

Our hope is that your family is happy, healthy, and confident with your smiles!
Our Dental Services

Invisalign®

Been told braces are your only option? We beg to differ. Straighten your smile with the most comfortable, discreet orthodontic technology.
Invisalign isn’t just about aesthetics; it’s about creating healthy, functional bites that allow patients to chew, speak, and live with confidence.
Our Founder, Dr. Cyndi Blalock DDS, is one of the country's greatest Invisalign talents. She serves as Faculty at Molis Coaching and led Cardinal Dental to Platinum Plus Invisalign Provider status.

Your dream smile might be closer (and clearer!) than you think. Book an appointment to discover what a more beautiful, better-functioning smile can do for you.
SMILES BY CYNDI: SIGNATURE service
Airway Therapy For All Ages
Sleep better, breathe better, live better :)
Learn more about Airway Therapy here.

Transform your appearance and boost your confidence with cosmetic dentistry services like professional teeth whitening, porcelain veneers, dental bonding, and complete smile makeover solutions.
Protect the health of your supporting bone and gum tissue with specialized periodontal services and effective gum disease treatment dedicated to maintaining your smile's longevity.



Straighten teeth and improve your bite (and maybe even breathing) with personalized treatments for efficient and comfortable teeth alignment. We have extensive expertise as an Invisalign Platinum Provider!
Restore natural beauty, function, and confidence with dental implants, crowns, bridges, and expert cavity repair after damage or decay.
From dental appliances for adult sleep apnea to pediatric sleep disordered breathing, Dr. Cyndi has extensive training in airway therapy to help improve tongue function, grow jaws through early orthodontics, and even release ties and restrictions with CO2 laser technology.
A WARM WELCOME FROM OUR FOUNDER

Dr. Cyndi Blalock is a gentle and talented dentist who stays at the forefront of modern dentistry.
She is an industry leader, educator, and advocate for wellness who has been nominated as one of America's Best Dentists. Dr. Cyndi got into dentistry to transform lives - one smile at a time.

Passionate about creating healthy, functional bites and transforming smiles with Invisalign, Dr. Cyndi has led Cardinal Dental of St. Peters to Platinum+ Invisalign status. She serves on the faculty at Molis Coaching, the industry standard for Invisalign training and expertise.

Dr. Cyndi Blalock is exceptional with children and families. A graduate of Tongue Tie Academy, she has advanced laser tongue tie training and can leverage airway therapy treatments to improve the quality of life for infants, children, and their families.



Great experience every time I go.
Front desk staff is very welcoming. Hygienists are all knowledgeable and caring. Dr. Blalock is so nice, makes sure she sees her patients in a timely manner, and even sings to you sometimes.

Absolutely amazing experience!
Super friendly for my young toddlers and very supportive of me trying to handle them all during the appointments. Dr. Even took my kids who weren't getting their cleaning on an "adventure" to help make sure everyone was getting what they needed. Dentist was great with the kids and informative on things that were concerning to me. Love Cardinal dental for my family!

Best dentist I’ve ever been to.
Everyone is super friendly! Everyone is sooooo friendly and make you feel like you’re their family💜 100/10 recommended ! Thank you so much

I am glad I was recommended this office.
Cardinal Dental has been my one stop shop for anything to deal with my teeth. Everyone there is charming and professional and it is credit to their continued work towards excellence.

The individuals who work here are amazing.
I haven’t went to the dentist in over 6 years and I was terrified to go. I must have asked a million questions to my dentist and technicians, they answered all of them and broke it down for me to understand. They even had enlarged pictures of my x-rays to really explain what they were talking about.
The front desk and billing section was painless as well. They answered it all and it really felt like they cared (they did).

Most places say they will go above and beyond. No one is going to beat this one.
I took my daughter here for an Invisalign appointment today. I was so impressed with the staff and this doctor that I will be moving my entire family to utilize the full dental services that are offered here.
Too many things to mention- taking the extra time, the entire staff incredibly knowledgeable, everyone is friendly and truly cares and values your time and who you are as a person. They make you feel good and you actually want to go back….. to the dentist!! I would rate more stars if I could. Thank you Dr. Blalock for taking exceptional care of my daughter today. We will be back soon.

We simplify complex dental challenges with the latest technology and genuine care.

Dr. Blalock and her entire staff are PHENOMENAL.
They create such a fun, relaxed, and welcoming environment. They work hard to make sure your kiddo (or the adults as well!) feel comfortable and calm, making adjustments as needed. We live 45 minutes away from the office but I find it 100% worth the drive for such outstanding care!


This beautiful transformation is more than just teeth. Our patient came to us with a deep bite that wasn’t just affecting her smile—it was affecting her airway. After completing Invisalign treatment, she told us she’s sleeping better, breathing easier, and finally feeling rested when she wakes up.
That’s the power of a healthy bite. Form meets function. Beauty meets breath.

Transforming smiles, one bite at a time! This incredible case highlights the power of Invisalign to correct a posterior cross bite - in just 12 months!
By using clear aligners, we were able to guide this patient’s teeth into proper alignment, improving not just their smile but also their function and long-term oral health.
Wherever you are on your journey, we can help :)


Cardinal Dental of St Peters
Gentle dental care for kids, teens and adults
1400 Triad Center Dr
St Peters, MO 63376, United States