Dr. Theo Mantzikos (SID 308500)

Blending state-of-the-art technology and personalized care, the boutique offices of Dr. Theo Mantzikos are some of the most comprehensive and experienced orthodontic practices, specializing in braces and Invisalign® treatment for children, teenagers, and adults.

From your complimentary initial exam and consultation to the development of a fully customized treatment plan, our approach is designed to meet your individual goals. We also offer private in-office or virtual consultations upon request, providing a seamless experience tailored to your preferences and lifestyle.

We offer a range of orthodontic services tailored to meet your individual goals and needs. With every treatment we perform, we do so with compassion and respect. Our orthodontic services include:

Invisalign® Aligners: We provide custom-made, clear aligners that gently and discreetly straighten your teeth.
Braces: Our traditional braces correct alignment issues, offering a time-tested solution for a straighter, healthier smile.
Teeth Whitening: Brighten your smile with our professional teeth whitening treatments designed to safely remove stains and enhance the natural beauty of your smile.

At the office of Dr. Theo Mantzikos, we're committed to helping you achieve the straight, healthy, and confident smile you've always wanted through personalized orthodontic care. Dr. Mantzikos and his team warmly welcome patients from the following locations:

Greenwich, CT, including Greenwich proper, Byram, Riverside, Cos Cob, and Old Greenwich, along with the surrounding communities of Lower Fairfield County (Stamford).
Westchester County, NY, including Purchase, Rye, Rye Brook, Harrison, White Plains, Scarsdale, Mamaroneck, and Larchmont.

Your trust means everything to us, and we work hard to earn it, visit after visit. Our practice offers flexible appointment scheduling, including early morning, evening, and weekend availability. If you're looking for an experienced and skilled orthodontist, call us today!

Dr. Theo Mantzikos is a Diplomate of the American Board of Orthodontics practicing in Greenwich, CT & Westchester, NY with over 30 years of experience in private practice and in academia teaching orthodontics.

Knowledgeable, empathetic, and an effective communicator, Dr. Mantzikos is a respected and "trendy" doctor who combines medical expertise with strong interpersonal skills and a commitment to patient well-being.

To his patients, he’s not just an orthodontist—he’s a source of positivity, kindness, trust.

His passions are the Arts, Culture, Film, and Fashion….Walking the streets of New York City….

If you're considering a straighter smile without the use of braces, Invisalign clear aligners might be the right fit for you.

At the offices of Dr. Theo Mantzikos, he offers customized Invisalign treatments designed for teens and adults who want to improve mild to moderate misalignment comfortably and discreetly.

Whether you're preparing for a big life event or simply want to feel more confident about your smile, Invisalign aligners offer a flexible, low-profile alternative to traditional orthodontics.

At our practice, we offer both metal and clear braces to help guide your teeth into alignment and give you the confident smile you deserve.

Metal Braces

The most common and reliable option
Smaller, more comfortable, and customizable with color bands
Uses wires, brackets, and elastics to gently move teeth into place

Clear Braces

Made of ceramic or composite materials that blend with your teeth
Less noticeable, ideal for patients who want a discreet option
Works just like metal braces but with a more natural look

No matter which type you choose, both options are safe, effective, and designed to fit your lifestyle.

Now, you not only get straight teeth but whiter teeth thanks to Invisalign! Invisalign Professional Whitening System powered by Opalescence whitens your smile while your Invisalign is straightening it! The Invisalign Professional Whitening System is made to work with Invisalign aligners or Vivera retainers to bring you a gorgeous, whiter smile you’ll be pleased with.

Dr. Mantizkos is both an Invisalign® and Invisalign® Teen provider and is now a proud provider of the Invisalign® Professional Whitening System. Invisalign is a great option for most persons, but it doesn’t work in all situations. However, the Invisalign Professional Whitening System can work as a stand-alone, so you don’t have to be in Invisalign treatment to enjoy beautiful, whiter teeth!

Discreet treatment

People won’t even know you’re whitening your teeth, thanks to the discreet look of Invisalign and Invisalign Professional Whitening System! Imagine whiter teeth without the strips!

Treatment at home

You use your Invisalign trays or Vivera retainers as your whitening trays, so there’s no need for extra trays. You can get beautiful white teeth at home! Whiter teeth and straighter teeth at the same time!

No extra office visits!

Invisalign Professional Whitening System is a kit you can use right at home, so you don’t need extra office visits to whiten your teeth! Get whiter teeth on your own time!

Treatment without Invisalign

Not wearing Invisalign or Vivera retainers? No problem! Dr. Mantzikos can provide special Invisalign whitening trays just for you! You can get whiter teeth even without Invisalign treatment!

All That's Good Begins With a Smile

Have Questions? Fill Out the Form Below or Call Us Today!