To date, bridges, inlays or crowns were usually manufactured as metal-ceramics composite systems. Unfortunately, this technique is also associated with disadvantages:
- in part major loss of own tooth substance associated with the grinding down needed to accommodate the increased space requirements for the metal-ceramics restoration
- the aesthetic appearance can be reduced due to exposed metal rims, especially after the long-term wear
- metal ions can be released into the tissue of the body, causing irritation and discoloration of the gums among other things.
However, these days the use of modern materials allows us to produce tooth replacement that can no longer be distinguished from natural teeth. As well, the durability of the tooth replacement can be improved significantly.
Zirconium oxide features above average stability: the material has a breaking strength that is three times as high as the one of other ceramics. The material is also referred to as “ceramic steel”; it has been used successfully for many years for the production of automobiles, in aeronautical and space engineering and in orthopaedics where it has been exposed to the highest continuous stress as brake disk, heat shield or artificial hip joint.
In dentistry, zirconium oxide is used for the following applications among other things:
- crowns
- inlays in the frontal and lateral tooth area
- bridges
Brilliant aesthetics
With respect to the optical refraction, brilliance and stability, zirconium oxide strongly resembles the natural hard tooth substance. Light rays hitting the surface of the tooth are transmitted to the adjacent gums as a result of the optical refraction by the ceramic substance. This process makes the gum appear vital and healthy. The benefits of this aesthetic appearance are manly due to the fact that no metal is present which interferes with this optical refraction. Consequently, the tooth harmoniously blends in with the existing other teeth.
Good biocompatibility
Zirconium oxide is especially suitable for patients suffering from intolerances to certain materials and metal. From a dentist’s point of view, this type of metalfree treatment is ideal. The benefits at a glance:
- harmless contents such as oxides of silicon, aluminium sodium and potassium
- very low solubility, high stability against acids
- low plaque accumulation tendency
- no interaction with other materials in the oral cavity
- no chemical decomposition with the formation of toxic decomposition products
In addition, zirconium oxide possesses very high heat insulation properties, allowing the wholehearted enjoyment of cold and hot food.
Tooth replacement with a future
Zirconium oxide ceramics are a tooth replacement with a future. In terms of function and aesthetic appearance, the material closely resembles the natural tooth substance, while perfectly harmonising with the human organism. The lasting treatment success depends on the competent advice, regular prophylaxis and sustained thorough care at the dental practice. If these conditions are met, the prospects for better health, quality of life and daily satisfaction are perfect.
