Amelogenesis 2

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

• Striae of Retzius

• Hunter-Schregger bands

• Cross-striations

• Developmental grooves

Weekly incremental lines (circaseptan) in enamel are called ?

• Cross-striations

• Striae of Retzius

• Hunter-Schreger bands

• Developmental grooves

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

• Ameloblastin

• Amelotin

• Enamelysin (MMP-20)

• KKL-3

The gender of an individual can be determined by the presence of this protein from pulp ?

• Enamelin

• Amelotin

• Enamelysin

• Amelogenin

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

• Amelogenin

• Enamelin

• Ameloblastin

• Tuftelin

A hereditary condition that only affects enamel in which enamel is either hypocalcified, hypomature or hypoplastic is known as :

• Osteogenesis imperfecta

• Dentinogenesis Imperfecta

• Amelogenesis Imperfecta

• Brittle bone disease

The two proteolytic enzymes that cleave enamel matrix proteins are :

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

• Nasmyth's membrane

• Primary enamel cuticle

• Enamel organ

• Reduced enamel epithelium

What is this condition known as ?

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Mutations in the gene encoding this enamel matrix protein is a cause of Amelogenesis Imperfecta:

• Amelogenin

• Ameloblastin

• Tuftelin

• Enamelin