Terry M. Trezek, DMD

First Impressions Dental - O'Fallon Location

Dr. Terry Trezek has been practicing in the community since 2000. The primary goal of First Impressions Dental is to provide you with the highest standard of care possible in a comfortable and relaxing environment. This standard refers not only to the health care provided, but also to the quality of service given to each patient. Patients are extending a great deal of trust in us as professionals, so it is only fitting to return the favor by giving 110% to each patient that enters the practice. At First Impressions Dental we will educate the patient utilizing the best and latest diagnostic technology and treatment modalities offered. When you visit First Impressions Dental you will experience all that modern dentistry has to offer, including a comprehensive list of general, restorative and cosmetic dental services to meet the needs of the entire family. Our goal is to assist each patient in achieving and maintaining long term dental health and a beautiful smile by building lasting relationships. Patient care is our top priority at First Impressions Dental and we look forward to serving you!

First Impressions Dental - O'Fallon Location is open Mon: 8-5, Tues: 8-5, Wed: 7-5, Thurs: 8-5, Fri: 7-2

Our plan is designed to provide greater access to quality dental care at an affordable price.

  • No yearly maximums.
  • No deductibles.
  • No claim forms.
  • No frequency limits.
  • No pre-authorization requirements.
  • No pre-existing condition limitations.
  • No one will be denied coverage.
  • No waiting periods (immediate eligibility).

For More Information

Call Us or Click HERE to download our PDF signup form

About Our Plans

The Smile Advantage Plan is a membership-based dental savings plan, for patients without insurance, that provides the quality care they deserve at a price they can afford. Members pay an annual fee to receive regular exams, cleanings and X-rays along with access to significantly reduced rates on all other restorative and cosmetic dental procedures performed in our office. Plus, the plan offers many benefits including no annual caps, no limits, and no waiting periods. This provides for quick access to the care you need!



Starting proper dental hygiene habits at a young age is especially important for children. Early detection of decay and developmental problems is key to avoiding more extensive and costly treatment. Over time, regular visits provide an opportunity for the dentist and hygienist to build a connection and establish trust while promoting healthy hygiene routines. The Smile Advantage plan is an affordable means to provide quality preventative care for your child!


  • “I always have a pleasant experience going to First Impressions Dental. Office is very prompt. Never a long wait and staff is very professional and friendly. Dr. Trezek always takes time to see patients after cleanings. Simply a wonderful experience each time I go.”

    Randy W.

  • “My family and I can always trust Dr. Trezek's suggestions & recommended treatments. The office is extremely friendly and we appreciate their up-front approach to our dental care. ”

    David T.

  • “My daughter went down a slide at school and bumped her mouth on the slide going down, the tooth was shoved up into her gum, we came to First Impressions and Had an X-ray that confirmed what I had thought, I was so impressed with how quickly Dr. Trezek was able to get her tooth out, and he was so good with her! Everyone was so nice from the time we arrived until we left! Thank you First Impressions Dental for taking such great care of my daughter!”

    Sabrina W.


  • Up to 2 Exams, Routine Cleanings & Necessary X-Rays
  • Up to 2 Fluoride Treatments When Indicated
  • 15% Discount on All Other Dental Treatment
  • Perio Plan - Up to 4 Perio Maintenance Cleanings, 2 Exams & Necessary X-rays
  • 1 Limited Exam & Necessary X-rays
  • 1 Orthodontic or Cosmetic Consultation
  • $500 Off Orthodontic Treatment
  • $400 Off Sleep Apnea Appliance
  • Take Home Whitening – Only $99
  • Program exclusions and limitations:

    This is a savings plan, not dental insurance. It cannot be combined with any other insurance or discounts. It is only valid at participating locations; care from other providers and specialists is not included. Plan fees are subject to change. For complete details, see Plan Agreement or Plan Terms and Conditions.

    (The illustration includes services offered at First Impressions Dental - O'Fallon Location. Plan inclusions may differ slightly from one participating office to another.)

    Click to Learn More

    Are You




    The Smile Advantage Plan is a great alternative to traditional employer-paid dental health plans. Save money and retain your employees by providing this comprehensive option to your team.

    Frequently Asked Questions

    Why do you offer the Smile Advantage Plan?
    Over the years, we’ve found that more and more of our patients are choosing not to visit their local dental offices due to expensive fees and a lack of employer-provided dental health coverage. Routine exams and basic cleanings at the dentist’s office can prevent most oral health problems from arising and can even prevent other serious and life-threatening systemic health concerns from developing.
    Do I have to be an existing patient?
    No. The plan is open to new and existing patients of the offices we serve. We are accepting new patients to the savings plan.
    Are there any family discounts?
    We currently do not offer any family plans. The adult and child pricing plans are specifically designed to provide the best savings possible while providing the necessary preventative care each person deserve.
    My employer suggested I take advantage of the plan. Now what do I do?
    If you are applying for Smile Advantage through an employer-supported promotion, the process remains the same. Simply DOWNLOAD and complete the official forms.
    How do I apply?
    If the benefits of the Smile Advantage Plan make sense for you, simply download our contract HERE. Please complete the form and submit to First Impressions Dental - O'Fallon Location.