Quiz on Dentinogenesis

At which stage of tooth development does dentin formation begin?

• Cap stage

• Initiation stage

• Bell stage

• Maturation stage

What type of cells are responsible for the formation of dentin?

• Fibroblasts

• Chondrocytes

• Ameloblasts

• Odontoblasts

What is the primary component of predentin?

• Dentin matrix

• Enamel matrix

• Non-mineralized collagen fibers

• Mineralized collagen

What is the thickness of predentin typically?

• 20 microns

• 40 microns

• 10 microns

• 30 microns

What type of collagen is primarily found in predentin?

• Type I and II

• Type I and III

• Type II and III

• Type IV and V

What is the role of odontoblasts during dentin formation?

• Forming the pulp

• Secreting enamel

• Secreting the collagenous matrix

• Regenerating the tooth

What is mantle dentin characterized by?

• Presence of Von Korff fibers

• Absence of collagen

• High mineral content

• Uniform mineralization

What are the two patterns of dentin mineralization?

• Spherical and flat

• Cylindrical and planar

• Globular and linear

• Radial and linear

What happens during the globular pattern of dentin mineralization?

• Discrete areas of matrix calcification

• Uniform deposition of minerals

• Absence of collagen fibers

• Rapid degradation of dentin

What is the primary function of the odontoblast process?

• Secretion of enamel

• Formation of hydroxyapatite crystals

• Mineralization of enamel

• Regeneration of pulp