1. WITH INSUFFICIENT LIGHT CURE, WHICH PART OF THE IMPRESSION WILL REMAIN SOFT(UNDER POLYMERIZED)
a-ext surface beneath light
b-core of composite
c-axial wall
Is it core? I agree with this.
2. which tooth will the matrix band be a problem with when placing a two surface amalgam
a. mesial on maxillary first molar
b. distal on maxillary first premolar
c. mesial on maxillary second premolar
d. distal on mandibular first molar
Is it not mesial of max. 1st PM & distal of max. 1st molar due to their concavities, but there is no such choice😕
3. all f the following cause vasoconstriction except
a. epinephrine b. norepinephrine c. phenylephrine d. levonor defrin
But They all r vasoconstrictor?? I looked for an answer here but no luck.
4. Most zinc-oxide-eugenol cements are not suitable
for permanent cementation of crowns and fixed
partial dentures because of
A. high viscosity.
B. low pH.
C. high solubility in saliva. I remember something about this one.
D. adverse pulp response.
5. The prime advantage of vacuum firing of porcelain
A. better colour.
B. less shrinkage.
C. more translucency.
D. increased strength. Vacuum firing helps improve the strength of the porcelaine.
6. a characteristic of the periodontium which allows safe temporary separation of the teeth is the
a. nature of acellular cementum
b. elasticity of bone
c. modified continuous eruption- *
d. passive eruption