Tissue management and impression making Flashcards
When do you typically administer antisialagogic medications?
-30-45 minutes pre operatively
What are four antisialagogic medications?
- Pro-banthine
- Robinul
- Sal-Tropine
- Antipas, Bentyl
What is an astringent solution?
Hemostatic agent
How long do retractions cords need to be in place for?
-2-3 minutes
What types of impression materials are the most commonly used today?
- Hydrocolloids
- Elastomeric polymers
Less viscous, more runny is heavy body or light body?
-Light body
More viscous, and less runny is heavy body or light body?
-Heavy body
What are the two types of hydrocolloid impression material?
- Reversible
- Irreversible (alginate)
What are the four elastomeric impression materials?
- Addition silicone
- polyether
- Polysulfide rubber base
- Condensation silicone
What is a colloid?
-Two substances, one dispersed within another and can exist in two distinct phases
When does the colloid phase change occur with reversible hydrocolloid?
-Temperature
With alginate what reacts with what for it to work?
-Sodium and Potassium of alginic acid react with calcium to form calcium alginate
What controls the set time in alginate?
-Amount of sodium phosphate
When do you find the sol form of alginate or irreversible colloid?
-When powder is added to water
What is the function of the calcium sulfate dihydrate in alginate?
-To react with potassium alginate to form an insoluble calcium alginate gel
