Q3: Lab 1 - Primary Impression Making Flashcards
3
What is the purpose of making primary impressions?
3
What are 3 landmarks that must be captured in the primary impression?
3
Accurate casts, which record all anatomic landmarks, will expedite the _____ when making the final impression.
7
What can you add to your impression tray if the tray is under-extended? What does this help improve and eliminate?
11
What is the purpose of placing alginate on the palate and corono-maxillary space?
15
What are two advantages of alginate?
15
What are two disadvantages of alginate?
16
What is the filler component that controls stiffness of set in alginate?
16
What is the reactant in alginate?
16
What is the gypsum compatbility component in alginate?
16
What is the retarder in alginate?
18
________ increase if the impression is left in the patient’s mouth for 2-3 minutes after gelation?
19
What are the effects on working time, setting time, and flexibility is water ratio is decreased?
19
What is the effect of cool water on working time and setting time?
20
What is imbibition?
20
What is syneresis?
22
What is the purpose of soaking casts in slurry water for 5-10 minutes?
23
What should be the thickness of the base? What should be the land area measurement? What should be the vestibular fold measurement?
26
What are three things that need to be minimally blocked out when doing the custom tray fabrication for edentulous patients?
27
What are 4 purposes of custom trays for edentulous patients?
27
What is the technique called that we are doing and what material will we be using?
29
The posterior line drawn on the maxillary cast should be just posterior to the _______.
30
How far above the graphite line on your cast should the blue line be? What does the blue line represent?
30
On the maxillary cast, what are the two places where the blue line and the graphite line will be in the same position?
31
What do you need to make sure you cover when outlining the mandibular cast?
32
On the mandibular cast, what is the area where the blue line and the graphite line will be the same?
33
What is the purpose of the selective pressure method?
36
The tray handle of the custom tray should not interfere with the ______ or with the ______ during border molding.
36
What is the length, width, and thickness of the handle for the custom tray?
