Types of porcelain dental restorations

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When you happen to lose or chip a tooth, or have an enamel discoloration (may due to fluoride or tetracycline effects), your dentist may suggest porcelain as an option to give you a smile makeover. Currently these are the popular porcelain dental restorations that many dental offices are making suggestions for Emax, Cercon, porcelain fused to precious metal, titanium porcelain... So, what are the characteristics of different types of porcelain?

Basically, porcelain teeth are made with framework underneath a coating of porcelain. Porcelain teeth can be divided into two basic types: porcelain fused to metal crown and all-porcelain (all ceramic) teeth.

Porcelain fused to metal

Made of a metal framework underneath and porcelain layer fused on the outside, porcelain fused to metal crown - due to the color changing nature of metal being in our mouth's environment, easily change color, resulting in the metal line becoming visible at the gumline after a period of use, and some metals may lead to allergy. But the advantages of porcelain fused to metal crown are that the costs are low, and they can be used to make long bridges. Metals in use can be any of the followings:

"¢ Porcelain fused to Nickel Chrome framework: the cost is affordable. But Nickel may cause allergic reactions in some people.

"¢ Porcelain fused to Cobalt Chrome framework: this framework is made from Chrome and Cobalt metal. Because there's no Nickel, the framework is less likely to irritate those with allergens.

"¢ Porcelain fused to Nickel-Chrome-Titan framework: titanium enables porcelain teeth to weigh less, especially in cases of long dental bridges

"¢ Porcelain-fused-to-precious metal framework: the framework is made from Au (85 percent) and Pt (11 percent), more durable and biocompatible.

All Porcelain (non-metal Porcelain, All Ceramic)

Made entirely of porcelain (ceramic). It is natural-looking, is extremely strong and is characterized by biocompatibility. Its color doesn't change even after  many years of use. The most common brands for all-porcelain teeth are Emax, Cercon and Vita.

With the latest dental technology, we now have all-porcelain crowns made with the assistance of computers, which is also known as CAD/CAM (Computer Aided Design/Computer Aided Manufacturing). CAD/CAM porcelain teeth do have a very high level of precision and aesthetics. The framework can be made with glass porcelain or Zirconia. Glass porcelain framework gives restoration the highest esthetic. Meanwhile, Zirconia is a high-technical material, which has been used to make spacecrafts, and artificial hip joints... This has a very high durability and good force absorption ability, so that it can be used to make long dental bridges. With all the advantages mentioned above, all-porcelain crowns are the most common choice for dental restorations.

This article is made available with the assistance of Lan Anh Dental Clinic

149 Ton Dat Tien St., Kenh Dao, Phu My Hung, Dist. 7, HCMC. Tel: 5 411 5566

292 Huynh Van Banh St., Phu Nhuan Dist., HCMC. Tel: 3 844 2838

130 Ha Huy Tap St., Phu My Hung, Dist. 7, HCMC. Tel: 5 411 1616

Website: www.NhakhoaLanAnh.com

Email: lananhdental@gmail.com

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