On November 21st, 2017, West China School of Stomatology, Sichuan University and Faculty of Dentistry, University of Toronto renewed their cooperation agreement on research, education and clinical affairs. Both schools are leading institutes with world-class reputation, which shared a long history of fruitful collaboration. In 2010, a formal agreement between the two schools was reached and signed by Prof. Xuedong Zhou and Prof. Dennis Cvitkovitch, respectively. Since then, the connetion and cooperation between the two schools have been greatly promoted. This time, Dean and Professor Ye Ling representing West China School of Stomatology, Sichuan University joined with Dean and professor Daniel Haas representing Faculty of Dentistry, University of Toronto into the ceremony of MOU renewal.