Dental Cements

Topics: Zinc, Glass ionomer cement, Dental restoration Pages: 3 (740 words) Published: June 11, 2012
Wednesday, February 22, 2012|

Dental cements have a variety of uses and properties, upon which the American Dental Association and International Standards Organization have classified them. Type I cements are considered luting agents, which hold a cast restoration (such as a crown, bridge or veneer) to a tooth. Type II cements are used to restore teeth. Type III cements--called liners and bases--are placed within a cavity preparation, according to "Torres and Ehrlich Modern Dental Assisting."

There are several different types of cements used in dentistry including the following: Glass Ionomer Cement
Glass ionomer cement can be used to attach metal restorations and brackets used in braces to teeth. It can be supplied in bottles of powder and liquid, which are mixed on a glass slab or paper pad using a spatula. The liquid in glass ionomer cement contains itaconic acid, tartaric acid, maleic acid and water. The powder includes zinc oxide, aluminum oxide and calcium. One of the best qualities about this type of cement is that it releases Fluoride, which helps prevent tooth decay. It slowly is released from this powder because of its special combination of glass, ceramic particles and a glassy matrix. This type of cement is also less irritating to the pulp. Composite Resin Cement

Composite resin cement can be used to attach ceramic or resin inlays and onlays, veneers or metal restorations to teeth and also can be used for bands and brackets in braces. Composite resin cements have properties similar to those of composite resins, which are tooth-colored materials used for fillings. Composite resins contain quartz (a hard rock-forming mineral), glass, silica (a white colorless crystalline compound) and colorants. Zinc Oxide-Eugenol Cement

Zinc oxide-eugenol cement can be used to temporarily or permanently cement cast restoration or appliances. The liquid in zinc...
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