A. 35%
B. 50%
C. 4%
D. 96%
Related Mcqs:
- The percentage of inorganic matter in fully developed enamel is about____________?
A. 66%
B. 76%
C. 86%
D. 96% - 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 - Inorganic content of cementum is_____________?
A. Less than bone
B. More than bone
C. Equal to that of bone
D. More than that of enamel - Inorganic content of cementum is______________?
A. 45 to 50%
B. 50 to 55%
C. 55 to 60%
D. 60 to 65% - The oral and pharyngeal phases of swallowing take place very rapidly and last about______________?
A. 3.5 seconds
B. 1-1.5 seconds
C. 6.0 seconds
D. 9.5 seconds - When the prosthetic group of an enzyme is an inorganic ion, it is called a_____________?
A. Cofactor
B. Coenzyme
C. Apoenzyme
D. Holoenzyme - Inorganic phase of the composites aid in_______________?
A. Increasing the mechanical strength
B. Decreasing the coefficient of thermal expansion
C. Reducing the polymerization shrinkage
D. All of the above - Length of enamel rods is_____________?
A. Greater than the thickness of enamel
B. Less than the thickness of enamel
C. Equal to the thickness of enimal
D. None of the above
