Which of the following is not part of the tooth germ?

• Dental papilla.

• Dental follicle.

• Dental lamina.

• Enamel organ.

The dental follicle:

• Is an epithelial structure.

• Give rise to the radicular pulp.

• Is not present in permanent teeth.

• give rise to cementum.

The development of the root begins when

• The inner and outer dental epithelium reaching the future C.E.J

• The crown is completely formed

• The development of the supporting bone begins

• The development of the periodontal ligament begins.

Which of the following is not true of Hertwig's epithelial root sheath?

• It lacks a stellate reticulum.

• It is derived from stomodeal ectoderm.

• Its remnants form epithelial rests.

• It remains intact until a layer of cementum has been formed.

The dental follicle gives rise to:

• Cementoblasts and periodontal ligament.

• Periodontal ligament and dental pulp.

• Dental pulp and attachment epithelium.

• Odontoblasts and Cementoblasts.

Which statement about early dental development is incorrect?

• Cap stage is accomplished by unequal growth in different parts.

• In the cap stage the inner and outer enamel epithelial cells are completely alike.

• The transition from cap stage to bell stage is particularly marked by the full differentiation of stellate reticulum.

• The dental papilla and the dental sac develop in the cap stage.

Primary epithelial band is formed due to

• Increased proliferative activity of epithelial cells

• Change in the orientation of mitotic spindles

• Change in the cleavage plane of dividing cells

• Both b & c

The epithelial component of the tooth germ is known as:

• Dental lamina.

• Dental papilla.

• Enamel organ.

• Dental follicle.

Which of the following is associated with an erupted tooth?

• Outer Enamel epithelium.

• Cervical loop.

• Epithelial rests of Malassez.

• Stratum intermedium.

According to universal system right upper second molar is written as

• 2

• 12

• 7

• 7