Oral Biology Exam-1 (Quiz MCQ)

10 Questions | Total Attempts: 4094

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Oral Biology Exam-1 (Quiz MCQ) - Quiz

19/12--------24/12: Exam 1:Quiz (MCQ in: studied subjects + Slides identification).


Questions and Answers
  • 1. 
    No basal lamina is found between the cells of the:
    • A. 

      Stratum intermedium and inner enamel epithelium.

    • B. 

      Outer enamel epithelium and the dental sac.

    • C. 

      Inner layer of Hertwig's sheath and the dental papilla.

    • D. 

      Inner enamel epithelium and the dental papilla.

  • 2. 
    Passive eruption is:
    • A. 

      Growth in the length of the root.

    • B. 

      Apical migration of the junctional epithelium.

    • C. 

      Deposition of bone at the fundus.

    • D. 

      The formation of cellular cementum.

  • 3. 
    Which of the following has the highest mineral content?
    • A. 

      Predentin.

    • B. 

      Peritubular dentin.

    • C. 

      Intertubular dentin.

    • D. 

      Cementum.

  • 4. 
    The complex arrangement of rods over the cusps of teeth is termed:
    • A. 

      Prismless enamel.

    • B. 

      Prenatal enamel.

    • C. 

      Gnarled enamel.

    • D. 

      Postnatal enamel.

  • 5. 
    Dilaceration is:
    • A. 

      Distorted root or roots in a formed tooth.

    • B. 

      An extra root or accessory roots in a formed tooth.

    • C. 

      A union of root structure of two or more teeth through cementum only.

    • D. 

      A spherical projection on the cemental root surface.

  • 6. 
    Ameloblasts having ruffled borders are:
    • A. 

      Secretory ameloblasts.

    • B. 

      Maturative ameloblasts.

    • C. 

      Protective ameloblasts.

    • D. 

      Transitional ameloblasts.

  • 7. 
    The inter-globular dentin is found:
    • A. 

      Near the amelo-cemental junction.

    • B. 

      In the root dentin.

    • C. 

      Near the amelo-dentinal junction.

    • D. 

      Near the dentino-cemental junction.

  • 8. 
    Which of the following is most likely to be found in the dentinal tubules:
    • A. 

      Tomes' fibers.

    • B. 

      Oxytalan fibers.

    • C. 

      Tomes' process.

    • D. 

      Thick collagen fibers.

  • 9. 
    Shrinkage of stellate reticulum begins:
    • A. 

      At the cervical loop of the dental organ.

    • B. 

      After complete formation of the crown.

    • C. 

      At the middle portion of dental organ.

    • D. 

      At the height of incisal edge or cusp.

  • 10. 
    The formation of the enamel matrix between two short increments needs:
    • A. 

      One day.

    • B. 

      Two days.

    • C. 

      Three drays.

    • D. 

      Four days.

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