Zinc Phosphate Cement in Dentistry

The video provides a comprehensive overview of zinc phosphate cement, covering its introduction, composition, types, and clinical applications. It explains the manipulation and mixing process, setting reaction, and ways to control it. The video also discusses the physical and biological properties, advantages, disadvantages, and biological applications of the cement.

What is the principal constituent of the powder form of zinc phosphate cement?

• Magnesium oxide

• Zinc oxide

• Aluminium phosphate

• Silica dioxide

Which type of zinc phosphate cement is used for cementation of orthodontic bands?

• Type 1

• Type 2

• Type 3

• Type 4

What is the purpose of using a cool glass slab during the manipulation of zinc phosphate cement?

• To dissipate heat and prolong working time

• To accelerate the reaction

• To increase the setting time

• To enhance the strength of the cement

What type of reaction occurs when zinc phosphate cement is mixed?

• Neutral reaction

• Exothermic reaction

• Endothermic reaction

• Redox reaction

Which property of zinc phosphate cement makes it a poor choice for looting all-ceramic restorations?

• High compressive strength

• Low tensile strength

• High solubility

• Excellent thermal insulation

What is the compressive strength of zinc phosphate cement?

• 13.7 GPa

• 104 MPa

• 0.04%

• 5-8 MPa

Why is it necessary to use cavity varnish before placing zinc phosphate cement?

• To enhance adhesion

• To prevent pulp inflammation

• To increase setting time

• To improve thermal insulation

What is a disadvantage of zinc phosphate cement?

• Chemical adhesion

• High tensile strength

• Low modulus of elasticity

• Brittle nature

Which of the following is an advantage of zinc phosphate cement?

• Low compressive strength

• Good thermal insulation

• Chemical bonding

• High solubility in water

For what purpose is zinc phosphate cement used in dentistry?

• As a permanent restoration

• For whitening teeth

• For looting orthodontic bands

• As a chemical adhesive