Flashcards
Acrylic resins
Cards in this deck (18)
- 1What are the stages involved in denture processing?Flasking
Wax elimination
Mixing/Packing/Curing
Deflasking
Shaping/Polishing - 2What are the stages involved in heat cure acrylic setting?Wet sand
Stringy
Dough
Rubbery
Polymerised hard - 3What activator is used in self-cure acrylic resins?Dimethyl paratoulidine
- 4What initiator is used in self cure + heat cure resins?Benzoyl peroxide
- 5What is the ratio of polymer:monomer in heat cure acrylics?2.5:1
- 6What is the ratio of polymer:monomer in self cure acrylics?2:1
- 7What are heat cure acrylics used for?F/P dentures
Maxilofacial prosthesis
Ortho appliances - 8What are self cure acrylics used for?Denture repair
Denture relining/rebasing
Temp denture bases
Temp restorations
Ortho appliances - 9What are light cure acrylics used for?Custom trays
Relining
Temp denture bases - 10Advantages of self cure over heat cure?Quicker curing time
- 11Disadvantages of self cure over heat cure?Porosity
Residual monomer irritant
80% of strength of HC
Poor colour stability - 12During packing, why is the mould full and under pressure?May lead to contraction porosity
- 13How long is the heat cure acrylic resin cured for?2 hrs at 72°c
2 hrs at 98.5°c - 14What are some good mechanical properties of denture bases?High elastic modulus
High impact strength
Abrasion resistance - 15What are some good physical properties of denture bases?Aesthetics
Radiopaque
Light weight
Tg high - 16What are some good chemical properties of denture bases?Non-absorptive
Not soluble - 17What are some good biological properties of denture bases?Non-toxic/irritant to patient / operator
- 18What are some good miscellaneous properties of denture bases?Inexpensive
Easy to repair/process
Long shelf life
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- Undergraduate Prosthetics Flashcards on Acrylic resins, created by 0 9 on 25/06/2016.
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