What Are White Fillings?

January 17, 2011

The days of dark amalgam fillings are over for most Americans. Today, contemporary dentists prefer to place the more natural looking, mercury-free alternative, composite resin fillings. But what is composite resin? Is it safe? Is it durable?

What is composite resin?

Amalgam Dental Filling

Composite resin is a synthetic material that will not dissolve or dehydrate. In addition, composite resin can be tinted to match tooth structure,

so when used in a filling, the result looks like healthy, natural tooth enamel.  Scientifically speaking, composite resin is made of Biz-GMA monomers or analog, plus silica and a photoinitiator. This last word describes the ingredient that makes liquid composite resin harden when exposed to a dental curing light. Other components are added to the mixture to improve flow, translucency, and adhesiveness.

Is composite resin safe?

Unlike dental amalgam, the dark metal filling material that has been used for decades, composite resin contains no heavy metal (namely, mercury). Some people have experienced physical illness because of mercury in dental amalgam, and both the FDA and ADA have vacillated about the safety of amalgam fillings. At present, pregnant women, young children, and people with an amalgam sensitivity are advised not to get mercury fillings.

Are composite fillings durable?

Between 1990-2000, the strength of composite resin dental material was significantly enhanced. While initially the material was prone to leaking and breaking, now composite resin is very durable. A clinically experienced dentist will attend to the details of filling placement to ensure proper bond and, thus, the filling’s integrity. One technique, for instance, is layering a deep filling must so that it will endure the rigors of day-to-day chewing, biting, temperature fluctuations, and general use.

I’m Dr. Charles Martin, an experienced clinician and diagnostician at the Richmond Smile Center. For years, I’ve placed composite dental fillings, not only because they contain no mercury, but also because I understand the importance of a beautiful, natural-looking smile. I’m a restorative dentist, as well as a cosmetic dentist, so I also prefer white, ceramic crowns and cosmetic bonding, when appropriate. If you need restorative or cosmetic dentistry, consider the experience and skill level of your dentist. The proper administration of composite resin fillings, as well as most dental procedures, is essential to successful results.

If you live in the Richmond area, call 888.22.SMILES today to reserve an appointment with me, Dr. Martin. We can discuss your smile’s health, appearance, and function, then determine the best treatment plan for your unique situation.

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