polycarboxylate cement
• B. Resin cement
• C. Silicate cement
• D. Glass ionomer cement

Explanation: Glass ionomer cement chemically bonds to enamel and dentine, releases fluoride, and is sufficiently translucent for many clinical uses.

• A. It is highly cariogenic
• B. It is pulpal irritant
• C. Chemically attaches to the tooth structure
• D. It produces thinnest film surface

Explanation: Silicate cement is strongly acidic during setting and can irritate the pulp, especially in deep cavities without adequate protection.

• A. ZOE
• B. Calcium Hydroxide
• C. Zinc silicophosphate
• D. Zinc phosphate

Explanation: Zinc silicophosphate cement contains fluoride-releasing silicate components, giving it an anticariogenic effect.

• A. It has less occlusal wear
• B. As temporary cementation
• C. As a temporary filling material
• D. In final cementation

Explanation: Zinc phosphate cement is principally used for the definitive cementation of crowns, bridges, inlays, and orthodontic bands.

• A. Silicate
• B. ASPA
• C. Polycarboxylate
• D. Zinc phosphate

Explanation: Silicate cement is highly sensitive to moisture balance and can deteriorate when exposed to dehydration, making it unsuitable for patients…

• A. 60%
• B. 70%
• C. 80%
• D. 90%

Explanation: Zinc oxide forms about 70% of the ZOE cement powder, with the remainder mainly consisting of resin, zinc acetate and other additives.

• A. Zinc phosphate and GIC
• B. Silicate and GIC
• C. Zinc phosphate and SIlicate
• D. ZOE and Silicate

Explanation: Silicophosphate cement combines the powder systems of zinc phosphate cement and silicate cement.

• A. Zinc phosphate
• B. Zinc oxide-eugenol cement
• C. Carboxylate cement
• D. Ethoxybenzoic acid

Explanation: Zinc phosphate cement is initially acidic because of its phosphoric acid liquid, so it may irritate the pulp, especially in deep cavities…

• A. Glass ionomer
• B. Resin cement
• C. Polycarboxylate cement
• D. Silico-Phosphate cement

Explanation: Resin cements have the lowest solubility in oral fluids after polymerisation, giving them better resistance to dissolution at the margins.

• A. Mouth breathers
• B. In the restoration of posterior tooth
• C. Patients with high caries index
• D. None of the above

Explanation: Silicate cement releases fluoride, so its traditional indication was anterior restorations in patients with a high caries index.

• A. Glass ionomer
• B. Resin cement
• C. Silicate
• D. Polycarboxylate

Explanation: Polycarboxylate cement is considered especially kind to the pulp because its polyacrylic acid molecules are large and penetrate dentinal…

• A. 1 Minutes
• B. 2 Minutes
• C. 3 Minutes
• D. 4 Minutes

Explanation: Zinc polycarboxylate cement has a short working time of roughly 2.5 to 3 minutes, so 3 minutes is the best option provided.

• A. GIC and ZnPO4
• B. GIC and polycarboxylate
• C. ZnPO4 and silicate
• D. GIC and silicate

Explanation: Glass ionomer and zinc polycarboxylate cements chemically adhere to tooth structure through interaction between their carboxyl groups and…

• A. That silicates show very little leakage at the margins of the restoration
• B. That beryllium flux is used in silicates
• C. The reduction in enamel solubility due to fluoride uptake by enamel
• D. Due to the high silica content

Explanation: Silicate cement releases fluoride, which is taken up by adjacent enamel and lowers its solubility in acid, explaining its anticariogenic…

• A. Acetic acid
• B. Alginic acid
• C. Phosphoric acid
• D. Ortho-ethoxy acid

Explanation: Eugenol can be replaced by ortho-ethoxybenzoic acid, commonly called EBA, in zinc oxide cement.

• A. Zinc oxide eugenol
• B. Zinc polycarboxylate
• C. SIlicate
• D. Both B & D
• E. Glass ionomer

Explanation: Both zinc polycarboxylate and glass-ionomer cement adhere to tooth structure through interaction with calcium in enamel and dentin.

• A. Polysiloxane
• B. Polyacrylic acid
• C. Phosphoric acid
• D. Ion leachable glass

Explanation: Both cements use polyacrylic acid or a related polycarboxylic acid in their liquid component.

• A. Composites
• B. Direct filling resins
• C. Polycarboxylate cements
• D. BIS-GMA resins in pit and fissure sealants

Explanation: Polycarboxylate cement chemically bonds to calcified tooth tissues by carboxyl groups chelating calcium.

• A. Decreased strength
• B. Decreased film thickness
• C. Increased setting time
• D. Decreased solubility

Explanation: A higher powder-to-liquid ratio in zinc phosphate cement generally produces a denser, stronger cement with lower solubility.

• A. 65 - 75
• B. 55 - 65
• C. 75 - 85
• D. 85 - 95

Explanation: Silicate cement is mixed on a cool slab, usually around 65 to 75°F, to dissipate heat and permit incorporation of more powder before…