Every Thursday morning from 8 to 10 am, 1st and 2nd year students discuss together with Prof. Aimetti and Dr. Romano two papers from classic literature. The papers are chosen and divided on the base of their topic by the teachers at the beginning of the year. The students present the papers, discussing within them and the teachers about the main aspects from the clinical and methodological point of view. At the end of each group of papers on the same topic, an exam is planned in order to verify the students’ knowledge and skills to compare the literature, to induce them support scientifically the clinical choices that they apply daily on their patients. This month topic is periodontal plastic surgery.