Dr. Rojo and Dr. Rojo Xicart attended the conference SEPA 2015 Barcelona celebrated on 26th, 27th and 28th February. In this meeting best specialists worldwide in Periodontology and Implantology presented their latest advances. Within this congress which counted with 2,600 professionals were conducted more workshops. Indeed in one of them Dr. Rojo Xicart collaborated with Dr. Paul Levy of Tufts University (Boston, USA) in the course entitled: Optimization of root debridement in Periodontology. The course focused on how to approach the treatment in a periodontal patient and consisted in a theoretical and practical parts.