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Figure 1. Morphology and viability were changed by compressive force. Phase-contrast microscopic appearance of MG-63 cells under compressive force for 24 hrs. Bar = 100 µm. The compressive force resulted in a change of the morphology of MG-63 cells. The arrangement of the cells became irregular, and several spaces were observed between cells, as compared with control cells. As the compressive force became greater, some atrophic cells began to appear. (A) Control; (B) 1.02 x 10–4 N/cm2; (C) 2.04 x 10–4 N/cm2; (D) 4.08 x 10–4 N/cm2; and (E) 6.12 x 10–4 N/cm2. (F) Viability of MG-63 cells under compressive force. Values represent the mean ± SD of the relative absorbance of 3 experimental samples (exp.) per control sample (cont.). Cell viability was decreased at all levels of compressive force applied for 12 hrs, and there was no significant difference between cell viability at 12 and that at 24 hrs. Greater compressive force tended to inhibit cell viability to a greater extent. Significantly different from controls: * p < 0.05 (Bonferroni/Dunn method); a, vs. control; b, vs. 6.12 x 10–4 N/cm2 (n = 3).
J DENT RES, Vol. 85, No. 3,
240-244 (2006)
DOI: 10.1177/154405910608500307
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