Zirconium Coating Optical Properties and Integrity
Increasing aesthetic expectations in today's contemporary dentistry applications have made all-ceramic restorations and zirconium infrastructure supported restorations more preferable due to their similarity to natural teeth. A metal substructure has been used for durability in porcelain crown and bridge applications. Since the disadvantages of this metal infrastructure in terms of gums, dental tissue, general body health and aesthetics are known, a search for an alternative material to metal has emerged in the porcelain infrastructure. The optical properties and integrity of these materials provide an excellent imitation of natural dental tissue. The light falling on the restoration is transmitted to the gingiva by being refracted in different ceramic layers. In this way, the gingiva acquires a vivid, fresh, pink color as in natural teeth, and the desired pink aesthetic is achieved. In metal-supported restorations, the incident light reflects off the metal surface, causing an unnaturally opaque appearance and a gray band at the gingival margins.
Advantages of zirconium supported restorations and all-ceramic restorations
- They allow light to pass through and the color of the gingiva is preserved at the restoration edge.
- They have a high aesthetic potential.
- They show a high similarity with natural teeth in terms of optical properties.
- Due to minimal microleakage, secondary caries is less common under restoration.
- Tissue compatibility is the best of all restorative materials.
- Thanks to its high tissue compatibility, their clinical life is longer.
- Not using metal infrastructure eliminates the risk of metal allergy and toxic reaction.
- Since they are generally produced with the help of computer-aided technologies, their production is easier and more reliable.