Crowns Dental are tooth – shaped caps that cover the damaged teeth or that have been damaged, such as those that are broken.Dental Cements, which are used to hold the crowns of the teeth are manufactured by combining powders with liquids. Several types of cements dental crowns either temporarily or permanently.
The zinc phosphate cement to basis of water, is one of the oldest dental cements used to bond permanently crowns to teeth. The zinc phosphate mixture produces an exothermic reaction, which means that heat is released by mixing. Therefore, zinc phosphate should be mixed with a spatula and a slab of fresh, dry and coarse glass having about 68 degrees (20 ° C) temperature.
Zinc phosphate can also be used in the preparation of deep cavities to protect the tooth thermal shocks that occur to sudden temperature changes in a tooth. The main component in the liquid portion of zinc phosphate is phosphoric acid, which can irritate the pulp, the root portion of a tooth that has blood vessels and nerves. As a result, you must first place a desensitizing a tooth before zinc phosphate.
Zinc oxide eugenic
Zinc oxide eugenic, cement-based oils, it can be used to build temporary or permanent dental crowns on teeth. Zinc oxide eugenic should be mixed in a notebook oil-resistant paper that will not absorb the liquid contents. Eugene cement in this really relieves irritation of the pulp and is good for patients who are experiencing tooth sensitivity, although the eugenic has a strong odor. The removal of zinc unused or excess oxide-eugenic may be difficult after hardening, in which case a solvent called orange oil can be used, according to “Dental Materials: Properties and Manipulation”.
The glass monomer is extremely versatile, as it can easily join the enamel, the hard white material covering the crown of a tooth, as does the metal. In fact, the glass monomer cement can be used for a metal crown. Also this product slowly releases fluoride when applied to a tooth, helping to prevent recurrent caries in that area.
The glass monomer is also gentle to the dental pulp and readily adheres to a tooth surface slightly moist. This cement is easy to use when seating a dental crown, since it is thin. This material can be mixed well in a cool, dry plate glass, or a block of paper. However, this type of cement also exists in the form of a capsule can be crushed or mechanically mixed, and then dispersed using a dispenser.