The Risks of Dental Amalgam and the Forefront of Metal-Free Treatment: What You Need to Know to Avoid Leaving "Silver Fillings Containing Mercury" Untreated

Amalgam, commonly known as silver fillings, has been used in dental treatments for many years. It is an alloy containing about 50% mercury, and studies both domestically and internationally have confirmed that it continues to release trace amounts of mercury vapor even decades after filling. Chronic mercury exposure poses multifaceted health risks, including neurological disorders, weakened immunity, effects on fetuses, and metal allergies. In response to recommendations from the WHO and the Minamata Convention, countries worldwide are accelerating the phased-out replacement of amalgam. The EU plans to completely ban the use and export of dental amalgam by 2025. In Japan, the manufacturing and import of amalgam effectively ceased in 2007, and the 2024 revision significantly expanded insurance coverage for metal-free materials such as composite resin, PEEK, and CAD/CAM crowns. This article explains the history, toxicity, and regulatory trends of amalgam, safe removal procedures and costs based on Japan's insurance system, and metal-free treatments. It also provides a checklist to help patients make informed decisions without regret. Furthermore, it covers detox nutrition management after removal, the use of metal allergy tests, and tips on smartly reducing costs through municipal subsidies and medical expense deductions. By reading this article, you will gain a clear action plan to protect your oral and overall health while achieving beautiful, long-lasting white teeth.