Dentin

Questions	Answers
In predentin area, the area occupied by peritubular dentin is	About 3%
"Translucent dentin" is often butterfly shapped owing to	Convergence of dentinal tubules pulpally
"Translucent dentin" occurs when dentinal tubule infilled	At root apex from cementum extend cervically and towards root apex.  Direction is towards cervically.
Dentinal lymph has higher concentration of	Higher concentration of potassium ions and lower concentration of sodium ions.
"Aspiration" of odontoblastic nuclei occur	With releasing of compression of tooth, the nuclei is taken in to the tubule
From the pulp to DEJ, the mineral content of dentin, hardness and elastic modolous	Decreases
From the pulp to DEJ, thickness of mineral crystals	Increases
The intermediate dentin is	A layer between predentin and mineralized dentin
Major difference between the mantle dentin and circumpulpal dentin are	Mantle dentin is relatively less mineralized; collagen fiber are perpendicular to enamel; branched dentinal tubule; presence of mineralization by matrix mineralization
Mineral in dentin is deposited as	Globules or calcospherites