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  2. Zinc oxide eugenol - Wikipedia

    en.wikipedia.org/wiki/Zinc_oxide_eugenol

    Zinc oxide eugenol (ZOE) is a material created by the combination of zinc oxide and eugenol contained in clove oil. An acidbase reaction takes place with the formation of zinc eugenolate chelate. The reaction is catalysed by water and is accelerated by the presence of metal salts.

  3. Dental cement - Wikipedia

    en.wikipedia.org/wiki/Dental_cement

    Water-based acid-base cements: zinc phosphate (Zn 3 (PO 4) 2), zinc polyacrylate (polycarboxylate), glass ionomer (GIC). These contain metal oxide or silicate fillers embedded in a salt matrix. Non-aqueous/oil base acid-base cements: zinc oxide eugenol and non-eugenol zinc oxide. These contain metal oxide fillers embedded in a metal salt matrix.

  4. Dental material - Wikipedia

    en.wikipedia.org/wiki/Dental_material

    Setting takes place by a combination of acid-base reaction and chemically activated polymerization. Zinc oxide eugenol. Zinc oxide eugenol has the lowest compressive and tensile strength of the liners, so its use is limited to small or non-stress-bearing areas such as Class V cavities. This cavity lining is often used with a high strength base ...

  5. Eugenol - Wikipedia

    en.wikipedia.org/wiki/Eugenol

    Eugenol is used as a flavor or aroma ingredient in teas, meats, cakes, perfumes, cosmetics, flavorings, and essential oils. [2] [17] [18] It is also used as a local antiseptic and anaesthetic. [19] [20] Eugenol can be combined with zinc oxide to form zinc oxide eugenol which has restorative and prosthodontic applications in dentistry.

  6. Luting agent - Wikipedia

    en.wikipedia.org/wiki/Luting_agent

    Non-eugenol materials use long-chain aliphatic acids or aryl-substituted butyric acid to react with zinc oxide particles. [1] Eugenol itself is known to be incompatible with resin polymers, [ 23 ] as it is a radical scavenger (like other phenolic compounds ) and therefore inhibits polymerisation of resin materials.

  7. Dental composite - Wikipedia

    en.wikipedia.org/wiki/Dental_composite

    In preparing a cavity for restoration with composite resin combined with an acid etch technique, all enamel cavosurface angles should be obtuse angles. Contraindications for composite include varnish and zinc oxide-eugenol. Composite resins for Class II restorations were not indicated because of excessive occlusal wear in the 1980s and early ...

  8. Thousands of liters of chemicals dumped into Brazilian river ...

    www.aol.com/thousands-liters-chemicals-dumped...

    The trucks were carrying about 25,000 liters of pesticides and 76 tons of sulfuric acid, according to the National Agency for Water and Basic Sanitation, raising concerns about environmental damage.

  9. Acid–base extraction - Wikipedia

    en.wikipedia.org/wiki/Acidbase_extraction

    Acidbase extraction is a subclass of liquid–liquid extractions and involves the separation of chemical species from other acidic or basic compounds. [1] It is typically performed during the work-up step following a chemical synthesis to purify crude compounds [2] and results in the product being largely free of acidic or basic impurities.