My Location: Add Location searchbar-open

About Our Office

The team at Harker Heights proudly serves military families with expert care from boardcertified orthodontists. Conveniently located near Fort Hood, we offer braces and Invisalign® treatment for kids, teens, and adults, plus special military discounts for those who serve. By combining cutting-edge technology with attentive service and a familycentered approach, we ensure every visit enhances both oral health and long-term satisfaction, making Smile Doctors a trusted choice for braces, Invisalign treatment, and early growth guidance. Book your FREE consultation online or by phone today

Start My Free Video Consult

Get all your questions answered in just three easy steps! No office visit needed.

  • Dr. Adcox and Dr. Diggs are both board certified orthodontists by the American Board of Orthodontics and and are in the top Top 1% Invisalign® Diamond Plus Providers.
  • Dr. Adcox attended Herman Ostrow School of Dentistry of USC and Dr. Diggs attended The University of Texas Health Science Center at Houston (UTHealth) School of Dentistry
  • Voted best orthodontist in Central TX since 2009
  • Smile Doctors Orthodontics in Harker Heights, TX proudly serves the Central Texas communities in the following zip codes: 76548, 76544, 76549, 76542, 76543, and many more!
  • Bilingual, Spanish speaking team
  • Convenient scheduling and progress tracking through Smile Doctors Anywhere app
  • Affordable monthly payment options and military discounts available for qualifying patients
  • Most dental insurance plans accepted

Smile Doctors Orthodontics is located on Morgan Street in Harker Heights, just minutes from Fort Hood and easily accessible from major roadways like I14. Our office proudly serves families from Harker Heights, Killeen, Nolanville, and other surrounding Central Texas communities.

Recent Google Reviews:

"One of my Invisalign attachments broke right after getting them and instead of making me come in another day or later to fix the issue they took me back right away to fix my issue. Place is great!"

5-star
Mark Laboy
300 Morgan St,
Harker Heights, TX, 76548-7204
Get Directions
Monday - Thursday: 8:30am-5pm
Friday: 8am-12pm

About Our Office

The team at Harker Heights proudly serves military families with expert care from boardcertified orthodontists. Conveniently located near Fort Hood, we offer braces and Invisalign® treatment for kids, teens, and adults, plus special military discounts for those who serve. By combining cutting-edge technology with attentive service and a familycentered approach, we ensure every visit enhances both oral health and long-term satisfaction, making Smile Doctors a trusted choice for braces, Invisalign treatment, and early growth guidance. Book your FREE consultation online or by phone today

Start My Free Video Consult

Get all your questions answered in just three easy steps! No office visit needed.

  • Dr. Adcox and Dr. Diggs are both board certified orthodontists by the American Board of Orthodontics and and are in the top Top 1% Invisalign® Diamond Plus Providers.
  • Dr. Adcox attended Herman Ostrow School of Dentistry of USC and Dr. Diggs attended The University of Texas Health Science Center at Houston (UTHealth) School of Dentistry
  • Voted best orthodontist in Central TX since 2009
  • Smile Doctors Orthodontics in Harker Heights, TX proudly serves the Central Texas communities in the following zip codes: 76548, 76544, 76549, 76542, 76543, and many more!
  • Bilingual, Spanish speaking team
  • Convenient scheduling and progress tracking through Smile Doctors Anywhere app
  • Affordable monthly payment options and military discounts available for qualifying patients
  • Most dental insurance plans accepted

Smile Doctors Orthodontics is located on Morgan Street in Harker Heights, just minutes from Fort Hood and easily accessible from major roadways like I14. Our office proudly serves families from Harker Heights, Killeen, Nolanville, and other surrounding Central Texas communities.

Recent Google Reviews:

"Awesome time and opportunity. #smiledoctors #buzzybooth"

5-star
Samantha Confer
Find us:
300 Morgan St,
Harker Heights, TX, 76548-7204
Get Directions
Monday - Thursday: 8:30am-5pm
Friday: 8am-12pm

Orthodontic Services Available

Braces

Smile Doctors offers metal and ceramic braces to suit our patients’ needs. Our orthodontists can develop a custom orthodontic treatment plan for kids, teens, and adults.

Invisalign® Aligners

A clear alternative to traditional braces, Invisalign® aligners are a convenient choice for adults and teens looking to discreetly straighten their teeth with clear aligners.

Smile Express®

This treatment offers adults seeking cosmetic adjustments a safe, affordable, orthodontist-led option with minimal office visits. It all starts with a free, no-obligation consultation!

Retainers

Keep your smile beautiful with clear or fixed retainers from Smile Doctors. Our orthodontists can fit a new or existing patient for a retainer and offer retainer repairs and replacements if needed.

Rising Star (7& Up)

The American Association of Orthodontists (AAO) recommends children see an orthodontist by age 7. Our RISING STAR program provides children ages 5-10 with complimentary, early care.

Current Offers and Insurance

Everyone deserves a confident and affordable smile. Convenient monthly payments and discounts are available for qualifying patients. We accept most insurance plans and will check your coverage during your FREE initial consultation.

