Fig. 2.
LDH release from gingival fibroblast. Percentage (mean ± SD) of extracellularly released LDH activity from gingival fibroblasts for different adhesives (OptiBond FL and OptiBond All-In-One) and different light-curing distances (1 mm, 4 mm and 7 mm). Values of the test groups were not significantly different to the untreated control group. Comparisons within the same adhesives between the different light-curing distances that are not significantly different are marked with same letters (lower case letters and capital letters for OptiBond FL and OptiBond All-In-One, respectively). Comparisons within the same light-curing distance between the different adhesives that are not significantly different, are marked with ns