Please discuss!

[Honey2006]

1,The contraction (Gaseous) porosity in inlays is related to

A. Overheating of the alloy
B. Molten gases
C. Diameter of the sprue
D. Overheating of investment

2,Where would you expect to find the Mylohyoid on relation to
periphery of complete denture

A. Mandibular buccal in the midline
B. Mandibular lingual in the midline
C. Mandibular disto buccal area

3,The first forming microbial elements of plaque are

A. Aerobic gram positive G+
B. Aerobic gram negative G-
C. Anaerobic gram negative G-
D. Spirochetes
E. Anaerobic gram positive G+

4,Sensitivity to hot and cold foods soon after cavity
preparation and placement of GIC and composite resin in an
upper incisor tooth is due to?

A. Mechanical trauma due to cavity preparation
B. Chemical
C. Heat from GIC

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[JessD]

.

 

[ssilver]

In another question it has another option which I think is the correct one:
D. Mandibular lingual in the first premolar area

 

[ssilver]

according to wikipedia:
A facultative anaerobic organism is an organism, usually a bacterium, that makes ATP by aerobic respiration if oxygen is present but is also capable of switching to fermentation. In contrast, obligate anaerobes die in presence of oxygen.
& we know that the initial bacteria are gram + facultative anaerobics.
I think I'll go for option a

 

[ssilver]

Since Gl 's setting has a "low exothermic" reaction it's rather unlikely to disturb the tooth and since we see this kind of sensitivity in amalgam filling too, I guess the proper option is A.