Why Do Kids Get Silver Teeth — And What Are the Alternatives?
Every week, parents come to me with the same story. Their child went to the dentist, a cavity was found, and they were told the tooth needed a silver filling — or a silver cap. Some parents just nodded along. Others went home with a nagging feeling they couldn’t shake: Is this really the best option for my child?
I’m here to tell you that feeling is worth listening to. And I want to give you the honest, complete picture so you can walk into any dental appointment with confidence.
First, Let’s Clarify What “Silver Teeth” Actually Means
There are two different things parents call “silver teeth,” and they are not the same — and that distinction matters.
The first is an amalgam filling — sometimes called a silver filling or mercury filling. These are placed when decay is limited enough that a filling can restore the tooth. What most parents don’t realize is that these fillings are roughly 50% mercury by weight. The other 50% is a mix of silver, copper, and other metals. Amalgam was developed in the 1800s and was considered a breakthrough at the time — it was durable, relatively inexpensive, and could be placed even when conditions weren’t ideal. For decades, it was the standard of care.
The second is a stainless steel crown — the silver cap that fits over a baby tooth like a thimble. These are recommended when decay has progressed so far that there isn’t enough tooth structure left to hold a filling. Unlike amalgam fillings, stainless steel crowns do not contain mercury. They’re made from a non-reactive metal — the same kind used in cookware and surgical instruments.
I want to be clear about this distinction because conflating the two causes unnecessary confusion. They’re different materials with different concerns. That said, both are metal — and today, in most cases, you don’t have to choose metal.
“I just don’t want to put something in my kids’ bodies that I wouldn’t put in mine.” — This is the question more parents should be asking, and you deserve a clear answer.
The Real Concern with Mercury Fillings in Children
Let’s talk about amalgam specifically, because this is where I have the strongest concerns about using conventional materials in children’s mouths.
Mercury isn’t just sitting inert inside the filling. Research is pointing to continuous release — as your child chews, as temperatures shift between hot and cold foods, and even at rest. This isn’t a brief exposure during placement. It’s ongoing, twenty-four hours a day.
Mercury is particularly concerning for a developing nervous system. A child’s brain is still growing, and research has raised enough questions about mercury exposure during these critical developmental years that many countries have now banned amalgam fillings in children entirely. In the United States, the guidance only recommends against them in pregnant women and children under the age of six — not for all children. Not for teenagers.
That’s not a standard I’m willing to apply here. There is simply no longer a reason to use mercury-containing materials in a child’s mouth when effective alternatives exist.
- Visibly silver — stands out in your child’s smile
- Metal — stainless steel (no mercury, but still metal)
- May contain nickel, a common allergen
- Not the option we recommend when alternatives exist
- 100% metal-free — all porcelain
- White and tooth-colored — blends naturally
- Biocompatible — no metals, no allergens
- Strong, durable, and built to last
What About Stainless Steel Crowns?
Here’s where I want to be especially honest with you, because I believe complete information leads to better decisions.
Stainless steel crowns are a genuinely different matter from amalgam fillings. They don’t contain mercury. Stainless steel is considered an inert, non-reactive metal — the same material used in orthodontic brackets, surgical tools, and many kitchen items. If your child already has a stainless steel crown, that is not the same concern as an amalgam filling.
I tell parents this not to minimize the question of metal in your child’s mouth, but because accurate information is how you make good decisions. When you understand the actual differences, you can ask the right questions and advocate effectively for your child.
And the good news is that even stainless steel crowns usually aren’t necessary anymore.
Metal-Free Alternatives That Actually Work
Here’s what we use at Total Care Kids for metal-free fillings and crowns — and why each option exists:
| Restoration Type | What It Is | Best For | Metal? |
|---|---|---|---|
| Composite resin filling | BPA-free, tooth-colored material bonded directly to the tooth | Small to moderate cavities | None |
| Zirconia crown | All-porcelain cap, white and durable — looks like a natural tooth | Extensive decay, large cavities, teeth needing full coverage | None |
| Inlay / Onlay | Conservative lab-made restoration covering only the damaged area | Moderate decay where a full crown would remove too much healthy tooth | None |
| Stainless steel crown | Metal cap over the tooth | Conventional fallback — we avoid this whenever possible | Yes (no mercury) |
| Amalgam filling | 50% mercury alloy | We do not place these. Period. | Yes + mercury |
A note on composite resin: the main technical challenge is that it requires a very dry field to bond properly — and keeping a wiggly five-year-old still and dry is genuinely harder than working on an adult. This is why some practices default to amalgam. It’s more forgiving in wet conditions. At Total Care Kids, our team has developed the skill to achieve a dry field routinely, even with young children. We do it day in and day out.
One material I should mention specifically: glass ionomer is sometimes offered as a composite alternative. We don’t use it at Total Care Kids. Glass ionomer contains fluoride and continuously releases it into the tooth — and avoiding fluoride in dental materials is important to our practice and to the families we serve.
So Why Does My Dentist Still Recommend Silver?
This is a fair question, and it deserves a straight answer.
Cost is the most honest answer. Metal restorations are less expensive — in materials and in chair time. Composite resin takes more precision and more time to place well. Zirconia crowns cost more than stainless steel. In practices that accept insurance, reimbursement rates often don’t support the higher-cost alternatives, so dentists default to what insurance covers and what their training emphasized.
It’s usually not malicious. Most dentists learned amalgam and stainless steel placement in dental school and haven’t revisited the question since. The research and clinical conversations around biocompatible dentistry have grown significantly in the last decade, but they haven’t reached every practice.
This is exactly why I believe so strongly in educating parents directly. You are your child’s advocate in that chair. Knowing your options changes the conversation.
What to Say at Your Child’s Next Dental Appointment
You don’t need to bring research printouts. You don’t need to argue. You just need to ask:
“I’d prefer no metal at all — no amalgam, no stainless steel. Can we use a composite filling or a zirconia crown instead?”
That’s it. In most cases, a dentist who has the training and materials can accommodate this. If they can’t — or won’t — that’s useful information about whether that practice is the right fit for your family.
One honest caveat: if a space maintainer is ever recommended — a device placed to hold the space open for a permanent tooth when a baby tooth is lost too early — those are typically made from stainless steel, and there isn’t yet a reliable metal-free alternative for every situation. It’s not mercury-containing, and in that specific case it may be the right call for your child’s long-term jaw development. Ask your provider about the specifics before you decide.
The Bottom Line
There is no longer a reason to put mercury-containing fillings in your child’s mouth. That’s not a fringe position — it’s reflected in the policies of countries that have moved ahead of us on this issue, and it’s the standard we hold at Total Care Kids.
Stainless steel crowns are a separate conversation — less concerning, but still avoidable in most cases today.
And the metal-free options we now have — composite resin, zirconia crowns, inlays and onlays — are strong, durable, and look like natural teeth. You don’t have to choose between what’s safe and what works.
If you’re local to American Fork, Utah, we’d love to meet your family. If not, use this information to ask better questions wherever you are — and find a provider who takes those questions seriously.
