Patient FAQ

The evidence is genuinely mixed. Major regulatory bodies including the FDA and WHO have historically considered amalgam safe for most healthy adults at typical exposure levels. However, the FDA updated its guidance in 2020 to recommend alternatives for high-risk groups including pregnant women, children under six, people with kidney disease, and those with mercury allergies. Amalgam does release small amounts of mercury vapor — the debate is whether that level of exposure is clinically meaningful for the average person. We cover the full evidence picture in our Research Library.

The SMART protocol is logically designed to minimize mercury exposure during removal — rubber dams prevent particles from entering the airway, sectioning reduces vapor surface area, and HVE captures what's released at source. These are sensible protective measures with good biological rationale. However, large randomized controlled trials definitively proving long-term clinical benefit versus standard removal in healthy patients don't yet exist. Most practitioners in this space consider SMART best practice, and the precautionary logic is sound. See our detailed SMART vs Traditional comparison.

It depends on why you're removing them. Standard removal for a clinically failing filling (cracked, leaking, decayed underneath) is often covered at 50–80% of the allowable fee. Elective removal of stable, intact amalgam fillings is typically not covered as a separate benefit. The SMART protocol premium is almost never covered. Composite replacement materials are sometimes covered up to the cost equivalent of an amalgam filling — you pay the difference. Always call your insurer before scheduling and request pre-authorization in writing. See our full Insurance Coverage Guide.

Expect to pay roughly $170–$450 per filling for removal plus a tooth-colored replacement using composite resin, depending on your location and provider. The SMART protocol typically adds $50–$150 per filling above standard removal rates. Ceramic replacements (inlays/onlays) are significantly more expensive — $800–$1,800 per tooth. These costs are not typically covered by insurance for elective removal. Use our Cost Calculator for a personalized estimate, or see our cost-by-number-of-fillings table.

This is a personal decision with legitimate arguments on both sides. Arguments for removal: eliminating ongoing low-level mercury vapor exposure, peace of mind, and replacing with modern materials. Arguments for leaving in place: every removal procedure carries temporary increased mercury exposure, removes healthy tooth structure, costs money, and the long-term benefit for healthy adults with stable fillings is not definitively proven. Many practitioners — including biological dentists — recommend leaving stable, intact amalgam in place unless there's a clinical reason to remove it. This is a conversation worth having with a qualified provider who knows your specific situation.

SMART stands for Safe Mercury Amalgam Removal Technique. It's a set of protective procedures developed by the International Academy of Oral Medicine and Toxicology (IAOMT) to minimize mercury exposure during amalgam removal for patients, dental staff, and the environment. The five core elements are: rubber dam isolation, sectioning (chunking) the filling instead of grinding, high-volume evacuation (HVE) directly at the tooth, copious water cooling, and HEPA air filtration in the treatment room. Not all dentists who describe themselves as 'mercury-free' use SMART procedures — ask specifically. Read our full SMART Protocol guide.

Mercury-free means a dental practice no longer places new amalgam fillings. Mercury-safe means a practice uses protective protocols — like SMART — to minimize mercury exposure when removing existing amalgam fillings. These are completely different things. A dentist can be mercury-free (doesn't place new amalgam) but still grind out old fillings without a rubber dam or HVE — which is not mercury-safe. When evaluating a provider for amalgam removal, ask specifically about their removal protocol, not just whether they're 'mercury-free.' See our full comparison guide.

A typical SMART removal appointment follows this sequence: you arrive, complete paperwork, and are seated in the chair. The team places protective covering on your clothing and skin. The rubber dam is positioned and sealed around the tooth. High-volume evacuation suction is set up adjacent to the tooth. The dentist sections the amalgam into chunks and lifts them out, rather than grinding. The area is thoroughly rinsed and suctioned. The replacement material (composite or other) is placed. The rubber dam is removed, your bite is checked, and you're given post-procedure instructions. Total time per filling is typically 45–90 minutes. Read our full step-by-step walkthrough.

Start with our Provider Directory, which lists dentists who have disclosed their safety practices and received a Mercury Safety Score™. When evaluating any provider, ask: Do they use a rubber dam for amalgam removal? Do they section the filling or grind it? Do they have HVE (not just a saliva ejector)? Is there air filtration in the treatment room? Are they IAOMT-trained? The IAOMT also maintains a searchable member directory at iaomt.org. Use our 20-question checklist to evaluate any provider you're considering.

Most patients feel normal within a few hours of a straightforward composite replacement. Some sensitivity to temperature is common for several days to a few weeks — this usually resolves on its own. Avoid very hard or crunchy foods for 24 hours after composite placement while the material fully cures. Avoid whitening products near treated teeth for 2 weeks. Contact your dentist if sensitivity is severe or worsening after a week, if your bite feels uneven, or if you notice any swelling. Our full Recovery Guide covers what's normal and what warrants a call.

The Mercury Safety Score™ is an educational comparison tool we developed to help patients quickly understand how a dental provider's disclosed safety practices compare to SMART protocol standards. Scores range from 1–10 and are calculated based on verified or self-reported practice information across five categories: rubber dam use, evacuation technique, air filtration, patient oxygen supply, and patient education practices. A higher score does not guarantee better clinical outcomes — it reflects how many SMART protocol elements a provider has disclosed. All scores are self-reported unless otherwise noted and are not a certification or quality guarantee. Read more in our Score Explainer.

Yes — several. Composite resin is the most common: tooth-colored, bonds directly to the tooth, placed in one visit, and costs less than ceramic options. Ceramic (porcelain) restorations — inlays, onlays, or crowns — are more durable and aesthetically excellent but require lab fabrication and 2+ visits, at higher cost. Glass ionomer is occasionally used for specific applications and releases fluoride. Gold alloys are extremely durable but rarely chosen due to aesthetics and cost. The right choice depends on the tooth location, size of the restoration needed, your budget, and your dentist's clinical judgment. Our Compare Hub has detailed material comparisons.