Florida’s Surgeon General, Dr. Joseph Ladapo, recently issued a recommendation against the routine use of dental amalgam, reigniting an ongoing conversation in the profession about the safety and future of mercury-based restorations. The guidance stands in contrast to current positions held by the FDA and the ADA, which maintain that amalgam is safe for most patients. But recent scientific findings, international policy developments, and changing public attitudes may be accelerating the material’s decline, whether the regulatory consensus follows or not.
This week, Dentistry 411 lays out what you need to know now about this important update and how this could impact decision-making in your dental practice.
Mercury Exposure Concerns Are Mounting
The core of Ladapo’s guidance is a precautionary stance rooted in evolving toxicology data. While elemental mercury in amalgam is tightly bound, it still emits low levels of mercury vapor, especially during placement and removal. Some studies have suggested links of mercury vapor exposure to elevated blood and urine mercury levels, DNA damage in blood cells, kidney accumulation, and possible neurodevelopmental effects in children.
The FDA and ADA continue to support amalgam’s use in the general population, but both have acknowledged increased risks in high-risk groups: children under six, pregnant women, nursing mothers, individuals with neurological or kidney conditions, and those allergic to metals commonly found in amalgam. These agencies also caution against removing intact restorations unless medically necessary, due to the spike in vapor release during the removal process.
Alternatives Are Becoming Preferred
The reality in most modern practices is that amalgam is rarely used. Utilization in the U.S. dropped from nearly 22% of restorations in 2017 to just over 4% in 2023. Patient demand, improvements in resin composites, and a growing comfort among practitioners with newer materials have made the shift relatively seamless.
Ladapo’s advisory highlights the availability of alternatives, such as resin composites, glass ionomers, stainless steel crowns for pediatric use, and ceramics. Each of these options brings its own handling characteristics, cost implications, and clinical indications. But from an esthetic and safety standpoint, they are widely preferred by patients and increasingly by public health officials. The advisory may also push public health programs and Medicaid toward stronger support for mercury-free alternatives.
The Global Context
The FDA’s cautious endorsement of amalgam stands in contrast to international efforts to curb its use. Over 130 countries have signed on to amendments under the Minamata Convention on Mercury, committing to phasing down (and in some cases, phasing out) dental amalgam, especially among vulnerable groups.
While it could be seen as regulatory posturing, the trend is being reflected in procurement guidelines, dental school curricula, and insurance reimbursement policies in countries across Europe and Asia. The U.S. is not formally phasing out amalgam at the federal level, but momentum from states like California and now Florida could shift that balance.
Practical Takeaways for Your Practice
Here are a few things to consider as you navigate this evolving conversation around amalgam use:
- Reassess Material Choices
If you’re still using amalgam in select cases, review whether current alternatives can meet your clinical goals without compromising durability or budget. For many clinicians, composites and glass ionomers now offer predictable, lasting results with less controversy.
- Update Patient Communication
Be prepared to discuss amalgam safety with better-informed patients. Consider preemptively updating consent forms, patient education materials, and website content to reflect your current stance.
- Avoid Unnecessary Removals
While public concern may rise, emphasize that intact amalgam fillings should not be removed unless medically necessary. Removal poses greater mercury exposure risk than the filling itself.
- Stay Aligned with Ethical Guidelines
The ADA maintains that replacing amalgam solely for cosmetic or mercury-related concerns violates ADA ethical principles if the existing amalgam restoration is clinically serviceable.. Ensure your recommendations are defensible and evidence-based.
- Monitor State-Level Policy Changes
Florida’s guidance isn’t law, but it may influence Medicaid policy, dental board actions, or patient expectations. Other states could soon follow suit, especially if public pressure mounts or new data emerges.
The Bottom Line
While amalgam has been a workhorse for over a century, its time as a default restorative material is on a downswing. Whether due to patient preference, policy shifts, or evolving research on mercury toxicity, amalgam’s utility is narrowing. For most dentists, this is a call to double down on mastery of alternative materials. Amalgam won’t go obsolete overnight, but because its risk-benefit calculus is no longer universally favorable, it’s only smart to be prepared.
SOURCES: WUSF, Florida Department of Health, ADA, FDA, Becker’s Dental Review
Disclaimer:
The content provided in this article is for informational and educational purposes only and is not intended as legal advice. Nothing in this article should be interpreted as creating an attorney-client relationship. Readers should consult with a qualified attorney or legal professional for advice specific to their individual circumstances or any legal matters related to malpractice, liability, or risk management.
