Photograph from several decades ago of father and son in forest pointing to trees Three Arlington Heights dentists smiling in dental office
Trusted By Local Families Since 1966

Deeply Rooted in Arlington Heights

Our dental practice near you was started by Dr. Ernie’s father over 55 years ago, and today, we often find ourselves taking care of four generations of the same family! From essential preventive care and dental implants to cosmetic dentistry, we’ve earned people’s trust year after year and decade after decade because we love what we do and who we serve (and it shows).

Explore Our History

Aerial view of Arlington Heights Illinois Three smiling dentists in suits
Dental team member talking to a patient

Dentistry with a Mission

Our Core Values

Icon of two people holding hands with heart between them Caring

We treat our patients the same way we would our family and best friends. You’re a person before you’re a patient, and we never forget this.

Stick figure next to checklist iconPositive

Going to the dentist can be stressful for some, but we keep things light and upbeat even when it’s not easy to do so.

Handshake iconTeam Players

You’ll never talk to a team member who doesn’t know who you are. Together, we’re able to consistently deliver exceptional care and service.

Star ribbon iconProfessional

We consider all of the details so you don’t have to. From our appearance to our communication to your treatment, our dedication to quality will be obvious.

Dentists, Dads, & Determined

Always Growing, Always Striving

Sure, Dr. Ernie and Dr. DeHart can enhance your smile with veneers, straighten your teeth with Invisalign, or get you out of pain with TMJ treatment. However, this is not their primary goal—it’s just where they begin. Their top priority is to become an advocate you and your family can rely on for years to come. Whether you have major issues or just want routine care for you and your loved ones, you can count on them to answer all your questions and serve as your guide toward the bright, beautiful, and healthy teeth you deserve.

Meet Our Dentists

Arlington Heights Illinois dentists Doctor Ernie Costello and Doctor Jay DeHart Dr. Ernie Costello Dr. Jay DeHart
Collage of dental team members volunteering with text that reads nominate a veteran for a smile makeover click here to learn more
Branching Out into Our Community

We Love Giving Back to Arlington Heights

From coaching Little League to visiting schools to donating free dentistry to underprivileged families, we go above and beyond to help our friends and neighbors. Looking after people beyond the walls of our dental office in your area has been important to us for the entire 55+ year history of our practice. We wouldn’t be where we are today without the support of the community, so we believe it’s our duty to support it back.

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Leaves of Many Colors

We Got You Covered

House icon All Under 1 Roof

You’ve found your dental home. We can provide everything from the basics to Invisalign, dental implants, and more.

Icon of parents holding hands with their child Entire Families Welcome

Many of our child patients now bring their own children or even grandchildren to come see us!

Shield with plus sign icon Same-Day Emergencies

If you’re caught off guard by a toothache or sustain a dental injury, we won’t make you wait to get the relief you deserve.

Analog clock icon Open Late & Saturdays

Life is busy, so we make it easy to come see us without having to rearrange your entire schedule.

Dental team member walking down hallway with senior man

Reviews & Testimonials

The Fruits of Our Labor
Arlington Heights dental patient Jessy

“I decently chipped my two front teeth last week and though the office was closed, Dr. DeHart responded fast and was able to fix my teeth within hours. Everything was done very gently and all of my questions were answered thoroughly, which meant a lot to me especially in my panicked and injured state. My teeth look amazing and I have never had anything but amazing experiences here. Thank you again!!”

Jess Y.
Arlington Heights dental patient Brian
Brian's Story
Arlington Heights dental patient Janelle A

“This was a professional and expert dentist experience that had had a profound impact on my life. I was treated with upmost patience, kindness, and professionalism. I was given time and care that I would’ve otherwise never been able to afford. This was much needed, but not required help to a veteran. It absolutely has changed my physical health and improved my life for the better. I’m beyond grateful for the Dr. J, his partner and his amazing staff.”

Janelle A.
Senior man talking to receptionist in Arlington Heights dental office

Dental Insurance & In-House Savings Plan

Transparent & Affordable
Dental Care

For patients with dental insurance, we will work with you and your plan to maximize your benefits at every opportunity. If you do not have dental insurance, our in-house plan can make exceptional dentistry easily affordable for you as well as your loved ones.

Find Your Dental Insurance
Join OUr In-House Saving Plan

Conveniently Located Near You

Located in the heart of Arlington Heights, you can find our nearby dental office on the NW corner of N Arlington Heights Road and Thomas Road. We’re across the street from Thomas Middle School and North Arlington Pediatrics, and we're right next to Glueckert's. From all of us at Costello & DeHart Dental Excellence, we can’t wait to be your family’s home for dental care!

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