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Keith V. Krell, D.D.S., M.S., M.A.


Dr. Krell currently maintains a full-time private practice with a group in West Des Moines, Iowa. He is an adjunct professor in the department of endodontics at the University of Iowa College of Dentistry where he also served as graduate program director. In 1993, he retired from the United States Army National Guard as a lieutenant colonel after 22 years of service.

He 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 is a Diplomate of the American Board of Endodontics, as well as a past president and past director of the ABE. He also served as a director on the AAE Board of Directors and is a current trustee for the AAE Foundation.

Dr. Krell is a member of the Scientific Advisory Board of the Journal of Endodontics and Editorial Board of Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology.

Contact information

1450 28th St.
West Des Moines, IA 50266
Phone: 515-224-4455
Fax: 515-224-4040

Available Sessions

  • Cracked Teeth: 18 Years of Clinical Evaluation
    Topic: Differential Diagnosis
    Learning Objectives:
    • Define the terms and classifications of teeth with cracks and fractures.
    • Give a clinical prognosis for teeth with reversible/irreversible pulpitis, necrotic pulp and a cracked marginal ridge.

    The diagnosis, treatment and prognosis of cracked teeth from an endodontic perspective will be discussed along with the definitions of terms. The diagnostic procedures and tests will be explained, and rationale and methodology used to gather the data will be presented with respect to pulpal and periapical diagnosis.

    One- to three-hour lecture.

  • Endodontic Instruments in the Operatory
    Topic: Nonsurgical Endodontic Treatment & Retreatment
    Learning Objectives:
    • Define a basic set of instruments appropriate for these procedures including diagnosis, emergency treatment, canal preparation, obturation and bleaching.
    • Describe the general physical properties of endodontic instruments and show how these characteristics are related to their use.
    • Describe the design (longitudinal, cross-sectional and tip configuration) of the more common canal preparation instruments and their mode of use.
    • Explain the basis for sizing and taper (standardization) of hand-operated instruments.
    • Describe proper use of instruments to prevent breakage within the canal.
      Recognize visible changes in instruments that will predispose to breakage.
    • Describe techniques used for sterilization and disinfection of instruments.
    • Select appropriate sterilization methods for each instrument type.
    • Identify procedures and chemicals that might cause deterioration of files and how to recognize it.
    • Describe and differentiate between conventional files and files of alternative designs.
    • Define the differences between stainless-steel and nickel-titanium intracanal instruments including physical properties and usage characteristics.
    • Describe the action and use of rotary instruments for cleaning and shaping canals.
    • Describe the current endodontic sealers available, obturation materials and systems, and know the “pros” and “cons” for each.

    This course covers the essential instruments needed to perform modern endodontic therapy. The instrument set-ups for the tray, hand files, and rotary and obturation instruments used to perform endodontic therapy will be presented. A balanced presentation of the pros and cons of various techniques will be discussed using the best evidence available in the literature. The length of time for the course can be adjusted according to the needs of the audience.

    One to two-hour lecture.


Dr. Krell has no proprietary, financial and/or personal interest pertaining to his presentations to disclose.

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