Dr. Krell received his D.D.S. and M.S. degrees from the University of Iowa in 1981 and 1983, respectively. He earned his M.A. degree in sociology-anthropology in 1975, from the United States International University in San Diego, Calif.
Dr. Krell has been an endodontist for 38 years. He was a full-time educator for 8 years at the University of Iowa and was in private practice with Endodontics PC in West Des Moines, Iowa for 29 years until he retired December 31,2017. He is still an adjunct clinical Professor in the Department of Endodontics at the University of Iowa College of Dentistry.
Dr. Krell is a Diplomate of the American Board of Endodontics, as well as a past president and past director of the ABE. He is a past Trustee and president of AAEF (now the Foundation for Endodontics) and is again a Foundation Trustee and is the president of the American Association of Endodontists.
Dr. Krell has been married for 48 years to Diane and they have five grand children. He still has research interests in cracked teeth and vertical root fractures.