Publicação: Cytotoxic effects of different concentrations of chlorhexidine
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Purpose: To evaluate the cytotoxic effects of different concentrations of Chlorhexidine (Chx) to the odontoblast cell line MDPC-23. Methods: The odontoblast-like cells were seeded (30,000 cells/cm 2) in 60 wells of 24-well dishes and then incubated in contact with the following experimental and control solutions: Group 1: 0.0024% Chx; Group 2: 0.004% Chx; Group 3: 0.02% Chx; Group 4: Phosphate buffer saline solution (PBS, negative control); and Group 5: 0.06% H 2O 2 (positive control). Cell metabolic activity was measured by MTT assay and the cell morphology was analyzed by SEM. Results: The cytotoxic effects of Chx are dose-dependent. The reduction in the cell metabolism for Groups 1, 2, and 3 was 24.8%, 29.9% and 70.8%, respectively. No statistical difference was observed between the Groups 1 and 2 in which no significant cell morphology changes occurred. Consequently, it was concluded that 0.02% Chx solution presents high cytotoxicity to the odontoblast-like cells MDPC-23. On theother hand, 0.0024% and 0.004% Chx causes slight cytopathic effects to the cultured cells.
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buffer, chlorhexidine, coloring agent, diagnostic agent, hydrogen peroxide, oxidizing agent, sodium chloride, tetrazolium, thiazole derivative, thiazolyl blue, topical antiinfective agent, unclassified drug, animal, cell adhesion, cell line, cell membrane, cell shape, comparative study, dose response, drug effect, metabolism, mouse, odontoblast, pathology, ultrastructure, Animals, Anti-Infective Agents, Local, Buffers, Cell Adhesion, Cell Line, Cell Membrane, Cell Shape, Chlorhexidine, Coloring Agents, Dose-Response Relationship, Drug, Hydrogen Peroxide, Mice, Odontoblasts, Oxidants, Sodium Chloride, Tetrazolium Salts, Thiazoles
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Inglês
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American Journal of Dentistry, v. 20, n. 6, p. 400-404, 2007.
