DASLE MN QUESTIONS AND ANSWERS ALREADY PASSED

DASLE MN QUESTIONS AND ANSWERS ALREADY PASSED When taking alginate impressions, having the patient swish with a mouth rinse such as Listerine prior to impressing helps decrease all of the following except: a: drooling by the patient B: microorganisms on the impression C: gagging by the patient D: bubb les in the material ✔✔a: Drooling by the patient You are seating your patient to take alginate impressions, what position will you have them in? A: upright B: reclined C: standing D: supine ✔✔a: Upright Which of the following would not be an effective communication method? A: ask the patient to use predetermined hand signals to communicate with you B: explain to the patient that the material may feel cold C: Ask the patient to breath through their mouth D: inform the patient that they can bring their head forward and off the headrest once you have seated the impression ✔✔C: Ask the patient to breath through their mouth In order to best record the muscle attachments, frenums, and achieve a complete periphe ral roll, the operator will need to perform_________ by gently massaging the patients lips and cheeks. A: facial trimming B: frenectomy C: muscle trimming D; muscle rolling ✔✔C: muscle trimming A main advantage of polyvinyl siloxane is that it has high di mensional stability and pouring can be delayed for up to 7 -10 days without distorting. True False ✔✔TRUE Polysulfide is an impression material where the disadvantages outweigh the advantages. Some of the main disadvantages are the odor, bad taste, it stai ns, and has a long setting time. True False ✔✔TRUE An impression tray should extend _____ mm beyond the last tooth in the arch. A: 1-2 B: 2-3 C: 3-4 D: 4-5 ✔✔B: 2-3 If an alginate impression remains in the open air, moisture will evaporate from the mater ial, causing it to shrink and distort. This condition is called: A: expansion B: imbibition C: synersis D: adaptation ✔✔C: synersis As a right handed operator, when seating the mandibular impression, you want to be standing at the side of the patient, near 8 -9 o'clock. When seating the maxillary impression, you will want to be behind the patients head, near 11 -12 o'clock. True False ✔✔TRUE When might the fabrication of a custom tray be necessary? A: the stock trays do not fit the patients mouth properly B: the patient is edentulous C: the patient needs whitening trays D: the patient needs a specific orthodontic appliance E: all of the above ✔✔E: all of the above The purpose for the perforations in the impression trays is: A; to allow the impression material to flow out of the perforations B: creating a mechanical lock between the impression and the tray to allow for easier cleaning of the trays C: to allow air to escape in order to reduce the amount of bubbles in the impression D: to help reduce gagging by allowing excess material out of the mouth ✔✔A; to allow the impression material to flow out of the perforations What is the water -to-powder ratio for taking an adult maxillary alginate impression?