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Understanding Amalgam Fillings: Should You Consider Replacing Them? Insights from Dr. Zee
· 20/03/2024 · Dental Clinic near to me Dubai
20/03/2024
Amalgam filling replacement is not automatic. A silver amalgam filling that still seals the tooth, feels comfortable, and shows no fracture usually does not need to be replaced, and swapping it for composite purely for looks is rarely worth it. You should consider replacing an amalgam filling when the tooth or the filling is cracked, when food packs around the edges, or when there is decay and discolouration underneath. After 14 years of clinical dentistry, that is the honest answer we give patients in Dubai every week.
Medically reviewed by Dr. Ketki Shah, Specialist Prosthodontist at Mint Dental Care, Dubai.
Silver amalgam fillings were placed far more often 15 years ago than they are today. That shift happened because bonded, tooth-coloured restorations became more predictable and refined over the last decade. Composite has real advantages, yet in the right situation amalgam is still a durable, well-proven material. The question is never “amalgam bad, composite good.” It is whether your specific filling is doing its job.
Do amalgam fillings need to be replaced?
No, a healthy amalgam filling does not need to be replaced just because it is silver. We assess three things before recommending amalgam removal: the integrity of the filling, the integrity of the tooth around it, and whether decay has started underneath. If all three are sound, replacing a well-functioning silver restoration with composite for aesthetic reasons alone is a firm no. Every time a filling is drilled out, healthy tooth structure is lost, so replacement should have a real clinical reason.
When replacement makes sense
- The filling or the surrounding tooth is fractured or chipped.
- Food consistently lodges around the margin, which signals a leaking edge.
- You can see or feel decay, dark staining, or softness under the filling.
- The filling has worn low or the tooth has become sensitive to cold and pressure.
- An X-ray shows a gap or recurrent decay beneath the restoration.
If none of these apply, the safest and most conservative choice is usually to keep the filling under observation and review it at your regular checkups. When one of our clinicians does spot early decay, the same visit that removes the amalgam is often the moment we talk through whether a filling or a small onlay is the better long-term restoration.
Amalgam vs composite: which filling is better?
Neither material wins outright; each is better for a different situation. Composite is the tooth-coloured, minimally invasive choice that most patients now prefer, while amalgam remains the stronger option for large loads in back teeth. Here is how the two compare in the ways that actually matter at the chair.
Composite fillings
Composite is bonded to the tooth chemically, so it grips the surface rather than relying on a mechanical lock. That bond lets us keep the preparation small and preserve more natural tooth. The colour matches enamel, allergies to the material are rare, and you can eat and drink as soon as you leave. The trade-off is technique sensitivity: if the tooth is not kept perfectly dry during bonding, the composite may not adhere, which can lead to sensitivity or a lost filling. Composite has also not yet matched amalgam for raw compressive strength.
Amalgam fillings
Amalgam is undeniably strong and has a track record spanning three to four decades. It tolerates moisture better during placement, which is one reason it lasted so well in deep, hard-to-isolate cavities. The downsides are real too. The silver colour is the most common reason patients ask about changing it, the material contains mercury which raises understandable questions, and it works by mechanical retention, so it needs a depth of roughly 1.5 mm of tooth removal for adequate strength. In the UAE we have gradually phased out placing new amalgam as materials and bonding technology have improved.
If you are weighing your options, our guide on composite fillings for tooth restoration in Dubai walks through where bonded restorations shine, and which type of dental filling is best compares the full range side by side.
What happens during amalgam filling replacement?
Replacing an amalgam filling is a single-visit procedure in most cases. We numb the tooth, use suction and isolation to safely remove the old amalgam, clear any decay underneath, then bond a composite that is shaped and polished to match your bite. Larger cavities that no longer have enough healthy wall left are sometimes better restored with an onlay or crown rather than another direct filling, because that protects the remaining tooth from cracking.
- Local anaesthetic and rubber-dam or high-volume suction isolation.
- Careful removal of the amalgam with copious water cooling.
- Cleaning out any recurrent decay and checking the tooth wall thickness.
- Bonding, layering, and curing the composite.
- Adjusting the bite and polishing so nothing feels high.
When the tooth is heavily broken down, we may recommend stepping up to indirect coverage. You can read more about that path in our overview of dental crowns and bridges, which is the route we take when a filling alone can no longer hold the tooth together.
How much does replacing amalgam fillings cost in Dubai?
The cost depends on the size of the cavity and the restoration chosen. As a general guide in Dubai, a composite filling to replace an amalgam typically ranges from AED 300 to AED 700 per tooth, while an onlay or crown for a badly broken tooth ranges higher. These figures are indicative and need confirmation at your consultation, since the final price reflects how much tooth is left and whether decay has reached the nerve.
Protecting your teeth from the wear and cracking that leads to bigger restorations is worth the effort. Our advice on how to protect your teeth from cracking and breaking covers the daily habits that keep fillings, natural teeth, and future dental work intact, and our explainer on when and why you need dental fillings helps you catch problems early.
Frequently Asked Questions
Are amalgam fillings safe?
Yes. Although amalgam contains mercury in a bound form, major health organisations consider properly placed fillings safe for most patients. The mercury is locked into a stable alloy, and there is no need to remove a sound filling purely out of concern.
Do amalgam fillings need to be replaced?
Only when there is a clinical reason. Replace an amalgam filling if it or the tooth is fractured, if food packs around it, or if decay and discolouration appear underneath. A stable, comfortable filling can stay in place.
Should I replace my old silver fillings for cosmetic reasons?
Cosmetics alone is a weak reason to drill out a healthy filling, because you lose tooth structure each time. If the look genuinely bothers you, we will discuss it, but we will not push replacement of a filling that is working well.
Can I replace amalgam fillings with composite?
Yes, replacing amalgam with composite is a common single-visit treatment. We remove the old filling under isolation, clean the tooth, and bond a tooth-coloured composite. Very large cavities may need an onlay or crown instead for durability.
How long do amalgam fillings last?
Amalgam fillings often last 10 to 15 years and sometimes longer, frequently outlasting composite in heavy-load back teeth. Longevity depends on the size of the filling, your bite, and how well you keep the area clean.
Why do dentists use less amalgam now?
Bonded composite materials have improved dramatically, patients prefer tooth-coloured restorations, and composite needs less drilling. In the UAE these factors together have led clinics to phase out placing new amalgam.
