Material safety
BPA in Dental Materials
BPA (bisphenol A) is found in trace amounts in some composite resin and dental sealant formulations as a breakdown product of the base monomer BisGMA. The research on clinical significance of dental BPA exposure remains limited, though BPA-free formulations are increasingly available.
Common uses
- Relevant to patients evaluating composite resin fillings and sealants
- A consideration in broader metal-free and material-conscious dental treatment planning
Advantages
- + BPA-free composite and sealant options are increasingly available and can be specifically requested
Limitations
- − BPA exposure from dental materials is considered very small relative to other common environmental sources in most research
- − Not directly applicable to implant posts or ceramic crowns, which do not contain BPA
Frequently asked questions
Do dental implants contain BPA?+
No — titanium and zirconia implant posts and ceramic crowns do not contain BPA. BPA concerns are more relevant to composite resin fillings and some dental sealants.
How significant is BPA exposure from dental composites?+
Current research suggests BPA exposure from dental materials is very small compared to other environmental sources; patients with specific concerns can ask their provider about BPA-free formulations as an alternative.