Setting Reaction of Zinc Oxide and Eugenol !
نویسنده
چکیده
Zinc oxide-eugenol mixtures have been used in dentistry for a number of years. The setting mechanism of these mixtures was investigated. X-rav diffraction dat a and electron photomicrovaphs g ive ~vid~nce that a crystll:lline compound is formed. Analysis and molecular-weight dettrml.nat lons show t hat th,s compound corresponds t o the empirical formula (OIOH l.' O2) 2 Zn, ztnC eugenolate. Infrared data, as well as t he nonreactivity of meta and I?ara substituted phenols as compared to the ortho isomers, suggest that t he zinc eugenolate IS a chelate. The hardened mass consists of zinc oxide embedded in a matrix of long sheath-like crystals of zin c eugenolate. The excess eugenol is sorbed by bot h t he zinc eugenolate and the zinc oxide.
منابع مشابه
بررسی خواص فیزیکی و قابلیت انحلال و تجزیه پذیری سیمانهای حاوی عنصر روی در دندانپزشکی ترمیمی و مقایسه آنها با مقادیر استاندارد
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