Question 126 · LDEK · Other
Indicate the types of gypsum used in orthodontics:
- A. impression plaster, model plaster, dental stone characterized by decreased strength and high expansion.
- B. impression plaster, model plaster, synthetic.
- C. model plaster, dental stone characterized by decreased strength and high expansion, dental stone characterized by increased strength and low expansion.
- D. synthetic, model plaster, dental stone characterized by increased strength and low expansion.
- E. model plaster, dental stone, synthetic.
Hint
Orthodontic impressions are taken with alginate or silicone, so ask which gypsum is unnecessary and which stones are used for casts.
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