Effects of Dyract AP and released ionic products on periodontal ligament cells and bone marrow cultures Sahlin-Platt A et al. - ICP-OES analysis of DAP extract demonstrated a significant increase in fluoride, strontium and silica. PDL cells demonstrated normal growth pattern in the direct-contact tests with the material. DAP extracts produced a dose-dependent stimulation of cell proliferation and concomitant inhibition of osteoblast specific markers and nodule formation. [more...]