Setting reaction of zinc oxide and eugenol

Setting Reaction of Zinc Oxide and Eugenol !

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. Infr...

Thermal analysis of zinc oxide-eugenol cements during setting.

It has been accepted traditionally that the setting of zinc oxide-eugenol (ZOE) cements is the result of the formation of zinc eugenolate crystals.1 A recent study pointed out that at least seven hours elapsed before zinc eugenolate crystals precipitated from a clear solution of zinc acetate in eugenol.2 Accelerated ZOE, however, set in as short a time as three minutes.3 Electron microscopy, el...

Residual Eugenol From Zinc Oxide - Eugenol Compounds EUGENE

Subcutaneous Connective Tissue Reaction to a New Nano Zinc-Oxide Eugenol Sealer in Rat Model

INTRODUCTION The aim of this animal study was to evaluate the histological response of the new nano zinc-oxide eugenol (NZOE) sealer in comparison with Pulp Canal Sealer (ZOE based) and AH-26 (epoxy resin sealer). METHODS AND MATERIALS A total of 27 Wistar rats were used. Four polyethylene tubes were implanted in the back of each rat (three tubes containing the test materials and an empty tub...

The diffusion of glutaraldehyde from zinc oxide-eugenol cement.

The diffusion of glutaraldehyde from zinc oxide and eugenol cement (ZOE) into water was measured. The egress was found to be substantial and correlated to the amount of glutaraldehyde which was incorporated initially. The percentages of the fixative which diffused from the ZOE preparations containing 2,5, or 10% glutaraldehyde were virtually identical, demonstrating that there is no restriction...