About Drs. Sellke, Reily and Kats | Antioch, Grayslake and Gurnee Orthodontists | Orthodontic Specialists of Lake County

Meet our doctors

Our orthodontic specialists, Dr. Terry Sellke, Dr. Donald Reily and Dr. Olga Kats, provide high-quality orthodontic care to our patients at our offices in Grayslake, Antioch and Gurnee, Illinois. We invite you to learn more about the orthodontic treatments we offer and contact us today to schedule an appointment. We look forward to meeting you!

Our doctors

Dr. Terry Sellke

Dr. Terry Sellke | DDS, MS

Born in Chicago, Dr. Terry Sellke is a native Illinoisan. His fervor for Illinois extends to his academic background, having enrolled in the University of Illinois undergraduate and dental school. He graduated with his Doctorate of Dental Surgery in 1971. Two years later, he achieved a specialty degree in orthodontics. In 1974 he received a Master’s degree in orthodontics, the same year that he opened the first office of what was to become Drs. Sellke and Reily, Ltd, later known as the Orthodontic Specialists of Lake County.

In 1980, Dr. Sellke became a Diplomate of the American Board of Orthodontics. He teaches orthodontics at the University of Illinois College of Dentistry, where he earned the titles of professor, master clinician, co-clinic director, and master’s thesis advisor. Dr. Sellke lectures globally on clinical orthodontics as well as another of his passions, applying business principles to the practice of orthodontics.

Dr. Sellke’s professional affiliations include:

  • Illinois Orthodontic Alumni Association, Board of Directions, Past President
  • Lake County Board of Health, Past President
  • Foundation for Orthodontic Research, Board Member, Past President

Dr. Sellke was elected to the American College of Dentists by his peers and has been a reviewer for the American Journal of Orthodontics for many years. He has published dozens of articles on orthodontics in professional journals worldwide. His text on the Bioprogressive Orthodontic Philosophy has been translated into four languages.

Dr. Sellke’s hobbies include golfing, traveling, hiking, swimming and spending time with his family. He has two children named Kirk and Kristin, and three grandchildren, Gracie, Maddie, and Clyde. He lives in Libertyville along with his dog, Samson, a six-pound Maltese Terrier, who has him wrapped around his paw.

Dr. Donald Reily

Dr. Donald Reily | DDS, MS

Dr. Donald Reily has a passion for his work and orthodontics! As one of his patients, you’ll be comfortable with his easy-going nature, sense of humor and encouraging attitude. Dr. Reily enjoys encouraging children and young adults in their pursuit of a career in dentistry.

Dr. Reily is a native of Des Plaines, IL and attended Elk Grove High School. By junior year, having worn braces himself, he realized that an orthodontic career offered an exciting opportunity to combine his interests in art and science. His dream was soon realized while working as an orthodontic laboratory technician, where he met Dr. Sellke. A long-time personal and professional friendship ensued and the rest is history. Dr. Reily completed his undergraduate education at Loyola University in 1975. He received his orthodontic training at the University of Illinois, where he graduated with honors in 1979. He continued on at Illinois, receiving his specialty and Master’s degree in 1982.

Since graduation, Dr. Reily continues to attend numerous courses and seminars on the practice of orthodontics. He has, like Dr. Sellke, served in all offices of the Lake County Dental Society. Both are members of the American Dental Association, the Illinois and Midwest Orthodontic Society, the American Association of Orthodontists, and the Illinois Orthodontic Alumni Association.

When he’s not having fun straightening teeth you can usually find Dr. Reily bicycling or celebrating special occasions with his large, extended family. Among his many interests are nutrition, exercise, yoga, hiking, traveling, reading and live theater.

Dr. Olga Kats

Dr. Olga Kats | DMD, MS

Dr. Kats’ family moved from Russia to Illinois when she was seven years old. She found a love of dentistry early in life after her own orthodontic treatment. She decided to attend the University of Illinois at Chicago for her undergraduate degree while she worked at an orthodontic clinic. Dr. Kats continued at University of Illinois at Chicago for her dental school education. She did her orthodontic residency at University of Minnesota because she was impressed by the school’s focus on innovative technology and the future of orthodontics.

She prides herself on her desire to push the envelope of what can be done in orthodontics and her ability to build a rapport with patients, something she considers important to her practice. Dr. Kats feels at home at Orthodontic Specialists of Lake County because of their patient-centered approach and commitment to embracing the latest innovations in orthodontic treatment.

When she is not treating patients, Dr. Kats enjoys spending time with family and friends, she has a love of nature and enjoys outdoor activities like rollerblading and hiking. She also loves to travel and learn about other cultures (Dr. Kats speaks Russian), exploring anywhere and everywhere and considers herself a citizen of the world.

Your Illinois specialist orthodontists

Our orthodontists enjoy keeping up to date on cutting edge orthodontic technologies and are excited to share that with you. If you want to learn more about orthodontic care for adults or children, contact us today for your free consultation.

Book your consultation at the Orthodontic Specialists of Lake County.

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Your Illinois specialist orthodontists