When his family moved in 1949 because of his father’s job, Yohn chose to stay in Jackson because he wanted to graduate with his classmates. Compressing 10th, 11th and 12th grades into two years, he graduated summa cum laude in June, 1951. He worked nights and weekends at Loud & Jackson Dairy to support himself in high school.
While his family lacked the resources to send him to college, he said lady luck was looking out for him when the Jackson Women’s City Club gave him a two-year academic scholarship to Jackson Junior College.
Graduated from Jackson Junior College in 1953 with an Associate in Science degree.
Lacking resources and support to further his education, Yohn enrolled in the U.S. Navy during the “forgotten” Korean War from 1953-55.
After being released from the Navy, he returned to civilian life and completed his Bachelor of Arts degree from Bowling Green State University in 1957. He received his Doctor of Dental Surgery (DDS) and Master of Science in Complete Denture Prostheses degrees from the University of Michigan in 1963 and 1968, respectively.
He joined the University of Michigan as a clinical instructor in 1963. He was promoted to assistant professor in 1968 and to associate professor with tenure in 1975. He also maintained a part-time private practice.
Yohn truly loved teaching dental students how to make false teeth, partial dentures, fixed partial dentures, gold crowns, porcelain crowns, porcelain fused to metal crowns and implant supported restorations. He showed empathy, compassion and understanding for the University’s dental patients.
Conducted research studying movement of the lower jaw during chewing, including one study with 35 human subjects. He spent 35 years analyzing and transferring film of the study to digital medium to preserve it so future generations of anatomist, dentist and dental students can better understand how the human lower jaw moves. The Journal of the American Dental Association published an article on his research in June 2016.
He is married to Karlene, and they have three children and three grandchildren.