Welcome to OrthoZone!

Thank you for visiting the website of OrthoZone, a sports-themed orthodontic practice dedicated to helping you achieve a healthy, beautiful smile that gives you the self-esteem and confidence you deserve!

Convenient Locations

We have five convenient locations in Kennesaw, Marietta, Hiram, Dallas, and Woodstock, Georgia, also serving Acworth, West Cobb and Paulding County. We specialize in treatment for children, teens, and young adults.

Effective Treatment

Here at OrthoZone, we use the most advanced technology, including self-ligating braces, Invisalign® "invisible" aligners, clear ceramic braces, and traditional metal braces. We also offer the most advanced high-tech procedures and equipment, including digital photography and radiography.

Amazing Team

Our practice's top priority is providing high-quality care in a comfortable, family-friendly environment. Dr. Doug Singleton, Dr. Candace Cronan, and Dr. Christian Johnson understand that choosing an orthodontist is an important decision and recognize that every patient has different needs. We have a reputation for being on time with your appointments, friendly, professional, and family-oriented. Our energy and commitment to making orthodontic care a pleasant and memorable experience are evident throughout our office.

Thank you again for visiting our website. Dr. Singleton, Dr. Cronan and our staff look forward to seeing you soon. If you have any questions about our practice, please feel free to contact us.

  • Kennesaw Location


    3104 Creekside Village Dr., Suite 401
    Kennesaw, GA 30144

  • Hiram Location


    66 Hiram-Douglasville Hwy.
    Hiram, GA 30141

  • Due West Location


    3894 Due West Rd., Suite 220
    Marietta, GA 30064

  • Crossroads Location


    8879 Dallas-Acworth Hwy.
    Dallas, GA 30132

  • Woodstock Location


    12929 Highway 92, Suite 600
    Woodstock, GA 30188

OrthoZone Score Card Rewards!


OrthoZone Score Card Rewards! Nothing shows you’re a champ like our OrthoZone Score Card! With our Score Card Rewards program, our patients can earn points for things like showing up to appointments on time, engaging with us on social media, referring friends and family to our practice and more. Spend those earned points on great gift cards from Amazon, Target, Walmart, Starbucks, GameStop, and more!Learn more Learn More

Current Contests & Events


Current Contests & EventsStop by our office, because no matter what day it is, there’s always something new and fun happening around here! Seasonal contests, patient-centered outings, online challenges and more – you can always find something fun at OrthoZone! Visit our Practice Events & Contests page to find out what great events are happening right now! Learn More



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