About Our Dental Office Arlington Heights

Providing Outstanding Dentistry for Families Since 1966

With more than half a century serving the Arlington Heights community, our team is dedicated to continuing to build our legacy of quality care for patients of all ages. Our family of dentists and knowledgeable team work hard to make every patient we treat feel welcome, relaxed, and in good hands from the moment they walk through the door. That’s why so many of our patients have been coming to us since their very first checkup. Our dentists, Dr. Ernie Costello and Dr. Jay DeHart, take time to get to know every patient and work as partners with those they treat to ensure that every procedure is the right one for you. Contact our team to find out more today.

Our Mission & Core Values

Family of three smiling in Arlington Heights dental office


Mother carrying her young daughter on her shoulders

One reason Arlington Heights patients have trusted the Costello family with their oral health care for more than 50 years is that we’re committed to making our community a great place to live. From volunteering at community events and coaching local youth sports teams to hosting thank you events for our patients, we’re dedicated to giving back and showing our love and appreciation for Arlington Heights.


Patient in dental chair smiling at her dentist

People who work in our dental office have a deep-seated compassion for patients, co-workers, and the community. They are charitable and generous with their time, money, and talents. They exhibit an honest and empathetic approach to serving others, which is evident from the moment you arrive in our Arlington Heights dental office. They make every effort to create positive experiences by providing a listening ear, answering questions, addressing concerns, and offering encouragement to patients of all ages.


Senior woman smiling in dental chair

People in our dental office display a happy and grateful attitude, even in the face of daily challenges.  They are friendly and will offer encouragement – especially when they recognize the struggles of others.  They are willing to move forward, despite doubt or uncertainty, and they will do their best to elevate others for the betterment of their team. This is what makes being a part of our dental practice an enjoyable experience for everyone.

Team Players

Smiling young man in dental chair

In our dental office, we are engaged, respectful, flexible, collaborative, and receptive to constructive feedback. It is what helps us to grow in our skills, talents, and abilities to ensure everyone is delivering nothing but the very best. Team players place the needs of others before themselves, expecting nothing in return. This selfless approach allows individuals to embrace what real camaraderie means, witnessing its positive influence in the workplace.


Senior man smiling at his dentist

People in our dental office carry themselves with high esteem in appearance, demeanor, language, and communication. They are discreet when necessary and live by The Golden Rule: “Do unto others as you would have them do unto you.” Patients who visit our office can expect nothing but the best, which is clearly shown in how our dental team conducts themselves from the moment they walk through our doors.