Full Service Dentistry for the Whole Family

At First Impressions Dental, Dr. Terry Trezek takes pride in offering a wide range of services that cater to all your oral health needs. We are always happy to help you achieve a healthy and beautiful smile.

Full Service Dentistry for the Whole Family

At First Impressions Dental, Dr. Terry Trezek takes pride in offering a wide range of services that cater to all your oral health needs. We are always happy to help you achieve a healthy and beautiful smile.

Years of Experience
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Patient Satisfaction
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5 Star Reviews!
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Meet The Doctor

Terry Trezek, D.M.D.

Dr. Terry Trezek received his bachelor’s degree from Southern Illinois University.  He obtained his Doctor of Dental Medicine degree in 2000 from Southern Illinois University’s School of Dental Medicine.  Dr. Trezek is a proud member of the International Association of Orthodontics, the International Congress of Implantologists, and the American Academy of Craniofacial Pain.  He is a certified Invisalign provider and is active in various local, state and national dental organizations.  Dr. Trezek continues to advance his education in dentistry by completing continued education coursework yearly and reinvesting in the latest technology to provide the best care possible.  
 

First Impressions Dental is one of few offices in the St. Charles County area to participate in the Pay It Forward Foster Care Program which helps children in the foster care system receive access to dental care services.

Our Services

From routine cleanings and exams to advanced treatments such as implants and cosmetic procedures, we strive to meet the diverse needs of our patients.

Tooth implant
Dental Implants

Experience a secure and long-lasting tooth replacement solution.

Dental crown and tooth
Same Day Crowns

Custom-fitted tooth prosthetics used to replace missing teeth.

3d render of tooth with endodontic file
Root Canals

Treat and preserve teeth with badly infected roots.

Invisalign braces
Invisalign

The trays are custom fitted to the teeth, making them unnoticeable.

Dental jaw
Dentures

Effective and an affordable way of replacing missing teeth.

Dental Inspection Mirror with Tooth
All Services

Learn more about our comprehensive dental services.

We are so excited to let you know that we have an in-office laboratory at First Impressions Dental! This means that we can offer you same-day crowns and bridges, which is super convenient for busy schedules. We're always looking for ways to make your experience with us as comfortable and efficient as possible.

Read What Patients Are Saying About Us!

Team - First Impressions Dental

If we’ve been fortunate enough to serve you at our location, why not share your own experiences? You can leave your testimonial on Google.

O'Fallon, MO

Troy, MO

2 Convenient & Accessible Locations

O'Fallon, MO

How Can We Help

Our mission is to offer exceptional dental care without causing any inconvenience to our patients. We have two readily accessible locations, so you can expect prompt and personalized services tailored to meet your needs efficiently.

Our approach is aimed at building a solid relationship with our patients through proactive communication channels that ensure every individual receives individualized attention.

Request an appointment for any of our locations from the comfort of your home. 

Request Now

Set up your patient portal to get valuable information at your fingertips.

Patient Portal

Complete our new patient registration forms to get a head start. 

Learn More

We’ve got you covered with some instructions to help you with your post-operative care. These tips will ensure that you have a speedy and comfortable recovery. Click on the link below to access the post-operative instructions.
 

Look for our new Troy location coming soon. Stay tuned for more information on when the new location will be opening!