A. Enamel cannot form in absence of dentin
B. The formation of enamel and dentin are independent of each other
C. Enamel formation can occur in absence of dentin
D. None of the above
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Dental lamina is active up to_______________?
0
Ectodermal cells in tooth bud are responsible for_______________?
A. 1 year
B. 2 years
C. 3 years
D. 4 years
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In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?
A. Determination of shape of crown and root
B. Formation of periodontal ligament
C. Formation of cementum
D. Formation of pulp
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Hertwig’s epithelial root sheath is made up of_______________?
A. Bud stage begins
B. Cap stage begins
C. Bell stage begins
D. Dental lamina begins forming
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Following is derivative of dental lamina____________?
A. Outer and inner enamel epithelium
B. Stratum intermedium
C. Stellate reticulum
D. Hyaline layer of Hopewell-smill
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Accessory canals result from____________?
A. Epithelial rests of Malassez
B. Enamel pearls
C. Rests of serrae
D. All of the above
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A supernumerary tooth results from a deviation during_____________?
A. Defects in cementogenesis
B. Dividing epithelial bridges
C. Break in Hertwig’s root sheath
D. Adherent epithelial rests
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Blood supply of ameloblast for most of its life cycle comes form_______________?
A. Initiation
B. Differentiation
C. Apposition
D. Calcification
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The successors of deciduous teeth develops form_______________?
A. Dental papilla
B. Reduced enamel organ
C. Dental Sac
D. Dental pulp
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