The mantle dentin found alon DEJ is
The mantle dentin found along the DEJ is about 20μm thick and it contains larger-diameter argyrophilic (silver stained) collagen fibers arranged perpendicularly to the DEJ. The circumpulpal dentin contains smaller-diameter closely packed collagen fibers. The dentin which forms after root completion is called secondary dentin.
20 μm
30 μm
40 μm
50 μm