How long do dental fillings last?

Explore what affects a filling’s lifespan and how precise placement helps them last for years.
September 18, 2025
How long do dental fillings last?

Dental fillings are one of the most common and effective treatments in dentistry. They play a crucial role in restoring damaged teeth, stopping decay, and protecting your smile for years to come. Still, one of the most frequent questions patients ask is, “How long do dental fillings actually last?”

The short answer is that with the right materials, proper placement, and consistent care, dental fillings can last many years, often a decade or longer. At Harmony Family Dentistry in Carson City, Dr. Vedran and Dr. Justine Dupanovic use high-quality materials and precise techniques to ensure every restoration is strong, comfortable, and built to last.

Let’s take a closer look at why fillings are needed, how the procedure works, and what determines their lifespan.

Why dental fillings are needed

Tooth decay is one of the most common oral health problems worldwide. It begins when bacteria in the mouth produce acids that erode enamel, leading to small cavities. If left untreated, decay can reach deeper layers of the tooth, causing pain, infection, and even tooth loss.

Dental fillings repair this damage by sealing the cavity and restoring the tooth’s normal shape and function. They prevent further decay, reinforce the structure, and stop bacteria from re-entering. In addition to treating cavities, fillings can also repair minor chips, cracks, and worn areas caused by grinding or injury.

At Harmony Family Dentistry, each filling is tailored to match the tooth’s color and contour, ensuring it blends seamlessly with the surrounding enamel while restoring strength.

How dental fillings are done

Modern fillings are quick, painless, and precise. Here’s what you can expect during the procedure:

  1. Examination and diagnosis
    The dentist first examines the tooth and takes digital X-rays to assess the extent of decay or damage. This step helps determine whether a filling or another treatment is needed.

  2. Anesthesia and preparation
    Local anesthesia is applied to numb the area, ensuring complete comfort throughout the procedure. The dentist then gently removes the decayed portion of the tooth using precise instruments.

  3. Cleaning and shaping
    Once the decay is removed, the cavity is thoroughly cleaned to eliminate bacteria and debris. The tooth is then shaped to allow for a snug, secure filling.

  4. Filling placement
    The chosen filling material,often composite resin, is applied in layers. Each layer is cured with a special light to harden it instantly.

  5. Shaping and polishing
    After the filling is fully set, the dentist shapes it to match your bite and polishes the surface so it looks and feels completely natural.

The entire process usually takes less than an hour and is completely pain-free thanks to modern anesthesia and gentle techniques.

Types of dental fillings and how they differ

The lifespan of a filling depends in part on the material used. Here are the most common types and what makes them different:

  • Composite resin fillings
    These tooth-colored fillings are made from a blend of plastic and glass particles. They bond directly to the enamel, creating a strong, natural-looking restoration. Composite fillings typically last between 7 and 10 years, though many last longer with proper care.

  • Amalgam fillings
    Made from a mixture of metals including silver, tin, and mercury, amalgam fillings are very durable and often used for back teeth where chewing pressure is greatest. They can last 10 to 15 years or more but are less popular today due to their metallic appearance.

  • Ceramic fillings
    Also known as porcelain fillings, these are highly aesthetic and resistant to staining. They can last up to 15 years and are an excellent choice for visible teeth.

  • Gold fillings
    Though less common now, gold fillings are extremely durable and can last more than 20 years. They are, however, more expensive and noticeable.

At Harmony Family Dentistry, the focus is on high-quality composite and ceramic fillings that provide both beauty and strength.

How long dental fillings last

The average lifespan of a filling depends on several factors, including the material, the tooth’s location, and the patient’s oral habits. Composite fillings last an average of 7 to 12 years, while ceramic and gold fillings can last up to 15 or even 20 years.

However, the true difference comes down to how well the filling was placed and how well the patient maintains it afterward. A well-done filling, such as those placed at Harmony Family Dentistry, can easily last well beyond its expected lifespan.

Dr. Vedran and Dr. Justine use advanced bonding techniques and high-grade materials that resist wear, prevent leakage, and maintain their seal over time. They also ensure that each filling fits perfectly with your natural bite, reducing stress that could cause premature failure.

How to make your fillings last longer

Even the most durable filling needs good care to stay in great shape. Here are a few ways to extend their lifespan:

  • Brush twice daily with fluoride toothpaste to prevent new decay.

  • Floss regularly to remove plaque and food particles between teeth.

  • Visit your dentist every six months for exams and professional cleanings.

  • Avoid biting down on hard foods or objects like ice or pens.

  • Limit sugary snacks and drinks that can erode enamel.

  • Wear a nightguard if you grind your teeth while sleeping.

With these habits, many patients keep their fillings in excellent condition for well over a decade. To understand why preventive visits matter, read our blog on the importance of regular dental checkups.

When a filling needs replacement

Over time, fillings can wear down, crack, or leak at the edges, allowing bacteria to enter. You may need a replacement if you notice:

  • Sensitivity to hot, cold, or sweet foods

  • Roughness when running your tongue over the tooth

  • Pain when biting or chewing

  • Visible chips or discoloration in the filling

During routine checkups, the dentists at Harmony Family Dentistry carefully examine all existing restorations. Early detection of a worn or failing filling prevents larger problems such as fractures or reinfection.

Are dental fillings painful

Thanks to modern anesthesia and advanced techniques, fillings today are completely painless. The area around the tooth is numbed before any work begins, so you’ll feel no pain, only mild pressure. Afterward, some minor sensitivity is normal for a day or two, but it quickly subsides.

At Harmony Family Dentistry, gentle care is the standard. The dentists take extra time to ensure every patient feels comfortable and informed throughout the procedure.

Why quality matters in dental fillings

Not all fillings are the same. The precision of placement, type of material, and quality of the bonding process all impact how long a filling lasts. At Harmony Family Dentistry, every filling is crafted to exact detail, ensuring a tight seal and a smooth, natural finish.

Using advanced digital imaging and conservative techniques, the dentists preserve as much of your natural tooth structure as possible while fully removing decay. This approach promotes stronger, longer-lasting results that protect your smile for years.

Visit Harmony Family Dentistry in Carson City

If you’re experiencing tooth sensitivity, pain, or an old filling that feels rough, it might be time for a replacement. At Harmony Family Dentistry, every restoration is done with precision, comfort, and longevity in mind.  Check out our blog on why Harmony is the best family dentistry you can choose in Carson city, NV.

The office is conveniently located near Roop & Stewart Bus Stop (short walk), Frontier Plaza with Raley’s Supermarket, CVS Pharmacy, and Subway (2-min drive), and Winnie Lane Center with San Marcos Grill, McDonald’s, and Denny’s (2-min drive).

Book a free consultation

Harmony Family Dentistry offers free consultations for patients who need new fillings or want to check the condition of their existing restorations. During your visit, the team will assess your oral health, discuss the best materials for your needs, and provide a treatment plan focused on long-term durability.

Final thoughts

Dental fillings, when placed with skill and maintained properly, can last many years and protect your smile from further decay. With high-quality materials, careful craftsmanship, and ongoing care, patients at Harmony Family Dentistry enjoy restorations that look natural, feel comfortable, and stand the test of time.