Dental porcelains are crystalline materials of________________?
Dental porcelains are crystalline materials of________________?
		A.	Rubber
B.	Plastic
C.	Organic substances
D.	Glass
		A.	Rubber
B.	Plastic
C.	Organic substances
D.	Glass
		A.	Strengtherner
B.	Hardener
C.	Whitens the alloy
D.	Scavenger
		A.	Irreversible hydrocolloid
B.	Reversible hydrocolloid
C.	Impression plaster
D.	Metallic oxide paste
		A.	Morphine administration
B.	Breathing oxygen
C.	Aspirin administration
D.	Sublingual nitroglycerine administration
		A.	Require more mercury
B.	Require heavy compection forces
C.	Have longer setting times
D.	None of the above
		A.	Nucleus tractus solitarius
B.	Nucleus ambigous
C.	Dorsal nucleus of vagus
D.	Long tract of trigeminal nerve
		A.	Coronal half of root
B.	Apical half of root
C.	Apex of root
D.	Entire root