Some Historadiographs of Human Dentin Structures

Scanning Electron Microscopic Studies of the Peritubular Dentin in Dogs

“…Many studies have been conducted on the presence or absence, and thickness of peritubular dentin. In the portion near the pulp of human coronal dentin, peritubular dentin is said to be extremely scarce or entirely absent [3,10,17].…”

“…Peritubular dentin of man, representing the most hypercalcified portion of the dentin, has been extensively studied by electron microscopy and microradiography [1][2][3][4][5][6][7][8][9][10][11][12]. Numerous arguments [13][14][15][16], however, took place on the formation of peritubular dentin and the final conclusion has not yet been drawn .…”

A Scanning Electron Microscopic Study of Dentinal Tubules in Dead Tracts

“…As exposed dentinal tubules were observed black with transmitted light , FIsH [1][2][3] gave the name of dead tracts on that area. Since then, studies were carried out on dead tracts by several authors [5][6][7]. Recently it was considered that odontoblastic processes may completely be destructed with strong irritation, the tubules were sealed by secondary dentin, and forms empty dentinal tubules.…”

“…Inorganic substance precipitation was clarified by microradiography [5][6][7] or transmission [8][9][10][11][12][13][14][15][16][17][18][19][20] and scanning electron microscopic studies [21,22] in the relatively old aged teeth without clinical evidence of caries, or the teeth with exposed dentinal tubules caused by attribution or abrasion as well as caries.…”

“…VAN HUYEN et al [5], ISOKAWA et al [6], TODA et al [7] clarified inorganic substance precipitation on the surface of exposed dentin due to attribution or abrasion and then observed quantitative increment of peritubular dentin as well as occlusion of dentinal tubules.…”