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Dental Materials
Chapter 27- Taking Alginate Impressions
Question | Answer |
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When preparing the patient for an impression the operator should: A. explain the procedure B. place a napkin C. place the pt. in upright position D. remove all removable appliances E. rinse w/ a mouth wash F. all the above G. a, b, and d only | F. all the above |
When taking a maxillary impression, a right-handed operator should be standing in which position? A. 12:00 B. 7:00 C. 11:00 D. 9:00 | C. 11:00 |
When mixing alginate impression material: A. add the water to the powder B. add the powder to the water C. add the powder and water together; at the same time D. either water or powder can be added in any sequence | B. add the powder to the water |
All of the following statements are T about the working time of alginate except one. A. working time begins when water and powder come together B. cooler water increases C. warmer water decreases D. working time begins when the impression is seated | D. working time begins when the impression is seated |
The typical mixing time for alginate is _____ and the setting time for regular material is ______. A. 1 min; 1-2 min B. 1 min; 3-4 min C. 3-4 min; 1 min D. 1-2 min; 1 min | B. 1 min; 3-4 min |