Q3: Lab 1 - Primary Impression Making

Question 1

3

What is the purpose of making primary impressions?

Question 2

3

What are 3 landmarks that must be captured in the primary impression?

Question 3

3

Accurate casts, which record all anatomic landmarks, will expedite the _____ when making the final impression.

Question 4

7

What can you add to your impression tray if the tray is under-extended? What does this help improve and eliminate?

Question 5

11

What is the purpose of placing alginate on the palate and corono-maxillary space?

Question 6

15

What are two advantages of alginate?

Question 7

15

What are two disadvantages of alginate?

Question 8

16

What is the filler component that controls stiffness of set in alginate?

Question 9

16

What is the reactant in alginate?

Question 10

16

What is the gypsum compatbility component in alginate?

Question 11

16

What is the retarder in alginate?

Question 12

18

________ increase if the impression is left in the patient’s mouth for 2-3 minutes after gelation?

Question 13

19

What are the effects on working time, setting time, and flexibility is water ratio is decreased?

Question 14

19

What is the effect of cool water on working time and setting time?

Question 15

20

What is imbibition?

Question 16

20

What is syneresis?

Question 17

22

What is the purpose of soaking casts in slurry water for 5-10 minutes?

Question 18

23

What should be the thickness of the base? What should be the land area measurement? What should be the vestibular fold measurement?

Question 19

26

What are three things that need to be minimally blocked out when doing the custom tray fabrication for edentulous patients?

Question 20

27

What are 4 purposes of custom trays for edentulous patients?

Question 21

27

What is the technique called that we are doing and what material will we be using?

Question 22

29

The posterior line drawn on the maxillary cast should be just posterior to the _______.

Question 23

30

How far above the graphite line on your cast should the blue line be? What does the blue line represent?

Question 24

30

On the maxillary cast, what are the two places where the blue line and the graphite line will be in the same position?

Question 25

31

What do you need to make sure you cover when outlining the mandibular cast?

Question 26

32

On the mandibular cast, what is the area where the blue line and the graphite line will be the same?

Question 27

33

What is the purpose of the selective pressure method?

Question 28

36

The tray handle of the custom tray should not interfere with the ______ or with the ______ during border molding.

Question 29

36

What is the length, width, and thickness of the handle for the custom tray?