title: [Studies on the cytotoxic action of various composite resins by means of cell culture (author's transl)].
abstract: In order to investigate biocompatibility of composite resin, L strain cells were brought contact either directly with mixed resin or with immersion liquid, which was obtained by replacing with fresh medium twice for 48 hours, followed by utilizing these immersed medium as the second immersion liquid or the third, and results were assessed by cell multiplication rate calculated from cell nuclei counting per milliliter of medium, morphological observation and agar diffusion method, originally used by Guess et al. (1965) and later modified. The materials used were selected from the presently available composite resins, which were classified by composition and form for use provided by manufacturers, i. e, powder, paste, or liquid. Those which were classified were as follows; Types Pa-L-L (Paste-Liquid-Liquid), Pa-L (Paste-Liquid), Pa-Pa (Paste-Paste), Po-L (Powder-Liquid) and Po-L-Pa (Powder-Liquid-Paste).
mesh_terms: D002455:Cell Division / Q000187:drug effects; D003188:Composite Resins / Q000633:toxicity*; D003764:Dental Materials / Q000633:toxicity*; D006128:Growth; D007739:L Cells / Q000187:drug effects / Q000502:physiology / Q000648:ultrastructure
chemical_list: D003188:Composite Resins; D003764:Dental Materials