Joseph Tonzetich

Biography

Dr. Joseph Tonzetich (1924–2000) is considered the modern-day pioneer in bad breath research. During the 1960s and 1970s in particular, Tonzetich and colleagues established that volatile sulfur-containing compounds were key identifiable gases in oral malodor. He also provided quantitative support for the hypothesis proposed by G.L.Grapp in the early 1930s that the back of the tongue is the major source of oral malodor.