Dentin

Questions	Answers
The approximate number of tubules in inner dentin is	50,000 per sq mm
The approximate number of tubules in middle of dentin is about	40,000 per sq mm
The secondary curvature of dentinal tubule sometime coincide with adjacent dentin tubule, giving a appearance of line crossing dentin is	Contour line of Owen
As compared to intertubular dentin, Peritubular dentin lacks a	Collagenous fibrous matrix
The type of dentin seen in routine demineralized section is	Intertubular dentin
During routine demineralization, the type of dentin lost is	Peritubular dentin
The cause of loss of peritubular dentin in conventional demineralizaton is	Its lack of collagen, that imparts the stability
The mineral component of peritubular dentin is	Carbonated appatite
The difference between crystalline forms of peritubular and intertubular dentin is	Peritubular dentin has predominantly hexagonal shapped crystallites while intertubular dentin crystallites appears as compact platelets
In peripehral or mantle dentin, peritubular dentin occupies	Two thid of entire cross section of dentin.