Why Choose Us


Not all dentists that provide braces are orthodontists.  All three of the doctors in our office have completed an additional two years of specialty training in orthodontics after the standard dental school training, to become specialists in the field of orthodontics.  Our doctors have earned Certificates in Orthodontics, as well as Masters of Science (M.S.) degrees.

Board Certified

Not all orthodontists are board certified.  All three of our doctors are board certified by the American Board of Orthodontics, the only certifying board recognized by the American Association of Orthodontists and the American Dental Association.  Our practice is the only one with three board certified orthodontists in a five state region (Montana, Wyoming, Idaho, North Dakota and South Dakota).

What is a board certified orthodontist?

A board certified orthodontist has successfully passed a thorough written exam, as well as presented their treatment cases in front of expert examiners.  A board certified orthodontist has shown that they are committed to proficiency and excellence in their field.


All of our doctors offer something a little different.  For example, Dr. Kastrop serves as a director of the American Board of Orthodontics and he will serve as president in 2013.  In addition, Dr. Marlene is the only board certified female orthodontist in the state of Montana!  Finally, Dr. Adam has several studies published in the profession's top journals, including the American Journal of Orthodontics and Dentofacial Orthopedics and The Angle Orthodontist.

Cutting Edge

The doctors at Ostby Orthodontics are devoted to providing the best possible patient care, and it a priority for them to stay current with advances in the field of orthodontics.  Our practice uses some of the newest technologies, including indirect bonding, digital models and computer simulated treatment projections, to provide our patients with the highest quality of care.  Additionally, Drs. Adam and Marlene have had extensive training in using orthodontic mini-implants and have taken advanced courses in Invisalign® clear aligners.


See what patients are saying about us here:  http://goo.gl/oXmDP, or browse the "See Our Smiles" tab above to see some of our amazing smile transformations.  You can also become a fan of the Ostby Orthodontics page on Facebook to view more of our beautiful patient smiles.

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