Are porcelain-fused-to-metal crowns toxic?

Porcelain-fused-to-metal (PFM) crowns, also known as porcelain crowns, are a common dental restoration method mainly made from biocompatible ceramic materials. These materials typically contain no toxic substances and are designed for long-term use without causing harmful effects to the body. However, the quality of PFM crowns depends on the materials used and the manufacturing techniques.

When choosing PFM crowns, it is important to ensure they are provided by qualified dentists and reputable dental laboratories, as inferior quality crowns may contain substandard metal components or fail to meet oral hygiene standards, potentially causing allergic reactions or long-term health issues. Some individuals may be allergic to certain materials, such as nickel-chromium alloys, used in the metal substructure of PFM crowns.

Prior to the placement of PFM crowns, dentists usually perform allergy testing and select suitable materials according to the patient's specific condition, such as all-ceramic or metal-free porcelain crowns. After installation, regular checkups and good oral hygiene practices help ensure the safe and effective use of PFM crowns. If any discomfort or concerns arise, timely consultation with a dentist is recommended.