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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:

"The professionalism, efficiency and kindness we experienced at Smile Doctors was more than anyone could ask for. They are fantastic and their pricing was way more affordable than I expected!"

5-star
Macy Sills
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:

"The professionalism, efficiency and kindness we experienced at Smile Doctors was more than anyone could ask for. They are fantastic and their pricing was way more affordable than I expected!"

5-star
Macy Sills
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

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

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quote

“Love the atmosphere!”

5-star
Bianca Cole
quote

“We just recently moved here and WOW!!! What an incredible warm welcome!! Love the enthusiasm and cheerful attitudes from the entire staff! They made my son and I feel right at home. Big shout out and a huge thank you to Christina for being nothing short of AMAZING!!”

5-star
Jenae Quinn
quote

“A well-established and highly regarded dental practice in Central Texas offers cutting-edge technology and skilled professionals to cater to all your dental needs, from minor touch-ups to comprehensive treatments. This exceptional dentistry stands out for its commitment to delivering exceptional oral healthcare and achieving the radiant smile you’ve always desired.”

5-star
Donald Williams
quote

“She’s doing fine. I’ll remind her to push her aligners closer to her teeth 😊”

5-star
Lu-Lu Harris
quote

“I have to say from beginning to end this was a really great experience. Super friendly staff from beginning to end. Christina was so great with making my 11 year old daughter feel at ease and comfortable with her decision to start Invisalign treatment. I’m excited to start my own journey with smile Doctors as well!! Definitely recommend! The payment plan was so helpful too. Something I can work with and not break my bank!!”

5-star
Angela Henry

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