Dental crown is the visible upper part of the tooth or molar; this part is much smaller than the other, not visible part, the root.
The outside of the crown consists of a very hard substance: glaze. The rest of a tooth or tooth consists of dental bone. Tooth bone is less hard than glaze. Inside, blood vessels and nerves are running. For more information check wikipedia. Also you could check for dental crowns in Turkey. Dental travel to turkey for dental crowns.
Artificial dental crown
Besides a natural crown, there can also be an artificial crown. This is a cap of a ceramic and / or metal that fits exactly over a buffed tooth or molar and is glued to it. To give a crown the most natural appearance possible, the hood is constructed with a layer of translucent porcelain. An artificial crown is used if there is insufficient grip for a filling by tooth decay of a large part of the tooth or molar. Furthermore, there may be cosmetic motives; this usually involves badly formed or discolored teeth or opt for in the mouth.
Production of Dental Crowns
First a print of the teeth is made with a print material or with an intraoral scanner. The impression material may be of different composition, such as, for example, hydrocolloid, polyether, silicones or other polymers. Some impression materials are scannable so that they can be scanned directly without having to be poured into plaster. This print is then usually sent to a dental laboratory or a milling center. The manufacture of a crown is precision work and is increasingly milled using [(CAD / CAM)] and finished by a dental technician. The finished product is sent back to the treating dentist, where the crown is further provided with glue, to be placed on the buffed tooth or molar.
Mechanical stresses of Dental Crown
Because the tooth or molar and the artificial crown consist of two different types of materials and have a different thermal expansion coefficient in cold and heat, mechanical stresses occur on the thin surface of the composite glue, which can result in the release of the crown.
Because the new composite repair materials, see composite (dental filling), have now developed to such an extent that they are sufficiently wear-resistant (the problems of the first generations), and because in this repair technique the stresses are not only exerted on the adhesive surface, (less chance of release), there is discussion within dentistry about the preferred method.
By using air abrasion and laser techniques in combination with sticking techniques and composite fillings, see adhesive dentistry, it is possible to sacrifice less tooth tissue than with complete abrasion (placing an artificial crown).