What is Zirconia Porcelain Dental Crowns?

Zirconia porcelain crowns are a type of dental restoration that utilizes zirconium as the underlying support material for porcelain crowns. While porcelain crowns supported by metal frameworks have been widely used due to their superior mechanical properties, disadvantages such as metal visibility at the gum line, wear over time, and lack of light transmission in the anterior region have made them less aesthetically pleasing. Zirconium, with its fine grain structure, high tensile strength, and aesthetic qualities, has become a popular choice in dentistry for porcelain materials. This material is highly resistant to temperature changes and wear.

How is Zirconia Crowning Done?

The zirconia crowning process is performed by dentists and consists of several steps:

• Preparation: The dentist identifies the issues with the tooth and administers local anesthesia to minimize sensitivity in the area.
• Reduction: The tooth is appropriately reduced in size, and impressions are taken. The color of the crowns is determined based on the patient's preference.
• Temporary Crowns: Temporary crowns are placed until the zirconia crowns are ready.
• Placement: The zirconia crowns, prepared within 3-5 days, are permanently bonded to the tooth after the patient's approval.

Characteristics of Zirconia Crowns

Zirconia crowns offer numerous advantages in terms of both durability and aesthetics:

• Durability: Thanks to specialized firing processes, zirconia crowns are extremely strong.
• Aesthetics: They have a light-transmitting structure similar to natural enamel, giving them a natural white appearance.
• Health: They do not contain metal, making them compatible with gum tissue and promoting gum health.
• Longevity: With proper care, they can last for many years.
• Sensitivity: Due to their low thermal conductivity, they do not cause sensitivity to hot or cold stimuli.
• Allergy Prevention: They prevent allergic reactions that may arise from metal components.
• Reduction of Bad Breath: They help minimize bad breath and do not leave dark stains on the gums.
• Plaque Buildup Prevention: Their smooth and shiny surface helps reduce plaque accumulation.

Differences Between Zirconia Crowns and Other Types of Crowns

• Zirconia Crowns vs. Laminate Crowns: Zirconia crowns cover the entire tooth, while laminate crowns are applied only to the front surface with minimal tooth reduction.
• Zirconia Crowns vs. Metal Crowns: Zirconia crowns have zirconium beneath the porcelain, whereas metal crowns have a metal base. Zirconia crowns provide a more natural appearance, while metal crowns may cause gum discoloration.

Frequently Asked Questions About Zirconia Crowns

Do zirconia crowns yellow over time?
With proper care, they do not discolor. However, if they do become yellow for any reason, they can be whitened at a dental clinic.

What foods should people with zirconia crowns avoid?
They should avoid hard-shelled foods, sticky foods, and acidic substances.

Can zirconia crowns be placed on implants?
Yes, zirconia crowns can be used on implants, especially for prosthetics in the anterior region.

If a zirconia crown needs to be removed, will it damage the natural tooth underneath?
Zirconia crowns can be removed without harming the underlying natural tooth as they are cut off.

For more information about zirconia crowns, consult your dentist.