381. The most accepted theory of tooth eruption is____________?

A. Hydrodynamic theory
B. Clone theory
C. Periodontal ligament traction theory
D. Vascular theory

382. Teeth with out antagonist if erupt is called____________?

A. Stable
B. Over erupted
C. Supra erupted
D. Submerged

383. Movement of tooth to close the intermaxillary gap during eruption is due to____________?

A. Physiological tooth migration
B. Active eruption
C. Passive eruption
D. None of the above

384. In mineralization which one of the following is known as Epitaxy ?

A. Booster Mechanism
B. Seeding theory
C. Alkaline Phosphatase theory
D. Cartier/s Adenosine Triphosphate theory

385. The first sign of future deciduous teeth as a thickening of oral ectoderm appears at about_____________?

A. 25th day of Intra uterine life
B. 34th day of Intra uterine life
C. 56th day of Intra uterine life
D. 20 wks of Intra uterine life

386. The deciduous teeth can be differentiated from permanent teeth by_____________?

A. Enamel prismatic arrangement
B. Dentinal tubule arrangement
C. Primary and secondary dentin
D. Mineral content

387. Which type of collagen fibers demonstrates Chicken wire configuration ?

A. Type I
B. Type II
C. Type III
D. Type IV

388. Oral tissue for microscopic examination is prepared by_______________?

A. Embedded in paraffin and sectioned
B. Embedded in paradion and sectioned
C. Frozen and sectioned
D. Specimens ground into thin sections
E. All of the above

389. Which enzyme is associated with the mineralization_____________?

A. Acid phosphatase
B. Alkaline phosphatase
C. Adenosine triphosphate
D. Amino peptidase

390. Hammock ligament is present_______________?

A. Between temporal and sphenoid bone
B. Between hamular notch and mandible
C. In apical area of a tooth
D. As a part of deep cervical fascia

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