Dr. Dennis Hartlieb is a graduate of the University of Michigan School of Dentistry. He maintains a full time practice in the Chicago suburb of Glenview, Illinois. 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. He lectures extensively to dentists throughout the US on the art and science of anterior and posterior direct resin techniques.
As a consultant for many dental manufacturers, Dr. Hartlieb is influential in the design of materials widely used in restorative dentistry. His dentistry has been seen in many dental publications and he has contributed articles on his techniques in restorative dentistry. Dr. Hartlieb is a member of the prestigious American Academy of Restorative Dentistry, the American Dental Association, and the American Academy of Cosmetic Dentistry. He is also president of the Chicago Academy of Interdisciplinary Dentofacial Therapy, and officer for the Chicago Academy of Dental Research study club.