The impression for a diagnostic cast of a partial edentulous mouth should be taken in_______________?
Correct answer: C. Hydro-colloid
- A. Impression wax
- B. Modelling compound
- C. Hydro-colloid
- D. Hydro cal
Explanation
A hydrocolloid, usually alginate, is commonly used for the preliminary or diagnostic cast because it is elastic, inexpensive, and records an entire partially edentulous arch adequately. Impression wax and modelling compound are not preferred for this purpose.
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