The auther observed the effect of dietary magnesium dificiency on the periodontal ligament of albino rats. The experimental animals wre fed with a diet deficient in magnesium for 1,2 and 3weeks. The sections were stained van Gieson, Mallory azan. Massons-Gomori¡¯s one step trichrom. Biolschowsky-Gomori, PAS reaction and Halmi stain. After 2 and 3weeks with dietary magnesium deficiency, argyrophilic fiber of periodontal ligament were showed increased-reactivity. Oxytalan fibers were not changed by magnesium deficiency.
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