Replacing Old Silver (Amalgam) Fillings in Colombia: When It Makes Sense and When It Doesn't

Many adults who grew up in the US or Canada still have silver fillings from decades ago. When you're planning a dental trip to Colombia for something else, it's tempting to "clean house" and swap them all out while you're there. Sometimes that's sensible. Often it isn't. The honest answer depends on the condition of each filling, not on the material alone.

This guide explains what U.S. regulators actually say about amalgam, the clinical reasons a dentist might recommend replacing a filling, and how to evaluate a Colombian treatment plan that includes amalgam removal. It's general education; your dentist's exam and X-rays decide what applies to you.

What amalgam is, and what the FDA says

Dental amalgam, the "silver filling," is a mix of metals that includes mercury bound with silver, tin and copper. It has been used for well over a century because it's durable and forgiving to place.

In September 2020, the U.S. Food and Drug Administration updated its recommendations. Two points matter for travelers:

• Existing fillings: The FDA does not recommend removing or replacing amalgam fillings that are in good condition unless it's medically necessary. Removing intact fillings can temporarily increase mercury vapor exposure and remove healthy tooth structure.
• Higher-risk groups: For new fillings, the FDA recommended that certain groups avoid amalgam when possible and appropriate. These include pregnant women and those planning pregnancy, nursing women, children (especially under six), people with pre-existing neurological diseases, people with impaired kidney function, and people with a known sensitivity to mercury or other amalgam components.

In other words, the guidance is mostly about what to place next, not a reason to drill out fillings that are doing their job.

Good reasons to replace a filling

Dentists replace fillings, of any material, for clinical reasons. These are the ones you should see documented in your plan:

Cosmetic preference can also be a legitimate reason, for example a visible filling in a smile-zone premolar, as long as you understand the trade-off: some healthy tooth may be lost in the process.

Reasons that deserve a second look

Be more cautious when the justification is:

• "All your silver fillings should go" with no tooth-by-tooth findings.
• Broad health claims, such as removal curing fatigue or other symptoms. U.S. regulators have not endorsed removal of intact fillings for general health reasons.
• "While you're here" bundling that adds many replacements to a trip planned for something else, without X-rays showing a problem.

None of this means the clinic is acting in bad faith. It means you should ask for the evidence behind each line item. Our article on treatment plan red flags covers the broader pattern.

Replacement options

When a filling does need replacing, the right material depends on how much tooth is left, where it is, and how you bite.

Composite (tooth-colored resin)

Bonded directly to the tooth in one visit. Good for small and moderate fillings. Very large composites in back teeth can be more technique-sensitive and may wear faster under heavy biting.

Glass ionomer

Another tooth-colored option named by the FDA as an alternative. Often used in specific situations, such as near the gumline. Generally less wear-resistant on chewing surfaces.

Inlays, onlays and crowns

When an old amalgam was large, there may not be enough tooth left for a direct filling. A lab-made or milled inlay or onlay replaces the missing part while preserving more tooth than a crown. See our guide to inlays and onlays in Colombia and the comparison of onlay versus crown after a large filling.

How removal is done

When amalgam is removed, many dentists use precautions to reduce exposure to particles and vapor, such as high-volume suction, water cooling and isolation (for example a rubber dam). Protocols vary between practices. It's reasonable to ask what the clinic does and why.

• Will you use a rubber dam or other isolation during removal?
• What suction and cooling do you use?
• How many fillings would you remove in one appointment, and why?
• What will you place instead in each tooth, and what's the reason for that material?
• If a tooth turns out to need more than a filling once the old one is out, how will you tell me and change the quote?

Fitting replacements into a Colombia trip

Filling replacement is usually straightforward to schedule, but it interacts with other work:

1. Send current X-rays first. Bitewings and, if available, a full-mouth series. Many clinics will flag which fillings look problematic from records. See X-rays and CT scans for treatment planning.
2. Prioritize by findings. Ask the dentist to rank teeth: needs replacement now, monitor, leave alone.
3. Sequence with cosmetic work. If you're also getting whitening or veneers, ask about order. Composite color is usually matched to your teeth after any whitening.
4. Allow for onlays. Lab-made restorations may need an extra day or two unless the clinic mills in-house.
5. Get records home. Ask for a chart listing each tooth treated, the material used, and post-treatment X-rays.

If you want an independent read before traveling, you can send us your X-rays and current plan and we'll share them with vetted Colombian dentists for a tooth-by-tooth opinion.

What to expect after replacement

Most people go back to normal eating the same day after composite fillings, once any numbness wears off. A few things are common and worth knowing before you fly home.

• Temporary sensitivity. Teeth that had large old fillings may be sensitive to cold or biting for a while after replacement. Mild sensitivity that steadily improves is common; sensitivity that gets worse, or pain that lingers after a cold drink, should be reported to the dentist.
• A "high" bite. If a new filling feels tall when you bite, tell the dentist before you leave. A quick adjustment is easy in the chair and much more awkward from home.
• Color settling. Composite is matched to your current tooth shade. If you whiten later, fillings won't change color, which is why sequencing matters.

Ask the clinic how long to wait before a flight after any treatment that needed significant drilling or anesthesia, and what to do if a tooth flares up after you're home. A dentist at home can usually manage a sensitive tooth, but they'll need to know exactly what was done, so keep the clinic's chart and X-rays handy.

The bottom line

Old silver fillings aren't automatically a problem, and replacing intact ones carries its own costs. Replace fillings that have clinical reasons to go, choose the replacement material for the tooth in front of you, and expect a good clinic to show you its evidence. If a plan proposes replacing everything, ask to see the findings for each tooth before you agree.

Frequently asked questions

Should I have all my silver fillings removed?

Not automatically. The U.S. FDA does not recommend removing amalgam fillings in good condition unless medically necessary, since removal can increase short-term mercury vapor exposure and cost healthy tooth. Replace fillings with documented problems.

Who should avoid new amalgam fillings?

In 2020 the FDA recommended certain higher-risk groups avoid new amalgam when possible, including pregnant or nursing women, women planning pregnancy, young children, people with some neurological diseases or impaired kidney function, and people with a known sensitivity to its components.

What replaces an old amalgam filling?

Usually composite resin or glass ionomer for smaller fillings, and an inlay, onlay or crown when much of the tooth is missing. The right choice depends on the tooth and your bite.

Can old fillings be replaced in one visit?

Several can, depending on the number and size. Lab-made onlays or crowns may need extra days. Ask the clinic how they'd sequence your teeth.