N Sgaramella1, D Compilato2, A Padovano Di Leva3, G Giannatempo3, G Colella1. 1. Department of Head and Neck Surgery, II University of Naples, Italy. 2. Department of Surgical, Oncological and Oral Sciences, Sector of Oral Medicine "V. Margiotta", University of Palermo, Italy. 3. Department of Surgical Sciences, University of Foggia, Italy.