Figure 1.

Dose response in L929 and gingival fibroblast activity to liquid Clear resin and Dental SG resin in monolayer culture model. L929 cells ((a), (c)) and gingival fibroblasts ((b), (d)) were exposed to Clear resin or Dental SG resin at 50%–0.0005%. Then cells were subjected to MTT ((a), (b)) and resazurin-based toxicity assays ((c), (d)). Data are given as mean ± standard deviation and are presented relative to the untreated control (W/O). Four independent experiments were performed. ^∗p < 0.05, resin versus W/O; the color of ∗ indicates the specific resin; 50% (I); 5% (II); 0.5% (III); 0.05% (IV); 0.005% (V); 0.0005% (VI).