PFM VS Zirconia: Which Material is Better?

When comparing Porcelain-Fused-to-Metal (PFM) and Zirconia for dental restorations, there are several factors to consider, including strength, aesthetics, cost, and biocompatibility. Here’s a breakdown of both materials:

1. Aesthetics:

  • PFM: PFM restorations have a metal substructure covered by a porcelain layer. While the porcelain mimics the color of natural teeth, the metal underneath can sometimes cause a greyish tint, especially at the gumline over time.
  • Zirconia: Zirconia is an all-ceramic material with a white, tooth-like appearance, offering superior aesthetics without the risk of a metal shadow. It’s more translucent and mimics natural teeth better.

2. Strength:

  • PFM: The metal substructure in PFM provides high strength and durability, making it suitable for crowns in the back of the mouth where forces are stronger.
  • Zirconia: Zirconia is extremely strong, even more so than PFM in some cases. Its strength is comparable to metals, and it can withstand high chewing forces, making it an excellent choice for posterior teeth as well.

3. Longevity and Wear:

  • PFM: PFM crowns can last many years, but the porcelain layer can wear down or chip over time, especially if the bite is misaligned or if the patient grinds their teeth.
  • Zirconia: Zirconia is highly resistant to wear and chipping, making it more durable in the long term. It has excellent longevity and can withstand the forces from bruxism (teeth grinding).

4. Biocompatibility:

  • PFM: Some patients may experience allergic reactions to the metal alloys used in PFM crowns. Additionally, the metal can cause irritation to the gums or create a dark line at the gumline over time.
  • Zirconia: Zirconia is biocompatible, meaning it does not cause allergic reactions or irritation. It integrates well with the body and is particularly suitable for patients with metal allergies.

5. Cost:

  • PFM: PFM crowns are generally less expensive than Zirconia, but the cost can vary depending on the metal used (precious or non-precious alloys).
  • Zirconia: Zirconia crowns tend to be more expensive due to the advanced technology required for fabrication and their superior properties.

6. Marginal Fit:

  • PFM: PFM restorations can provide a precise fit, but the thickness of the metal and porcelain layers can sometimes make it challenging to achieve the best results in very tight spaces.
  • Zirconia: Zirconia crowns are milled from a single block, offering excellent precision in fit. Digital CAD/CAM technology used in Zirconia restorations also enhances accuracy.

7. Usage:

  • PFM: PFM crowns have been used for decades and are still considered a reliable option for both anterior and posterior teeth. However, due to aesthetic limitations, they are often less favored for highly visible front teeth.
  • Zirconia: Zirconia is a versatile material that can be used for both anterior and posterior teeth. It’s particularly popular for full-mouth restorations and for patients who desire a more natural look.

Which is better?

  • Aesthetics & Biocompatibility: Zirconia is generally preferred for patients who prioritize aesthetics and biocompatibility.
  • Strength & Longevity: Both materials are strong, but Zirconia tends to have better long-term wear resistance and durability.
  • Cost-Effectiveness: PFM may be a better option if cost is a major concern, but keep in mind that Zirconia’s long-term durability may make it more cost-effective over time.

Ultimately, the choice depends on individual needs, preferences, and the specific case. Your dentist can recommend the best material based on your oral health, location of the tooth, and aesthetic goals.

Aizir Zirconia:

Aizir Zirconia represents Aidite’s most advanced R&D and production lever integrating several patented technologies in one disc, meanwhile meeting the full range of indications. It has larger systematic processing, a wider sintering temperature range, and an increased stable three-dimensional gradient effect. It is certified by the Province of British Columbia. MedicaFast Inc. is the authorized agent in Canada, if you need Aizir zirconia products, please contact us.

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