FEM Analysis of Mandibular Prosthetic Overdenture Supported by Dental Implants: Evaluation of Different Retention Methods. - Marco Cicciù; Gabriele Cervino; Ennio Bramanti; Floriana Lauritano; Giuseppe Lo Giudice; Lorenzo Scappaticci; Alessandro Rapparini; Eugenio Guglielmino; Giacomo Risitano (Comput. Math. Methods Medicine, 2015)