He was the founder of scientific dentistry and the first dental school in Turkey. After graduating from the Mekteb-i Sultani (Galatasaray), he graduated from the Mekteb-i Tıbbiye-i Askeriye-i Şahane on July 7, 1894. Halit Şazi Bey, who began his medical career on February 5, 1897, with the rank of captain-physician, was appointed acting instructor in Dr. Cemil Pasha’s “surgical operations” department. On November 26, 1904, he was appointed as the professor of “surgical operations” at the Imperial Medical School.
On October 7, 1909, he founded the Dişçi Mekteb-i Alî—the first dental school at the Faculty of Medicine of the Darülfünun-i Osmani—and was appointed to teach oral and dental diseases and prosthodontics. Until his death, he taught courses on oral and dental diseases, prosthodontics, and oral and dental systemic diseases at this school. He also served as the court dentist.
He served as the first president of the Alumni and Student Association of the Faculty of Medicine’s Department of Dentistry, established in 1912, which is now known as the Turkish Dental Association.