Dental Materials Ch 27 Post Test 2023/2024 passed

Dental Materials Ch 27 Post TestThe maxillary impression tray should be loaded how?` - correct answer From the posterior Disinfecting the impression includes all of the following steps EXCEPT: - correct answer Spray entire impressions with disinfection solution and disinfect for 2 minutes What material may be used to cover fixed appliances so they do not become locked into the alginate impression material? - correct answer Rope wax When filling the maxillary impression tray, the alginate material should be _______. - correct answer Loaded from the posterior aspect of the tray, pushing the alginate anteriorly Beading wax may be added to the impression tray for which reason? - correct answer To protect tissues from injury Alginate impression material takes how long to set? - correct answer 3 - 4minutes Rope wax (beading wax) may be placed in which area of the tray if a patient has a high vault? - correct answer The palatal portion The gag reflex is triggered when material touches which portion of the tongue? - correct answer Posterior third Which impression should be taken first, and why? - correct answer Mandibular, because it builds patient familiarity/confidence. When preparing the patient for an impression the operator should: - correct answer > Place a napkin on the patient to protect his/her clothing > Explain the procedure to the patient > Place the patient in the upright position > Have the patient remove all removable appliances > Have the patient rinse with antibacterial mouthwash ______ or ______ are positive reproductions of the patient's dental arches and surround tissues. - correct answer > Study casts > Study models What is the first step in proper tray selection for alginate impressions? - correct answer Conduct an oral exam A __________ mm depth of alginate should extend beyond the occlusal surface in a properly fitting impression tray. - correct answer 2 - 3 Alginate powder should be allowed to settle for how long after fluffing? - correct answer 30 seconds When filling a mandibular impression tray, the alginate material should be _________. - correct answer > Loaded from one end of the tray to the other facial aspect of the tray The typical mixing time for alginate is _____ and the setting time for regular-set material is ___________. - correct answer 1 minutes, 3 - 4 minutes