Flashcards in Provisional Acrylic Materials Deck (19):
What is the polymer material?
(many monomers joined to make polymer)
This means 1 part
This means 2 parts
This means 3 different parts
What effect does molecular weight have on polymerization?
Higher molecular weight means more polymerization
This property of materials can affect flow properties and water sorption
What are the 3 types?
Which polymers (spatial structures) present better flow at high temps and absorb less water?
This component of acylic materials contains:
This component of acrylic materials contains:
Cross linking Agents
How can monomer methyl methacrylate be polymerized to polymer polymethyl acrylate
In the reaction, what percent of the mixture is liquid monomer?
After polymerization you get acrylic product (polymerization is done on tooth after shaped)
This combo minimizes residual monomers and expedites polymerizationY
Is there significant differences between light and chemical curing?
Nope, just residual monomer amounts slightly differ (chemical can have more)
What occurs with the material during polymerization?
You don't want provisionals to fully set in place, during what phase do you insert it a couple times to prevent this?
methyl methacrylates (PMMA), ethyl methacrylates (PEMA), and vinyl ethylcrylates are what type of resin?
Resin composite is what type?
What to methyl methacrylates do during polymerization that can increase pulp irritation?
They have high ____
Good ___ and ____ and _____+
Color shades, stability, and wear resistance
Do ethyl methacrylates generate less or more heat than methyl methacrylates?
How do they compare with shrinkage?
Ease of use?
What is methyl methacrylates good for? Why is it bad?
Less heat from ethyl methacrylates
Less shrinkage from ethyl methacrylates
ethyl are easier to use, less damage to tissue
Color stability. High shrinkage.
This type of acrylic is a catalyst + base
High or low strength?
Non-brittle or brittle?
Which stage does it not have?
Low heat and shrinkage
Resin composite and acrylic are good for single unit restorations, but which is good for bridges?
Which is cheaper?
They have equivalent esthetics
Which is easier to reline?
Which lasts longer?
Provisional Composite ( bis acrylic) is more expensive, provisional acryl is more cheaper
Which has greater shrinkage, provisional composite (bis acryl) or provisional acrylic?
What has more color stability?
Which is has greater compressive strength?
Provisional Acrylic has more shrinkage.
Provisional Acrylic has better color stability
Composite (bis acryl)