[Physiological shifts in female workers engaged in the manufacture of insulating materials].
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Adult↗
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Microleakage under amalgam restorations lined with Copalite, Amalgambond Plus, and Vitrebond.
To evaluate the effectiveness of 3 cavity-preparation lining agents in reducing microleakage under amalgam restorations, the apices of 64 human molars were sealed with amalgam, and Class V preparations were placed. Following storage and thermocycling, the molars were placed in acid fuchsin for 24 hours, then sectioned longitudinally. Ranked data were used to score dye penetration. A Kruskal-Wallis statistical test was used to compare the three groups to the control. Teeth treated with glass ionomer cement showed a statistically significant increase (p = .0227) in dye penetration. Dye penetration increased when Amalgambond Plus and glass ionomer resin liner were placed under amalgam restorations. No difference in dye penetration was observed when Copalite was applied. Results of this study do not support routine use of these agents under amalgam restorations for control of microleakage.
Calcium Hydroxide↗
Occupational dermatitis to ultraviolet-cured acrylic-based inks in computer hard disc manufacturing.
OBJECTIVE: Ultraviolet-cured acrylates and their various components and applications are reviewed in this report. METHODS: A 26-year-old woman involved in silk screening computer discs with ultraviolet-cured inks developed an acute allergic contact dermatitis on her hands and forearms. Patch testing revealed a number of strong reactions to epoxy resin and many multifunctional acrylates. RESULTS: The only one listed on the material safety data sheet to which she reacted was tripropyleneglycol diacrylate (TRPGDA). The other positive reactions likely represent cross-reactions. The positive reaction to epoxy is possibly relevant and attributable to nonhardened epoxy resin contaminant in the epoxy prepolymer. CONCLUSION: This case report shows a new application for ultraviolet-cured acrylate based inks in computer hard disc manufacturing.
Acrylates↗