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Journal of Dental Research
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The Pathway of Enamel Rods at the Base of Cusps of Human Teeth

Ziedonis Skobe

Forsyth Dental Center, 140 The Fenway, Boston, Massachusetts 02115

Samuel Stern

Boston University, 755 Commonwealth Avenue, Boston, Massachusetts 02215

Enamel increases in volume and surface area with distance from the dentin-enamel junction, particularly at cusps, while the number of rods remains constant. Our results indicate that the increase in volume may be due to the increased rod diameter near the tooth surface, a circumferential winding of rods in the parazone orientation of Hunter-Schreger bands, and the migration of rods from a mid-coronal origin at the dentin surface to a cuspal termination at the tooth surface. Increased surface area can be explained by the increased rod diameter and the oblique approach of rods to the tooth surface.

Journal of Dental Research, Vol. 59, No. 6, 1026-1032 (1980)
DOI: 10.1177/00220345800590060401
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