Mechanical Strength and Viscoelastic Response of the Periodontal Ligament in Relation to Structure

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Figure 15

(a) Stress-relaxation curves as represented by $\text{[math]}$ for specimens treated with PBS or 8 units/mL collagenase, reproduced from Komatsu et al. [77], by permission. Measured values $\text{[math]}$ are well expressed by an equation: $\text{[math]}$ . (b) Ratios (A_i) and (c) relaxation times ( $\text{[math]}$ ) of the three exponential decay functions. Each column and vertical bar represent the mean + 1 SD. $\text{[math]}$ and $\text{[math]}$ compared with the PBS group.