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For the biological examination of dental resin filling materials, a solubility and hemolysis test is recommended as an in-vitro testing method. Solubility and degree of hemolysis were examined in various filling materials based on MMA and BIS-GMA. It was found that, at the beginning, solubility was considerably higher in MMA-containing materials than in the BIS-GMA systems, and that after a while the conditions were reversed. The degree of hemolysis decreased in the following order with the individual materials: 1. Posite, Sevriton, Adatpic, 2. Epoxylite, Smile, Palakav, 3. MMA-BPO/Amin and MMA-TBBO. Comparison between the MMA and BIS-GMA monomers showed that corresponding to the same molar amounts, BIS-GMA materials developed a higher degree of hemolysis.

The test product VM 4 of the Kulzer company, Bad Homburg v.d.H., was tested and compared with the commercial products Nuva Seal, Enamelite, and Palakav. Extracted and sealed teeth were kept in water at 37 degrees C for 67 days and subsequently the adhesive strength between dental surface and sealant was tested in tensile strength tests.