Blog
Toxic Teeth - BPA Dental Bonding
Annie B. Bond
Monday, March 08, 2010
After having dental bonding on her three front teeth, Sally felt as if she was in chronic PMS. This symptom would have been easily dismissed as such, but she was in post-menopause. Aware that the plasticizer in dental bonding can be made of the synthetic estrogen bisphenol A (BPA), she called her dentist to investigate the material used, and sure enough BPA was a main ingredient.
There has been a lot of news coverage about plastics and epoxies containing BPA in recent years, focusing especially on its presence in baby products such as bottles, nipples, and toys. The New York Times columnist Nicholas D. Kristof wrote an informative overview of BPA in "Chemicals in Our Food, and Bodies", and the suspected health problems those 92 percent of us share who have been found to have BPA in our urine. Kristof discussed how the lining in food cans contains BPA, among other sources.
In early 2010, the Food and Drug Administration voiced "some concern" about BPA's safety on the brain, behavior and prostate gland in fetuses, infants and young children. BPA has also been linked to breast and prostate cancer, heart disease, and reproductive and sexual problems.
What does a synthetic estrogen do once it enters the body? Synthetic estrogens are part of a group of chemicals called endocrine disrupters. Basically what happens when you are exposed to an endocrine disruptor is that the body is expecting a natural hormone, such as estrogen, at a receptor site in the body, and takes in the chemical mimic of the hormone and begins to use it as it would the natural thing. Screech. Suddenly the body's hormonal process malfunctions because in fact the "hormone" was a plastic, and couldn't function in the much more complex way that the natural hormone would.
When Sally called her dentist, one of his first questions to her was why hadn't the bonding bothered her as much the last time he used it eight or so years earlier? As synchronicity would have it, within a few weeks of the bonding Sally read about a new study that showed that "women in menopause are more prone to the BPA-associated health effects of inflammation and oxidative stress than either men or women who are still menstruating."
It took seven months of back and forth with Sally's dentist to come up with a solution. During that time, Sally gained 10 pounds and felt out of hormonal balance. A so-called BPA-free alternative bonding material that her dentist ordered arrived only to be revealed in the fine print that the material contained BPA, sealed in with polyurethane. Her dentist was reluctant to use something that could be as bad or worse.
Another alternative they discussed was porcelain, but it is very expensive as a bonding material and if it chips the entire bonding has to be replaced.
Sally and her dentist finally settled upon a simple sealant used to shine and protect teeth from staining. He covered all of the bonding in Sally's mouth with it. As it wears it shows stains, so it will alert her to a breakdown in her protection.
While the press is full of stories about BPA as it relates to baby's bottles and polycarbonate plastic, its astonishing prevalence in dental materials appears to be largely ignored and unknown. Sally's dentist -eager to help--noted that now that he is noticing, BPA is in all regular bonding material and that this issue is not discussed in any of the professional dental journals that he regularly reads.
Menopausal women aside, as mentioned above, all age groups and sexes may be vulnerable. Surely we need to use The Precautionary Principle and reduce our exposure as much as possible. However, as Mother Nature News Network wrote recently, being BPA-free is easier said than done.
Green living expert Annie B. Bond is the best-selling author of five books and the editor of greenchicafe.com.
The opinions expressed here are solely those of the author and not necessarily those of Healthy Child Healthy World.
Related Reading:
BPA Protection: Spinach and Soy
Some Unpleasant Sources of BPA: Paper Products
Posted by A. Conce on 04/01/2010 at 02:16 PM
Dave- can you site sources on that? I like this site but have found that there have been several articles that I do not agree to be sound warning or advice. If you have conflicting information, would you please cite and share it with us? Thank you!
Posted by YS on 04/01/2010 at 01:31 PM
What about gold fillings?
Posted by Dave on 03/08/2010 at 07:03 PM
There is NO free BPA in any composite filling materials.
BPA is a precursor, combined with Glycidyl Dimethacrylate (GMA) to make Bis-GMA. An extremely stable resin. It does NOT break down to release ANY BPA at anything near physiologic conditions.
Repeat, there is NO free BPA in any composite filling materials.
There IS some BPA released from some sealants that are made from Bis-DMA.
More comments:
Posted by Anne on 04/12/2010 at 02:53 AM
I’m so glad that this issue is finally coming out. Years ago, the dentist advised me to have my daughter’s (she was then 5) teeth bonded to prevent cavities. I read up on the ingredients and found that the only study to be done on the safety of BPA was by the company that made it! This set off alarms. I decided that we would be very careful with teeth cleaning and forego the sealants. I’m so glad I did. How sad that the dental industry has not gotten on the bandwagon on this. They didn’t do so with mercury in the old fillings until lots of others had, and now they are late with this issue. How much less could I trust this industry?