What are the disadvantages of Zirconia Crowns?

Posted by scott1 on September 28th, 2018

What is Zirconia?

Zirconia is preferred to use in the back teeth. What distinguishes the Zircon crowns that it needs less cold metal lining and it is manufactured using a computer called the CAD CAM.

The Zirconia is used in the back teeth with confidence, whether it is a bridge or crowns. Its rigidity is higher but its beauty is less than the imax from the epileptic side. Therefore, when shooting in television shows or under ultraviolet light in nightclubs, the tooth of industrial installation will appear! But in normal life no one will notice him.

Zirconia is mainly a precious metal. It is used in jewels Zirconia is a composite component of the Zr Si O4 classification. It is discovered in 1789 by the scientist (MHKlaproth), where Zr O2 is derived from the elements of zirconium found in Nature, which is molecularly stable by etherium.

Fillings made of precious Zirconia:

In recent years, there have been a growing number of concerns about the use of lead fillings that is called Amalgam. The problem is that the lead fill contains mercury. Some believe that mercury is a harmful and toxic substance and that it causes many diseases such as memory loss and autism beyond its non-aesthetic appearance, which comes from its radiant color except that these fillings cannot be used in the front teeth.

Disadvantages of Zirconia Crowns

1 - Toxic to the teeth, as it contains the substance of phosphorus, which leaks into the pulp of the teeth in many cases, causing the damage of the pulp and then the emergence of cysts and lesions of zeroes

2. Life expectancy: Less than five years.

3. Their ability is less likely: Under chewing pressure, the white filling can be broken more quickly, especially at the pressure areas of the posterior teeth.

4. White fillers cannot be used to treat large caries, especially in the back teeth.

5. Color change: The color of the white filling can change over time or the color of its edges may change

6. Zirconia itself is an inert substance and no sensitization or oral infections are associated with its use. However, this does not mean that there are no damages associated with design and manufacturing errors, such as the work of the crowns of the teeth with prominent areas of the gums, causing accumulation of plaque and food residues. Teeth, as well as for short (open) or over-pressing edges. In addition, ZirconiaCrowns can cause long-term erosion of the opposite tooth as a result of chewing; it is very hard, especially if the structure surface is not sufficiently thick.

"This does not mean that there is a better dental implant than any other. All the materials are internationally recognized and suitably appropriate, but each has its specific use. Finally, the selection of the composition material is linked to the patient's special situation. , Such as the number of missing teeth, the likelihood of allergies, cosmetic considerations and the material cost.