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18 Cards in this Set
- Front
- Back
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What technique of provisional is preferred, prefabricated or custom?
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custom
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What is the main defining factor for using custom or pre-fabricated provisional?
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can you take impression of good tooth
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If you can't take an impression of a good tooth, can you do a custom provisional?
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yes - with a custom shell
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cellulose acetate or poly propylene are 2 examples of what?
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clear vacuum formed carrierrs for provisionals
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3 methods of capturing the internal surface form of preps for a provisional are...
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direct
indirect direct/indirect |
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Which method of capturing internal surface form is for FPDs?
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Indirect or indirect/direct
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Which method of capturing internal surface form is for FPDs and large units?
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indirect/direct
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Which method of capturing internal surface form is not for single tooth only?
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direct
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How do you do a indirect/direct capture of interal surface form for a provisional?
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you make a thin shell from a minimally prepared stone cast
then reline at chair w/ resin for pt |
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If you're going to make a repair, and you need to reline, what must you add?
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a vent hole
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Considerations for repairing provisionals....
____is easiest _____is difficult and better to remake _____must be CLEANED |
PMMA
bis-acryl resin |
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4 types of provisionals
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PMMA - JeT
bis acryl - integrity Poly R - methacrylate (SNAP) light cured - triad |
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what type of provisional is this?
good all around, shrinks and stinks exothermic reaction easy polished easy repair |
PMMA
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PMMA...
2 good things 3 bad things |
easy polish, easy repair
shrink stink exothermic |
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Poly R methacrylates
2 bad 2 good |
bad - smell, less strength
good - less shrink, not as exothermic |
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bis-acryl
4 good? 3 bad? |
good -
automix less shrink repairable (flowable) low heat of poly Bad -expnsive brittle -not easy to repair |
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Light cured
good? bad? |
not much good, but light cure on demand
Bad - need a translucent carrier only |
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Cements
2 options, what's more common? |
zn eugenol or non-eugenol
non is more common |
