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Dental Anatomy - 3 Questions
The DEJ scalloping is due to:1). Enamel spindles2). Interlocking of enamel and dentin for better adhesion - convexities towards dentin3). Tomes granular layer4). Predentin
Scalloping of the DEJ increases the surface area for bonding and resists shear forces. Enamel pits interlock with dentin.
Predentin is:1). Unmineralized organic matrix of dentin, 10-40 micron, stains with eosin2). Mineralized3). Sclerotic4). Enamel matrix
Predentin is non-mineralized and contains collagen and non-collagenous proteins. It is converted to dentin at the mineralization front by calcification globules. Its thickness increases in vitamin D deficiency and hypophosphatasia.
The primary canine is usually exfoliated between the ages of 10 and 11 years
MCQ