Abstract
To study the biomimetic mineralization behaviour of piezoelectric pulp-cap films, bioelectret chitosan films were prepared by polarization in an electric field and soaked in PBS with lysozyme for piezoelectricity attenuation testing. The results showed that comparing these with samples stored in an exsiccator, the films soaked in PBS had accelerated d33 loss. Calcium phosphate crystals nucleated and grew on the surfaces of samples soaked in supersaturated calcification solution at 37 for 1, 6, 12 and 24 h. OCP and HA were found to co-precipitate on the surfaces within 24 h of immersion. This novel piezoelectric inorganic-organic pulp-cap has the potential to be applied in dental pulp capping.
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