1. Bud stage & Cap stage | Dr. Fathy Emad

Bud stage & Cap stage

1 / 10

The origin of enamel is:

Endoderm.

Ectomesenchyme.

Mesoderm.

Ectoderm.

2 / 10

The ectomesenchymal cell condensation just beneath the enamel organ is called:

pulp.

Dental sac.

Dental follicle.

Dental papilla.

3 / 10

The dental sac is:

The condensation of the ectomesenchymal cells surrounding the dental organ.

None of the above.

The condensation of the ectomesenchymal cells surrounding the dental organ and dental papilla.

The condensation of the ectomesenchymal cells surrounding the dental papilla.

4 / 10

The dental lamina:

Breaks at the cap stage.

Has no remnants.

Develops from the oral epithelium.

Has no branching.

5 / 10

Which of the following is a component of tooth germ?

Lateral dental lamina.

Successional lamina.

Vestibular lamina.

Dental sac.

6 / 10

Before enamel formation begins:

Both knot and cord disappear.

Both knot and cord remain.

Enamel knot remains and enamel cord disappear.

Enamel knot disappears and enamel cord remains.

7 / 10

The dental lamina is induced to proliferate into a tooth bud by the:

Nerve endings.

Oral epithelium.

Ectomesenchyme.

Basement membrane.

8 / 10

The tooth germ is composed of:

Dental follicle, dental lamina, vestibular lamina.

Dental papilla, dental follicle, dental organ

Dental organ, dental follicle, dental lamina.

Dental papilla, dental lamina, dental organ.

9 / 10

During the early stages of tooth development three transitory structures may be seen, these structures are:
a)
b)

Enamel knot, enamel epithelium

enamel organ & enamel epithelium

enamel organ & enamel knot

Enamel knot, enamel cord

10 / 10

The dental lamina initiating the permanent molars develops:

As lateral dental lamina.

As a distal extension of the dental lamina.

As successional lamina.

As vestibular lamina.

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