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  • Title: Effect of HBSS storage time on human periodontal ligament fibroblast viability.
    Author: de Souza BD, Bortoluzzi EA, da Silveira Teixeira C, Felippe WT, Simões CM, Felippe MC.
    Journal: Dent Traumatol; 2010 Dec; 26(6):481-3. PubMed ID: 20946345.
    Abstract:
    Hank's balanced salt solution (HBSS) is recommended for the storage of avulsed teeth. The objective of this study was to evaluate if the HBSS storage time influences its ability to maintain the viability of human periodontal ligament fibroblasts (PDLF) by the analysis of cell metabolic function using MTT assay. PDLF were kept at 20°C for 3, 6, 24, 48, 72, 96 and 120 h in recently prepared HBSS (HBSS), HBSS stored for 6 months (HBSS 6 M), HBSS stored for 12 months (HBSS 12 M), and in Save-A-Tooth system's HBSS (Save). Minimum essential medium (MEM) at 37°C and tap water at 20°C served as positive and negative controls, respectively. Cell viability was determined by the tetrazolium salt-based colorimetric (MTT) assay. Data were statistically analyzed by the Kruskal-Wallis and Scheffé tests (α = 5%). Starting with the 6 h time-point, HBSS was significantly more effective than HBSS 6 M, HBSS 12 M and Save in maintaining cell viability. HBSS 6 M effectiveness was similar to that of HBSS 12 M for up to 48 h, becoming higher at 72 h. In conclusion, the storage time of HBSS had a negative influence on its ability to maintain PDLF viability.
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