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Dental Composite Fillings and Resin-Based Sealants — household safety profile

Low risk

Patients seeking 'mercury-free' restorations switched from amalgam to composite — not realizing composite contains bis-GMA, a BPA-derived monomer that continuously hydrolyzes in saliva.

What is this product?

Patients seeking 'mercury-free' restorations switched from amalgam to composite — not realizing composite contains bis-GMA, a BPA-derived monomer that continuously hydrolyzes in saliva. The irony: health-conscious patients replaced one environmental chemical (mercury) with another (BPA).

What's in it

Click any compound name for its full safety profile, regulatory consensus, and exposure data.

Base ingredients

How to use it more safely

  • Apply only by qualified dental professionals in clinical settings
  • Use with proper isolation and moisture control during application
  • Allow adequate curing time per manufacturer specifications
  • Use in well-ventilated areas to minimize inhalation exposure

Red flags — when to walk away

  • Identified safety concern — Dental composites contain bis-GMA, a bisphenol A-derived monomer that hydrolyzes in saliva → BPA release (0.6–90 µg/day first 24 hr).

Green flags — what to look for

  • Third-party safety tested — Independent laboratory verification of safety claims

Safer alternatives

  • Glass ionomer cement — Lower toxicity profile; better fluoride release; less technique-sensitive
  • Ceramic or porcelain restorations — Inert material; no polymerization byproducts; greater longevity

Frequently asked questions

What's in Dental Composite Fillings and Resin-Based Sealants?

This product type can contain: Bis-GMA (bisphenol A-glycidyl methacrylate), among others. Click any compound name above for the full safety profile.

How can I use Dental Composite Fillings and Resin-Based Sealants more safely?

Apply only by qualified dental professionals in clinical settings; Use with proper isolation and moisture control during application; Allow adequate curing time per manufacturer specifications

Are there safer alternatives to Dental Composite Fillings and Resin-Based Sealants?

Yes — consider: Glass ionomer cement; Ceramic or porcelain restorations. See the Safer alternatives section above for details.

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Reference data, not professional advice. Aggregates publicly available regulatory and scientific information. Why we built ALETHEIA →