He was born in
Evansville, Wisconsin, in 1873. He attended
University of Minnesota School of Dentistry and received his dental degree in 1893. After that he continued practicing general dentistry in
Green Bay, Wisconsin. He eventually enrolled himself at Angle School of Orthodontia, where he was part of first graduating class in 1900. He then became one of the first instructors of that institution after
Edward Angle. He then moved to Boston, where he worked as an orthodontic professor in Forsyth Clinic. He eventually moved to
Buffalo, New York, where he started practicing orthodontics. In addition, Pullen was an orthodontic professor at
University at Buffalo School of Dental Medicine from 1919 to 1934. Pullen was married to Claire Smith of Buffalo. He two brothers named Lester L. Pullen and Ralph Pullen. He died in
St. Petersburg, Florida in 1938. ==Orthodontics==