Zinc oxide eugenol cements. VI. Effect of zinc oxide type on the setting reactions.
The particle size and adsorbed water on zinc oxide from various sources have been investigated and related to the reactivity with eugenol. The reactivity of zinc oxide with eugenol alone increases with the amount of water reversibly adsorbed. When 1% acetic acid is added to eugenol, the reactivity increases as the particle size of the oxide decreases. Generally, zinc oxide powders are deactivated by heat treatment because of coalescence of particles and loss of the ability to readsorb water.
D000327:Adsorption; D055598:Chemical Phenomena; D002621:Chemistry; D003461:Crystallography; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D014867:Water / Q000032:analysis; D015032:Zinc / Q000592:standards*; D015034:Zinc Oxide / Q000032:analysis / Q000592:standards*; D015035:Zinc Oxide-Eugenol Cement
D015035:Zinc Oxide-Eugenol Cement; D014867:Water; D015032:Zinc; D015034:Zinc Oxide