About Schaumburg Smiles

Get to know our practice

Serving up smiles since 1976

Schaumburg Smiles is a long-standing part of this community. For over 47 years, we’ve made going to the dentist an easy, enjoyable experience. Our practice welcomes patients of all ages and backgrounds. Wherever you are on your dental health journey, we’ll meet you there and provide the highest quality care.

Book online today and see for yourself why we’ve been the area’s trusted dentist for so many years.

team portrait of schaumburg smiles
beautiful smiles schaumburg smiles dental care

“Our team wants to give you a lifetime of oral health and the beautiful smile you’ve always wanted!”

— Dr. William Hardenbergh

Dr. William E. Hardenbergh

Originally from Grand Rapids, MI, Dr. Hardenbergh moved to Chicago in 2019 and found his way to the Schaumburg community in 2021. He’s proud to continue the great reputation of our practice founder, Dr. Harry Kiriluk.

Dr. Hardenbergh is dedicated to providing personalized, high-quality dental care to all patients. He’s excited to bring CAD/CAM technology to the office in the form of a digital scanner that delivers perfectly fitted crowns and extra strong fillings in just one appointment.

He’s a certified Invisalign provider and an active member of the American Dental Association, Illinois State Dental Society, Chicago Dental Society, and CEREC Doctors.


  • University of Michigan, B.S. in Biology
  • Tufts University School of Dental Medicine, D.M.D.

Out and about in Schaumburg

  • Spending time with his wife, Jennifer, and their dog, Cooper
  • Golfing at Mount Prospect Golf Club or Arrowhead Golf Club
  • Wandering the aisles at Costco

Dr. Harry Kiriluk

Dr. Kiriluk was an honors graduate of the University of Illinois. He received his B.S. in Biology from Champaign and D.D.S. from the UIC Medical Center. He has been on the faculty of the University of Illinois School of Dentistry and is a director on the University of Illinois School of Dentistry Board of Alumni.

He has taken additional training in TMJ therapy, endodontics, periodontics, orthodontics, oral surgery, restorative and cosmetic dentistry, and is Invisalign and Clear Correct certified.

He is a member of the American Dental Association, Illinois State Dental Society, Chicago Dental Society, United States Dental Institute, International Association for Orthodontics as well as various dental study clubs.


  • University of Illinois, B.S. in Biology
  • UIC Medical Center, D.D.S.

Meet Our Team

Diana P.


I have been working as an assistant since 2021. I was interested in dentistry because I admire how people sometimes arrive at the office in pain or not feeling great but then leave feeling happy and with a big smile. The best thing about being part of a family practice is that I meet a patient and within a couple of days, meet the rest of their family.

I was born and raised in Hoffman Estates and In my spare time, I love spending time with BeBe, my 9 yr old morkie, and Loba (wolf), my huskie. My family is my center and being here at Schaumburg Smiles has made me feel at home.

$99 new patient special

You’re in great company

“Dr. Hardenbergh explained my treatment options and answered all my questions. Appointments run on time and they never leave me waiting.”

— Stephanie H.

“The best experience. Thoughtful, caring, and most importantly they all make you feel welcome. A great dentist!”

— Mike

“As a new patient, I felt like one of the family. It was a comfortable and painless cleaning and filling. I will be bringing the rest of my household here for all our dental needs!”

— Charlene G.

Our Office

1622 E Algonquin Rd.
Suite C
Schaumburg, IL 60173

Get Directions

Monday: 10am – 2pm (office hours only)
Tuesday: 8am – 5pm
Wednesday: 8am – 5pm
Thursday: 8am – 3pm
Friday: 8am – 3pm

Get Started Today

Take advantage of our $99 new patient special. Book online or call us at (847) 397-7161.