Welcome to Saint Louis South Orthodontics
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Led by Dr. Senthil N. Arun, we provide advanced orthodontic care for patients of all ages in St. Louis, Missouri. From traditional braces to Invisalign® clear aligners, our team creates personalized treatment plans to match your unique smile goals. With state-of-the-art technology like the iTero® digital impression system, we ensure precision, comfort, and lasting results. At Saint Louis South Orthodontics, you’re more than a patient—you’re family. Schedule your complimentary exam today and start your journey to a confident smile!

Our Next-Level Orthodontics, Powered by Innovation

At Saint Louis South Orthodontics, we use cutting-edge tools like the iTero digital scanner to create precise 3D models—no messy impressions needed. Our advanced Invisalign treatment offers a comfortable, clear, and removable way to straighten your smile.

Invisalign Clear Aligners

Invisalign®

Invisalign straightens your teeth using a series of customized, removable, clear plastic appliances called aligners.

3D Modeling

3D Modeling

Instead of making impressions of your teeth with sticky putty, we have the technology to make 3D models.

iTero

iTero®

We utilize the latest technology, such as the iTero digital scanner, in order to provide the very best care available.

DR.Arun

“Orthodontics is a dental specialty that is concerned with the study and treatment of malocclusions (improper bites), which may be a result of tooth irregularity, disproportionate jaw relationships, or both. My passion for being an orthodontist and creating artistic smiles is amazingly rewarding as the result of orthodontic treatment restores confidence and self-esteem.”

- Dr. Arun

BDS, DMD, MSD, PhD | Specialist in Orthodontics
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Excellence in Every Smile.

At Saint Louis South Orthodontics, we combine advanced technology with personalized care to create confident, beautiful smiles.
From digital scans to clear aligners, every detail is designed with your comfort and results in mind.

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Our Office

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Patient

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Treatment

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MISC

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25

Years of
combined experience

Our team is dedicated to delivering high-quality dental care that you can trust.

15k

Happy
patients

Join our community of patients who have experienced the exceptional care that sets us apart.

What Our Client Are Saying

Real experiences from patients who trust us with their smiles. Here’s how we’ve made a difference in their dental journey.

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Exceptional service from start to finish! The front desk staff is always warm, welcoming, and incredibly helpful, making every visit stress-free. The dental assistants are truly phenomenalprofessional, caring, and attentive to every detail of my treatment. I feel confident and comfortable each time I walk in. I will always recommend South Orthodontics to anyone looking for outstanding orthodontic care.

Melinda Armstrong

Business Consultant

Dr. Arun & Brii were really professional and great! I would recommend South Orthodontics to my family and friends! Oh, I can’t forget about Jenny is the life of the office. She will go above and beyond for you! I love her so much!!

Monica Lee

Consultant

OUR BLOG

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STL South Orthodontics

Stay informed with helpful tips, treatment insights, and the latest advances in orthodontic care. Our posts are designed to support your journey toward a healthy, confident smile.

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