Effect of the fluoride content on the bioactivity of calcium silicate-based endodontic cements
| Autor: | Maria Giovanna Gandolfi, Enrico Modena, Francesco Siboni, Carlo Prati, Paola Taddei, Anna Tinti |
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| Přispěvatelé: | P. Taddei, E. Modena, A. Tinti, F. Siboni, C. Prati, M. G. Gandolfi |
| Rok vydání: | 2014 |
| Předmět: |
biomedical applications
musculoskeletal diseases spectroscopy Ettringite Materials science chemistry.chemical_element Mineralogy engineering.material Calcium Portlandite Apatite chemical propertie chemistry.chemical_compound Materials Chemistry Cement silicate Process Chemistry and Technology technology industry and agriculture equipment and supplies Surfaces Coatings and Films Electronic Optical and Magnetic Materials surgical procedures operative chemistry apatite visual_art Calcium silicate Ceramics and Composites engineering visual_art.visual_art_medium Fluoride White Portland cement Nuclear chemistry |
| Zdroj: | Ceramics International. 40:4095-4107 |
| ISSN: | 0272-8842 |
| Popis: | This study was aimed at investigating the effect of the fluoride content (added as NaF) on the in vitro bioactivity of an experimental calcium silicate-based cement (wTC-Bi) obtained from white Portland cement. To this purpose, wTC-Bi and fluoride-doped wTC-Bi cements (i.e. FTC-Bi and F10TC-Bi with fluoride contents of 1% and 10% w/w, respectively) were aged in Dulbecco's Phosphate Buffered Saline (DPBS) and were comparatively analysed by micro-Raman and IR spectroscopy to investigate the presence of deposits on the surface of the cements and the composition changes of the cement as a function of the storage time. Commercial White ProRoot MTA was analyzed as reference. All the tested cements showed the formation of a calcium phosphate deposit already after 5 h of soaking. Fluoride-doped cements demonstrated a higher bioactivity than the undoped wTC-Bi cement. This result was explained in relation to the different solubility of the deposit formed on the cements: a B-type carbonated apatite on the undoped cements and a less soluble fluoride containing B-type carbonated apatite on the fluoride-doped cements. The NaF content was found to influence the apatite forming ability; actually, the cement richer in NaF, i.e. F10TC-Bi showed a lower bioactivity than FTC-Bi, which contained only 1% w/w of NaF. This result may be explained in relation to the lower hydration rate of the former, which showed the formation of lower amounts of CSH, ettringite and portlandite phases. |
| Databáze: | OpenAIRE |
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