One of the most common questions we hear in our Columbus office goes something like this: “I’ve had this filling for years. How do I know when it needs to be replaced?” It’s a fair question. Fillings don’t come with an expiration date. They wear down slowly, and most people don’t notice the changes happening over time. But ignoring an aging filling can lead to bigger problems down the road.
So let’s talk about what affects a filling’s lifespan, what signs to watch for, and when it’s time to come see us.
Average Lifespan
Most fillings last somewhere between five and fifteen years. That’s a wide range, we know. The truth is, how long a filling lasts depends on several factors. The material used. Where it’s located in your mouth. How well you take care of it. And yes, a bit of luck plays a role too.
Different Materials, Different Lifespans
Not all fillings are created equal. The material matters.
- Amalgam fillings are the silver ones. They’ve been used for over a century. They’re strong and affordable, and they typically last ten to fifteen years or longer. Some patients have had them for decades. The downside is that they don’t look natural, and they can expand and contract with temperature changes, which can eventually damage the surrounding tooth.
- Composite fillings are tooth-colored. They blend in beautifully and bond directly to the tooth structure. On average, they last about five to ten years. They’re more prone to wear and staining than amalgam, especially in back teeth where chewing forces are strongest.
- Gold fillings are less common these days, but they’re incredibly durable. Fifteen to twenty years is realistic. The trade-off is cost and appearance.
- Ceramic fillings are another tooth-colored option. They resist staining better than composite, but they can be brittle. Ten to fifteen years is typical.
Location Matters More Than You Think
A filling on a front tooth doesn’t face the same forces as one on a molar. Front teeth mostly bite and tear. Back teeth grind and crush. That pressure takes a toll. Fillings in molars and premolars wear down faster, especially if you grind your teeth at night.
We also see fillings fail more often near the gumline. That area is harder to keep clean, and saliva and bacteria tend to pool there. A filling that sits right at the gumline is more likely to develop decay around its edges over time.
What Shortens a Filling’s Life
A few habits speed up the wear-and-tear process:
- Grinding or clenching your teeth: This puts constant pressure on fillings. Over time, they can crack or loosen. A nightguard helps protect them.
- Chewing ice, hard candy, or pens: These can fracture fillings, especially composite ones.
- Poor brushing and flossing: Decay can sneak in around the edges of a filling. Once that happens, we need to remove the filling so we can treat the new cavity.
- Waiting too long between checkups: We can often spot a failing filling before it causes pain. Once it hurts, the problem is usually bigger.
Signs a Filling Needs Attention
Here’s what we tell patients to watch for:
- A sharp edge or rough spot you can feel with your tongue
- Pain when biting down
- Sensitivity to hot or cold that wasn’t there before
- A visible crack or dark line around the filling
- Food getting stuck in a spot that used to be smooth
If any of those sound familiar, call us. We’d rather look at it now than wait until it becomes an emergency.
What Happens When We Replace a Filling?
It’s usually a simple appointment. We numb the area, remove the old filling, clean out any decay underneath, and place a new one. Most replacements take less than an hour.
Sometimes we find that the tooth needs more than a filling. If the decay is extensive or the tooth is fractured, a dental crown might be the better option. We’ll always explain what we find and walk you through your choices before doing anything.
Restore Your Bite Today
Fillings don’t last forever. But with good care and regular checkups, most last for many years. The key is catching problems early. If you’re not sure how old your fillings are or whether they’re holding up, come in for a visit. We’ll take a look, answer your questions, and help you plan ahead.
Wondering about your fillings? Call our Columbus office at 706-407-4851 or schedule an appointment online. We’re happy to take a look.