Amelogenesis 3 Test

Odontoblasts actively transport which ions to the mineralization site?

• Phosphate ions

• Potassium ions

• Calcium ions

• Sodium ions

The process of mineralization is unique in which tooth structure?

• Dentin

• Cementum

• Bone

• Enamel

Corkscrew appearance is seen with which type of fibrils?

 

• Collagen type 1

• Collagen type 5

• DPP

• Collagen type 4

Second most abundant component formed in the dentine collagen matrix formed is?

• Collagen type 6

• Collagen type 1

• DPP

• DSP

Dentine formation begins at which stage of tooth development?

• Bud stage

• Cap stage

• Bell stage

• Cap to bud stage

The type of amelogenesis imperfecta in which the enamel is dark and mottled is?

• Hypomaturation

• Hypocalcified

• Hypoplastic

• Hypercalcified

The ameloblasts that remain till the end of the amelogenesis become:

• Nasmyth's membrane

• Primary enamel cuticle

• Reduced enamel epithelium

• Junctional epithelium

The most abundant protein found in mature, fully formed enamel is?

• Amelogenin

• Tuftelin

• Ameloblastin

• Enamelin

Which proteolytic enzyme cleaves amelogenins and enamelins during the maturation stage of amelogenesis?

• KKL-3

• Enamelin

• Enamelysin (MMP-20)

• Amelogenin

Daily incremental lines about 2.5 to 6 microns apart in enamel are called?

• Striae of Retzius

• Hunter-Schreger bands

• Andersen's lines

• Cross-striations