Composite Dental Fillings in Portland, ME
Repair cavities and minor tooth damage with tooth-colored fillings that blend naturally with your smile.
Cavity Repair That Looks and Feels Natural
Cavities remain one of the most common dental problems across all age groups, and treating them early is one of the simplest ways to prevent more extensive — and more costly — restorations down the road. Composite dental fillings offer a direct, conservative repair that bonds to the tooth structure and matches its natural color, making the restoration virtually invisible once placed.
At Prosthodontics Associates, P.A., our dental team uses composite resin to repair cavities, replace worn or failing fillings, and address minor chips or fractures. Unlike traditional amalgam fillings, composite bonds adhesively to the tooth, which can allow for a smaller preparation and help preserve more of your healthy enamel. The result is a restoration that supports the remaining tooth structure while blending seamlessly into your smile.
Our Portland office provides this treatment as part of our broader commitment to conservative, patient-centered care. For patients with cavities or older fillings that need attention, composite fillings are often the most straightforward path to a healthy, natural-looking result.
Composite Fillings vs. Amalgam: Key Differences
For decades, silver amalgam was the standard material for filling cavities. It is strong and cost-effective, but its metallic appearance and the larger cavity preparation it requires have led many patients and dentists to prefer composite resin. Composite is applied in layers and hardened with a curing light, bonding directly to the tooth — a process that typically removes less healthy structure than amalgam preparation.
Composite also offers better aesthetics. The resin is shade-matched to your tooth before placement, producing a filling that is difficult to detect visually. For small and medium cavities — particularly in areas visible when you smile — composite is often the preferred choice. For very large restorations on back teeth, your dentist may discuss whether a crown or onlay might offer better long-term protection than a filling of any material.
- Tooth-colored material that blends with natural enamel
- Bonds adhesively, often requiring less tooth removal
- Mercury-free alternative to traditional amalgam
- Suitable for front and back teeth in most cases
What to Expect During Your Filling Appointment
Composite fillings are typically completed in a single visit. Here is the general process.
Diagnosis and Numbing
The tooth is examined and the extent of decay is confirmed, often with the aid of digital X-rays. Local anesthesia is administered to keep you comfortable throughout the procedure.
Decay Removal
The decayed portion of the tooth is carefully removed, preserving as much healthy structure as possible. The cavity is cleaned and prepared for the composite material.
Layered Placement and Curing
Composite resin is applied in thin layers and shaped to match the tooth contour. Each layer is hardened with a special curing light before the next is added, building up a strong, well-bonded restoration.
Shaping and Polishing
The completed filling is shaped to align with your bite and polished to a smooth finish. The final result should feel comfortable and look indistinguishable from the surrounding tooth.
Why Composite Is Our Preferred Filling Material
Conservative Tooth Preparation
Composite bonds directly to enamel and dentin, which often allows the dentist to preserve more healthy tooth structure compared to amalgam, which relies on mechanical retention.
Natural Appearance
Each filling is shade-matched before placement, so the restoration blends with the surrounding tooth. Most patients and observers cannot tell a composite filling is there.
Versatile Applications
Beyond cavities, composite resin can repair chipped edges, close small gaps between teeth, and reshape worn or uneven tooth surfaces — making it a practical material for a range of minor restorations.
Single-Visit Convenience
Most composite fillings are placed in one appointment, allowing you to return to your normal routine the same day with a fully restored tooth.
Frequently Asked Questions
- What is the difference between composite and amalgam fillings?
- Amalgam fillings are made from a mixture of metals including silver, mercury, tin, and copper. They are durable and have been used for over a century, but their dark color makes them visible in the mouth. Composite fillings use a tooth-colored resin that is bonded directly to the tooth structure, producing a result that blends with the surrounding enamel. Composite also allows for a more conservative preparation, meaning less healthy tooth structure may need to be removed compared to amalgam.
- How long do composite fillings last?
- The lifespan of a composite filling depends on its size, location, and the forces it encounters during chewing. Small to medium fillings in low-stress areas often last seven to ten years or more. Fillings on back teeth that absorb heavy biting forces may wear faster. Regular dental checkups allow your dentist to monitor fillings and recommend replacement before a small issue becomes a larger one.
- Will I experience sensitivity after a composite filling?
- Mild sensitivity to hot, cold, or pressure is common for a few days to a couple of weeks after placement. This is a normal response as the tooth adjusts to the new restoration. The sensitivity typically resolves on its own. If it persists or worsens, contact our office so we can evaluate the filling and make any necessary adjustments.
- Can old amalgam fillings be replaced with composite?
- Yes. Many patients choose to replace aging or deteriorating amalgam fillings with composite for cosmetic reasons or because the old filling has started to crack, leak, or develop decay around its margins. Your dentist will evaluate each filling to determine whether replacement is clinically appropriate. Not every amalgam filling needs to be replaced — only those that are failing or causing concern.
- Does insurance cover composite fillings?
- Many dental insurance plans cover composite fillings, though the extent of coverage varies by plan. Some plans cover composite at the same rate as amalgam, while others may cover the amalgam rate and require the patient to pay the difference. Our office can help you understand your specific benefits before treatment begins.
Need a Filling? Schedule a Visit
If you suspect a cavity or have an old filling that needs attention, contact our office to schedule an evaluation. Early treatment helps keep restorations simple and affordable.