Hydroxyapatite Whiskers Based Resin Composite versus Commercial Dental Composites: Mechanical and Biocompatibility Characterization - L. Calabrese; F. Fabiano; M. Currò; C. Borsellino; L. M. Bonaccorsi; V. Fabiano; R. Ientile; E. Proverbio (Advances in Materials Science and Engineering)