Which of the following is true about Agar hydrocolloid impression material ?
Correct answer: A. Liquefies between 71 - 100°C
- A. Liquefies between 71 - 100°C
- B. Solidfies between 50 - 70°C
- C. Facilitates fabrication of metal dyes
- D. Cannot register fine surface details
Explanation
Agar is a reversible hydrocolloid that liquefies when heated, usually within about 71 to 100°C, and gels on cooling. It can record fine details, so the statements denying detail reproduction are false.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Impression Materials
102 free Impression Materials MCQs from Dental Materials, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Dental Materials questions like this
Dental Materials is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Impression Materials questions
Linear contraction of elostomeric impression with passage of time is highest in______________?
When making a polysulphide impression for a caste crown, custom trays are usually preferred over stock trays for all of the following reasons except_______________?
The cross linking agent of polysulphide rubber base impression material is______________?
Which one of the following increase the strength and reduce viscosity of agar hydrocolloid impression material_____________?
The water powder ratio of alginate is______________?
Best impression material to be used for securing impression after crown preparation_______________?