Insolubility, good adhesion to tooth, high strength, biological compatibility, thermal insulation, thermal conductivity similar to tooth, high modulus of elasticity, and high mechanical support.
Name the ideal qualities of cement
Cementation, temporary fillings, high strength bases, low strength bases, cavity liners, varnish of dentin sealer, and special applications.
Name the seven types of dental cements
Final cementation of permanent restoration
What is the primary use for zinc phosphate cement?
Zinc oxide powder, and liquid phosphoric acid.
What is the composition of Zinc phosphate cement?
Exothermic reaction- alkaline powder dissolved by acidic liquid, and heat is given off.
What kind of thermic reaction does the zinc phosphate cement give off.
Time and temperature.
What two things really effect the setting of a cement?
A cool mixing slab.
What kind of slab should be used for the zinc phosphate cement?
Mixing time + working time + intraoral setting time
5-9 minutes form the start of mixing.
What is setting time?
Compressive- moderate to high
Tensile- Low
For zinc phosphate cements, what is the compressive and tensile strengths?
Sensitive teeth, short tooth preps
What are the contraindications for zinc phosphate cements?
High
Is the modulus of elasticity high or low for zinc phosphate cements?
Varnish or liner, and be sure prep is moist.
What do you use to help protect the pulp when using zinc phosphate cements?
Mechanical interlocking retention, low 4.2 PH, Low film thickness.
With zinc phosphate cements, What kind of retention does it have? What is it's PH? and how much film thickness does it have?