Up to $500 Off
On comprehensive braces or Invisalign® aligner treatment

* When you sign up for autopay. Additional restrictions & exclusions may apply. Offer excludes any and all services and items covered in-full or in-part by any state or federal Medicaid program.

Pay in Full
Discounts when you pay in full for treatment

* Some restrictions & exclusions may apply.

Military Discount
10% off braces or Invisalign® aligners

A special offer for service members and family

* Some restrictions & exclusions may apply.

Family Plan
Discounts when multiple family members start treatment

* Some restrictions & exclusions may apply.

Meet Our Orthodontists in Harker Heights

Joshua Adcox
Dr. Joshua Adcox

Joshua Adcox, DDS, completed his undergraduate studies in Biology from Brigham Young University before earning his DDS from the University of Southern California School of Dentistry. He also holds a Certificate of Orthodontics from the Vanderbilt University School of Medicine. Dr. Adcox is an American Board of Orthodontist certified orthodontist and a member of the American Association of Orthodontists.

Adcox has established his reputation as a dedicated and caring orthodontist known for his strong work ethic and patient-centered care. When he isn’t pursuing his passion of creating beautiful smiles, he enjoys surfing and spending time with his wife Jamie and their five children.

Victoria Diggs
Dr. Victoria Diggs

Dr. Victoria Diggs has wanted to be an orthodontist since she had early treatment as a child. Now, she’s accomplished that goal and is excited to be joining Smile Doctors Harker Heights! Dr. Diggs grew up in Sugar Land, a city in the Houston area. She graduated from Duke University and completed her dental training at UT Health San Antonio School of Dentistry. Dr. Diggs further specialized in orthodontics, earning her master’s degree and certificate in orthodontics from UT Health Science Center at Houston.

Passionate about providing quality and compassionate care, and with a vision to create personalized treatment, she aims to empower her patients with beautiful and confident smiles, making a positive impact on their lives.

Dr. Diggs’ husband, Jamaal, lived and worked in North Austin while she was in dental school in San Antonio. She spent many of her weekends in Austin, and the two decided to settle down in the area. Outside of the office, Dr. Diggs loves to try new restaurants and play golf. She’s a big fan of Formula 1 and the Houston Astros, and she’s recently been learning to make pottery.

Joshua Adcox
Victoria Diggs

Meet Our Orthodontists in Harker Heights

Joshua Adcox
Victoria Diggs
Joshua Adcox Victoria Diggs
Dr. Joshua Adcox

Joshua Adcox, DDS, completed his undergraduate studies in Biology from Brigham Young University before earning his DDS from the University of Southern California School of Dentistry. He also holds a Certificate of Orthodontics from the Vanderbilt University School of Medicine. Dr. Adcox is an American Board of Orthodontist certified orthodontist and a member of the American Association of Orthodontists.

Adcox has established his reputation as a dedicated and caring orthodontist known for his strong work ethic and patient-centered care. When he isn’t pursuing his passion of creating beautiful smiles, he enjoys surfing and spending time with his wife Jamie and their five children.

Dr. Victoria Diggs

Dr. Victoria Diggs has wanted to be an orthodontist since she had early treatment as a child. Now, she’s accomplished that goal and is excited to be joining Smile Doctors Harker Heights! Dr. Diggs grew up in Sugar Land, a city in the Houston area. She graduated from Duke University and completed her dental training at UT Health San Antonio School of Dentistry. Dr. Diggs further specialized in orthodontics, earning her master’s degree and certificate in orthodontics from UT Health Science Center at Houston.

Passionate about providing quality and compassionate care, and with a vision to create personalized treatment, she aims to empower her patients with beautiful and confident smiles, making a positive impact on their lives.

Dr. Diggs’ husband, Jamaal, lived and worked in North Austin while she was in dental school in San Antonio. She spent many of her weekends in Austin, and the two decided to settle down in the area. Outside of the office, Dr. Diggs loves to try new restaurants and play golf. She’s a big fan of Formula 1 and the Houston Astros, and she’s recently been learning to make pottery.

Awards & Certifications

Patient Reviews

/
quote

“I love this place. Very clean professional and friendly.”

5-star
Vonnie H
quote

“Overall great experience! The only problem my daughter had was a few hours after we got home, one of her brace moved off her tooth. And for a child that was extremely excited to get braces have this happened was a no no. I tried messaging and calling but no response. So now I have to see about going back up there tomorrow hopefully 😔”

5-star
Jonqual Garrett
quote

“This place is amazing!!! Out the world experience for me and my daughter ❤️ the staff is so friendly and thr atmosphere is the best I have yet been to!! I’m so glad we decided to get her braces here!”

5-star
Phae Bailey
quote

“The staff is welcoming. They answered all questions and made sure that we understood how to properly take care of my son’s braces. Thank you so much for your good customer service!!”

5-star
Letisha Durgin
quote

“Excellent service”

5-star
Tanicqua Goodwin

Start Your Smile Journey with Us!

In the Community

Our team members make a difference in our communities every day. Whether we are putting on events at our clinics or hosting tooth talks in the schools, filling backpacks with supplies or donating time to those in need, creating smiles is our passion.

Community Partnerships