If you have a cavity that needs filling, or an old filling you are thinking about replacing, you may be wondering which type is right for you. For decades, silver fillings were the standard. Today, tooth colored composite fillings have become the preferred choice for most patients. So what actually sets them apart, and does it matter which one you choose? As an experienced dentist in North Andover, MA, Dr. Gary C. Demetriou helps patients understand their options so they can make a confident, informed decision.
What are the two types of fillings?
A filling repairs a tooth that has been damaged by decay, restoring its shape and function. The two main materials are:
- Silver fillings, also called amalgam, which are made from a mix of metals including silver, tin, copper, and mercury
- Composite fillings, also called tooth colored or white fillings, which are made from a blend of resin and fine glass particles
Both restore a tooth after decay is removed. The difference lies in how they look, how they bond to the tooth, and how much healthy tooth structure needs to be removed to place them.
How do they compare on appearance?
This is the most obvious difference. Silver fillings are dark and metallic, which makes them stand out, especially on the lower teeth or when you laugh. Composite fillings are matched to the exact shade of your natural teeth, so they blend in and are essentially invisible.
For any tooth that shows when you smile, composite is the clear winner on appearance. Many patients who once had noticeable silver fillings choose to replace them simply for a more natural looking smile.
Which is stronger and longer lasting?
Silver fillings have a long track record and are very durable under heavy chewing pressure, which is why they were used for so many years. However, they have some real drawbacks. Metal expands and contracts with temperature changes from hot and cold foods, and over time this can create cracks in the tooth or cause the filling to pull away from the edges, letting new decay sneak in underneath.
Composite fillings bond directly to the tooth, which actually helps support and strengthen the remaining structure. Modern composite materials are strong and hold up well to everyday biting and chewing. They also require less drilling, because the dentist does not need to remove as much healthy tooth to hold the filling in place. You can learn more about the practice’s approach on the fillings and restorations page.
Are silver fillings safe?
This is a question many patients ask, largely because silver fillings contain mercury. According to the American Dental Association, amalgam fillings are considered a safe and effective option. That said, many practices, including Dr. Demetriou’s, have moved to a mercury free approach and use composite restorations instead, both for their natural appearance and their conservative, tooth preserving placement.
If you have existing silver fillings that are intact and functioning well, there is usually no urgent need to replace them. But if an old filling is worn, cracked, or leaking, replacing it with a composite restoration is a great opportunity to strengthen the tooth and improve its look at the same time.
What to expect when you get a composite filling
Many patients feel more at ease once they know what the visit involves. Placing a composite filling is a straightforward, comfortable procedure that usually takes less than an hour for a single tooth. Dr. Demetriou begins by numbing the area so you stay comfortable throughout. The decay is gently removed, and the tooth is cleaned and prepared. The composite material is then applied in thin layers and shaped to match the natural contours of your tooth. A special curing light hardens each layer, and the filling is polished so it feels smooth and blends seamlessly with your smile.
Because composite bonds directly to the tooth and hardens right away, there is no waiting period. You can eat and drink normally once the numbness wears off, and most patients return to their day with no disruption at all.
How to decide what is right for you
The best choice depends on your specific situation, including where the tooth is located, how much decay is present, and your personal preferences. Here are a few things to keep in mind:
- For visible teeth, composite offers the most natural result
- For preserving as much healthy tooth as possible, composite requires less removal
- For replacing old, damaged silver fillings, composite restores both strength and appearance
- For any concerns about the look or feel of your current fillings, an exam is the best starting point
Dr. Demetriou will evaluate your tooth and walk you through the options honestly, never pushing a treatment you do not need.
Restore your smile with confidence
Whether you are dealing with a new cavity or thinking about updating older fillings, you have good options, and you do not have to figure it out alone. With nearly 40 years of experience, Dr. Demetriou provides comfortable, natural looking restorations tailored to your needs.
Ready to take care of that tooth? Request an appointment at our North Andover office or register as a new patient today. You can also call us at 978-794-0010.