A. It has only a small percent of organic content
B. Its formative cells are lost once it is completely formed
C. It is essentially a keratin tissue and has no blood vessels
D. It has no direct connection with the active cells of the dental pulp
Related Mcqs:
- Ratio of diameter of enamel rods in the DEJ to the enamel surface is______________?
A. 1:4
B. 1:1
C. 1:2
D. 2:1 - Temporary structures in enamel organ are (before enamel formation) ?
A. Enamel knot
B. Enamel cord
C. Both A and B
D. Enamel Cuticle - Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?
A. Base to base
B. Apex to base
C. Apex to apex
D. None of the above - The preferred material for repair of fractured denture base is______________?
A. Chemically cure resin
B. Heat curve resin
C. Light cure resin
D. Vinyl resin - The β (Beta) hemihydrate of gypsum requires more water to float its powder particles because______________?
A. They are more regular in shape and dense
B. They are more regular in shape and highly porous
C. They are more irregular in shape and porous
D. They are more dense and prismatic in shape - Glutaraldehyde is preferred more than formaldehyde because______________?
A. It has got more bactericidal activity
B. It has got more bacteriostatic activity
C. It has got no deleterious effect on the cement and lenses of instruments
D. Its application is easier - Tetracycline is more preferred in periodontics because______________?
A. It is broad spectrum antibiotic
B. It has anticollagenolytic effect
C. All of the above
D. None of the above - A patient on digoxin should not be given quindine because______________?
A. Displaces digoxine from its tissue binding sites
B. Displaces digoxin from its protein binding sites
C. Decrease the renal clearance of digoxin
D. Decreases the plasma potassium level - ovidone iodine is the choice of mouthrinse in cases associated AIDS because______________?
A. It is a topical antimicrobial
B. It is a topical anesthestic
C. Its ability to aid in blood coagulation
D. All of the above - Drugs like barbiturates precipitate symptoms of prophyria because______________?
A. They depress ALA synthase
B. They inhibit ALA synthase
C. They induce heme oxygenase
D. They inhibit heme oxygenase
