On October 7, 2023, Prof. Banchong Mahaisavariya, President of Mahidol University, presided over the Honorary Doctorate Degree Ceremony for the academic year 2022 at Mahidol University, taking place at the Prof. Chatchawan Osathanon Lecture Room, Office of the President Building, Mahidol University (Salaya Campus). During the ceremony, Clin. Prof. Emeritus Passiri Nisalak was conferred an Honorary Doctor of Philosophy (Honoris causa) in Dentistry.

In this regard, Clin. Prof. Dr. Sirichai Kiattavorncharoen, Dean of Mahidol University Faculty of Dentistry, along with Clin. Prof. Emeritus Dr. Theeralaksna Suddhasthira, Dean’s Advisor, and Faculty Committee, also expressed warm congratulations and gave flower bouquets to Clin. Prof. Emeritus Passiri Nisalak to recognize this remarkable success.