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FREE DENTISTRY AND STUDY GAMES ABOUT CHAPTER 46
IMP EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -29 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: T/F : during the prep the dentist applies the light bodied material to the tooth, while the assistant would dispense heavy body in the tray
Answer:
T Question 2: The irreversible hydrocolloid material used most widely for preliminary impressions is
Answer:
alginate Question 3: what is the water to powder ratio for taking a maxillary alginate impression
Answer:
3:3
Question 4: Name at lest two types of elastomreic materials
Answer:
Polysulfide, polyether, silicone and polisiloxane
Question 5: name the 3 classifications of impressions
Answer:
preliminary, final and bite registration Question 6: if an alginate impression is stored in water or in a soaked paper towel, the alginate will absorb the additional water and expand. This property is called_______
Answer:
imbibition
Question 7: T/F Another term for polysulfide is rubber base
Answer:
T Question 8: Y/N : You would use fast set alginate for a gagger
Answer:
Y Question 9: T/F : a dental assistant is allowed to take a preliminary impression
Answer:
T
Question 10: Final impressions are taken by the
Answer:
dentist
Question 11: In what three ways are elastomeric materials supplied
Answer:
pastes, cartridges and putty
Question 12: What type of tray allows the material to lock on mechanically
Answer:
perfo
Question 13: what is a better way to say "packing the cord"
Answer:
placing the string Question 14: most alginate impressions must be poured within ______ so that distortion does not occur
Answer:
- hour
Question 15: What is the purpose of a wax bite registration
Answer:
to show the occlusal relationship of the teeth
Question 16: What does imbibition mean
Answer:
absorption of water causing object to swell Question 17: An impression is a ______ reproduction of teeth and surrounding oral tissues
Answer:
negative
Question 18: Is an impression , a negative or positive reproduction
Answer:
negative
Question 19: What is the organic substance of hydrocolloid material
Answer:
seaweed
Question 20: A ____ tray covers half of a dental arch
Answer:
quadrant
Question 21: how is light bodied impression material placed around the tooth
Answer:
with a syringe Question 22: Y/N : is agar derived from seaweed
Answer:
Y Question 23: The length or depth of the alginate impression tray borders can be extended by adding ____ to the tray
Answer:
utility wax Question 24: The model created from an impression is a _______ reproduction of the structures
Answer:
positive Question 25: An impression tray should be sufficiently deep to allow ___ mm of material between the tray and the incisal/occlusal edges of the teeth
Answer:
- - 3 mm
Question 26: Y/N : does extrude mean to push or force out
Answer:
Y Question 27: T/F : hydro means air
Answer:
F
Question 28: what type of wax is most commonly used for bite registration
Answer:
baseplate wax
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