Oral Biology Exam-1 (Quiz MCQ)
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19/12--------24/12: Exam 1:Quiz (MCQ in: studied subjects + Slides identification).
- 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.
Questions: 10 | Attempts: 12367 | Last updated: Mar 22, 2022
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