Journal of Dental Research, Vol 65, 978-981, Copyright © 1986 by International & American Associations for Dental Research Online Journals
An explanation for the "two fiber axes" problem in human enamel by x-ray diffraction
F. Hirota
Since Thewlis found the "two fiber axes" patterns on x-ray diffractograms
of human enamel in 1934, many investigators have studied this problem.
However, a definite answer has not yet been obtained. The present detailed
x-ray diffraction study showed that the "two fiber axes" patterns in human
enamel were caused by reflections from the two zones of the Hunter-Schreger
bands being recorded simultaneously on x-ray film, because we used an x-ray
beam far larger in size than the width of the Hunter-Schreger bands.