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Fig. 1 | BioMedical Engineering OnLine

Fig. 1

From: Damping ratio analysis of tooth stability under various simulated degrees of vertical alveolar bone loss and different root types

Fig. 1

a The fabricated tooth models. The model setup with simulated tooth, periodontal ligament and alveolar bone. White arrows indicated the impact positions. b The detector probe consisted of a piezoelectric microphone and an impact rod, driven by electromagnetic coil. c The typical frequency response spectrum of the vibration experiment. Damping ratio was calculated using the half-power method. Fn, resonance frequency. Fa and Fb are the frequencies at 0.707 times the maximum amplitude of the resonance frequency

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