Tooth colored composite fillings

Why fillings exist

A cavity is a hole in the enamel of a tooth caused by bacterial decay. Once decay breaks through the outer layer of the tooth, it cannot be brushed or flossed away. The damaged tooth structure has to be physically removed and the resulting space has to be filled and sealed, otherwise the decay continues into the dentin and eventually the nerve. That is what a filling does. It removes the decay, restores the shape of the tooth, and stops the process before it turns into a much bigger problem.

Caught early, a filling is the smallest, fastest, and least expensive intervention in restorative dentistry. Caught late, the same cavity often becomes a crown, a root canal, or an extraction. The whole point of a six month exam is to find and fix things while they are still simple. More about routine exams.

Tooth colored composite fillings

We use composite resin for every filling we place. Composite is a tooth colored material made of a resin matrix reinforced with ceramic particles that bonds directly to the tooth. It is shaped while soft, cured to full hardness with a blue light, then polished smooth. Done well, a composite filling is essentially invisible, even on a front tooth.

The reasons we prefer composite over older materials are practical, not cosmetic alone:

• It bonds to the tooth. Composite chemically adheres to enamel and dentin, which means we can be more conservative and remove less healthy tooth structure to retain it.
• It looks like a tooth. Custom shading lets us match the color of the surrounding enamel so well that most patients cannot find their fillings in the mirror.
• It is mercury free. No heavy metals, no concerns about long term metal exposure.
• It is repairable. If a small chip or wear spot develops over time, we can usually add to the existing filling without having to redo the whole thing.

Why we do not place silver amalgam

Silver amalgam fillings, the dark gray ones a lot of patients still have from the 80s and 90s, are made of a metal alloy that contains mercury along with silver, tin, and copper. The American Dental Association still considers amalgam safe for use, and we are not in the business of fearmongering about old work that is doing its job. Many of our patients have decades old amalgam fillings that we monitor and leave alone.

That said, we do not place new amalgam, and there are real reasons for that beyond aesthetics. Amalgam does not bond to the tooth, so the cavity preparation has to be larger to mechanically retain the filling. Amalgam expands and contracts more than tooth structure with temperature changes, which over time can drive cracks into the tooth. And amalgam looks like a piece of metal in your mouth. Composite gives us a better material that requires less tooth removal, looks natural, and lets us bond instead of mechanically wedge. That is the trade we make.

If you have an old amalgam filling that is leaking, fractured, decayed underneath, or causing the tooth to flex, we will recommend replacement. If it is sealed and stable, we will leave it alone and check it at every visit.

What a filling appointment looks like

Most fillings take 30 to 60 minutes from start to finish, depending on the size and number of teeth being treated. Here is the sequence:

1. Numbing. Topical gel followed by a slow, gentle local anesthetic injection. We give the anesthetic time to fully take effect before we begin. If you can still feel anything when we test the area, we add more.
2. Decay removal. The decayed tooth structure is gently removed with a high speed handpiece and a slow speed handpiece. Modern technique is conservative, so we only remove what is actually decayed.
3. Isolation. The tooth is dried and isolated to keep saliva off the bonding surface, since composite will not bond to a wet tooth.
4. Bonding. A bonding agent is applied to the prepared tooth and cured with a blue light.
5. Layering. Composite resin is placed in thin layers, each one cured to full hardness, and shaped to match the original anatomy of the tooth.
6. Bite check and polish. We have you bite down on articulating paper to make sure the filling is at the right height, adjust if needed, and polish to a smooth finish.

You walk out with a finished, fully cured restoration. No second visit, no temporary, no waiting for a lab.

After your filling

A few things to expect over the first few days:

• Numbness for one to two hours. Avoid eating or drinking anything hot until it wears off so you do not accidentally bite your cheek, lip, or tongue.
• Some cold sensitivity. Mild sensitivity to cold for a few days to a couple of weeks is normal, especially on larger fillings. It almost always resolves on its own.
• A slightly different bite. If your bite feels off after the numbness wears off, call us and come back in. A two minute adjustment is much better than chewing on a high spot for a week.
• Eat normally. Composite is fully hardened before you leave. There is no waiting period.

Persistent throbbing, sharp pain on biting, or pain that wakes you up at night are not normal and should be reported. They can be signs that the decay was deeper than expected and the nerve is irritated, which occasionally requires follow up treatment.

How long composite fillings last

Composite fillings typically last 7 to 15 years, with some lasting much longer. The honest answer is that lifespan depends on a lot of variables: the size and location of the filling, your bite forces, whether you grind your teeth, your home care, your diet, and your luck. Small fillings in low stress areas can last decades. Large fillings on heavily loaded back teeth wear faster.

Most fillings do not fail catastrophically. They wear down slowly, develop small marginal gaps, or get a tiny new cavity around the edge years later. Routine exams catch all of that early so we can repair or replace before there is real damage to the tooth underneath.

Cost and insurance

Almost every dental insurance plan covers composite fillings, though some older plans still cover them at the lower amalgam rate. We are in network with most major PPO plans, file claims directly, and verify benefits before treatment so we can quote your out of pocket cost up front. For self pay patients, our composite filling pricing is straightforward. Larger or multi surface fillings cost more than small ones because they take more time and material.

See accepted insurance plans, explore financing options, or request your appointment online.