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River City Endodontics

Quincy, IL

Our Mission

At River City Endodontics, our Mission is simple: to provide you with the finest endodontic treatment available anywhere. Our "make no compromises" philosophy places our practice in the top 1% of endodontic practices, nationwide. 

Our endodontic practice employs many features that are now considered the "standard of practice" in terms of endodontic specialty care. 3D imaging modalities are a must in today's world of endodontics. Latest models of Global Microscopes are featured in each operatory. Customized ASI delivery carts are used to complete each and every case efficiently but also to perfection. It is also worth mentioning Boyd Industries Dental Chairs that feature memory foam for maximum patient comfort.

Clayton Liesen, DMD, MMSc is known for his commitment to excellence.


Dr. Liesen was born and raised locally. From a small local town to Endodontics Residency at the Harvard School of Dental Medicine, Dr. Liesen has not forgotten his roots and the great need for endodontics in this area.