“No Difference in Marginal Integrity of Bulk Fill Resin Composite Class II Restorations with and without Bis-GMA after 12 Months: A Randomized Controlled Clinical Trial”

https://pubmed.ncbi.nlm.nih.gov/38114979

This randomized controlled clinical trial found no significant difference in marginal integrity between Bis-GMA-free and Bis-GMA-containing bulk fill resin composite class II restorations after a 12-month period.