Andover (763) 434-5868

Anoka (763) 427-2740

Blaine (763) 757-2768

Coon Rapids (763) 757-7540

Elk River (763) 253-7531

Saint Francis (763) 757-2768

Practice History

The orthodontic practice of Doctors Rensch, Becker, Carlson, and Ackermann began in 1966 when Dr. Dennis R. Carlson opened the first orthodontic office in Anoka, Minnesota. Dr. Leonard V. Ackermann joined the practice in 1970. The practice grew steadily and with many patients coming to the Anoka office from Elk River, Zimmerman, Princeton, Rogers, St. Michael, and Big Lake communities, Drs. Carlson and Ackermann opened a second location in the Elk River office of Dr. Tony Jarmoluk in 1972.

The practice continued to grow and in 1975 Drs. Carlson and Ackermann opened a third office in the Osage Professional Building in Coon Rapids. The location of this office, within walking distance of Coon Rapids Middle School and Senior High School, made appointments more convenient for the patients from Coon Rapids.

In 1980 the Anoka practice moved into the present location at 402 Monroe Street. This office proved to be convenient for patients from Anoka Middle School as well as Lincoln, Washington, and St. Stephens Schools.

In 1996 Dr. Scott E. Rensch joined the practice adding his talents in orthodontic treatment and patient care. Dr. Rensch eventually became the owner of the practice.

In 1999 Dr. William S. Becker joined the practice offering his expertise to an ever growing number of patients, both children and adults. Dr. Becker is now co-owner of the practice with Dr. Rensch, and the legal name of the practice is Drs. Rensch, Becker, Carlson, and Ackermann, D.D.S., P.A. This practice arrangement has proven to be very positive in that it provides the doctors with the opportunity for consultation with each other regarding orthodontic diagnosis and treatment plans.

In 2004, we opened an office in Andover, across Hanson Boulevard from Oakview Middle School.  It has made it convenient for patients in the growing Andover community.

In 2013, Dr. Ackermann retired and in 2014 Dr. Carlson retired.  They will be missed by many!

In summer 2014, Dr. Kyra Iwen joined the practice. 

Over the years the practice has been fortunate to attract talented staff members in all areas including business office, secretary-receptionist, and orthodontic assisting. An important characteristic of a quality orthodontic practice is the permanence of the staff. The practice has had a very low staff turnover rate. Two orthodontic assistants, one receptionist, and one buisiness office staff have served over 20 years, and more staff members will reach that landmark relatively soon. This is especially nice for our patients who get to see familiar faces at their appointments and as often happens, become friends with staff members. Our practice has been fortunate for the opportunity to now treat second generation family members.

An orthodontic practice is somewhat unique as a health profession in that because treatment lasts up to two years, we get to learn more about our patients, their interests and abilities, their accomplishments and aspirations. This makes our work enjoyable.

The doctors and staff regularly attend continuing education seminars to remain up to date on all new developments in the orthodontic profession. The ultimate purpose of an orthodontic practice, and our mission, is to provide quality treatment in a safe, comfortable manner, in a friendly environment, using the newest appliances, instruments and techniques. Our commitment is to maintain high standards, to serve our patients in the most professional manner, to make the orthodontic experience something the patients will remember in a positive manner, and to give them results that they will treasure.

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