Do tooth-colored composite fillings leach BPA in the first day after placement?
Yes. Peer-reviewed research shows that dental materials like sealants and fillings can release BPA into your body shortly after they are placed in your mouth.
What's actually in it
Tooth-colored dental materials often contain bisphenol A (BPA). This is a chemical known to disrupt your hormones. When a dentist places these materials in your mouth, they don't always stay put. They can leak directly into your saliva and eventually enter your bloodstream.
What the research says
A 2026 study in JDR Clin Trans Res found that patients show higher levels of BPA in their bodies after having dental sealants placed. The study tracked children and confirmed that these materials are a source of BPA exposure immediately following the procedure.
This peer-reviewed science confirms that the chemicals used to fix your teeth can end up inside you. While these materials are common, the data shows they are not inert. They interact with your body from the moment they are applied.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Bisphenol A Biomonitoring after Sealant Placement: A Prospective Cohort Study in Schoolchildren. | JDR Clin Trans Res | 2026 |
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