Our Office

About Us

First Class Smiles is the oldest continuing dental practice in Des Plaines. It was originally started by Dr. John M. Hannon after he graduated from Northwestern Dental School in 1935. He practiced near the Des Plaines Theater on the upper floor and across the hall from Dr Fahey, the founder of Fahey Medical Clinic. Dr Hannon was drafted during the war and then returned to Des Plaines. In 1950, he built a new office at 779 Pearson St.

Dr. Hannon practiced quality dentistry for generations of Des Plaines folks. In 1980, at the age of 70, Dr Hannon happily retired and asked Dr. Barry to continue his practice. Dr. Barry was Dr. Hannon’s dentist.

In 1996, the old building was sold and necessitated a move to the old O’Brien’s Florist space at the corner of Graceland and Prairie. The name of the practice was changed to First Class Smiles in 2010 with the addition of two associates. The name conveys location and our emphasis on natural solutions and concern for the environment. We continue the tradition of helping the patient through their dental work and delivering high quality results. The history of this practice spans more than 70 years, to all original patients from Dr. Hannon to Dr. Barry since 1980 and now to Dr. Grandinetti.


Dr. Grandinetti and his associates are a one stop operation. The patient can conveniently receive all their dental work at our office. First Class Smiles works with an outstanding team of specialists should a patient need their services.

At First Class Smiles we provide quality fillings, crowns, root canals, sleep apnea solutions, sedation, and periodontal work. We also provide a whole gamut of implant solutions for our patients. Our focus is to offer the patient our best suggestions and let them decide which avenue to take.

Scheduling Appointments

To make an appointment, simply call us or click here to Request an Appointment online.

Payment Options

We accept Mastercard, Visa, American Express and Discover credit cards as well as cash and personal checks. We accept Dental PPO insurance plans and are in-network with most of them. To find out if we accept your plan, please call our office.

Convenient Location

Our office is located at 685 Graceland Ave, Des Plaines, IL 60016 with ample parking in our lot at the North end of our building (parking is also available out front).