Dr. Dennis Hartlieb completed his undergraduate and dental school studies at the University of Michigan (University of Michigan School of Dentistry 1988). He maintains a fulltime practice in the Chicago suburb of Glenview, Illinois, focusing on esthetic and restorative treatment. Dr. Hartlieb is an instructor at the Center for Esthetic Excellence in Chicago and is an Adjunct Associate Professor at the Marquette University School of Dentistry in Milwaukee, Wisconsin.

Dr. Hartlieb is a member of the American Academy of Restorative Dentistry, the American Dental Association, the American College of Dentists, the American Academy of Dental Sleep Medicine, and is an Accredited member of the American Academy of Cosmetic Dentistry. Dr. Hartlieb is also Accreditation Examiner for the American Academy of Cosmetic Dentistry.

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