Short answer. An orthodontist is a dentist who completed an additional 2-3 years of full-time, CODA-accredited residency training specifically in tooth movement, bite correction, and craniofacial growth. Both providers hold a DDS or DMD degree from a four-year dental school. Only orthodontists hold the Specialty Certificate in Orthodontics and Dentofacial Orthopedics, which the American Dental Association recognizes as orthodontic specialization. Some orthodontists also hold the voluntary ABO Diplomate distinction, awarded by the American Board of Orthodontics after written and clinical examination. For routine cleanings, fillings, crowns, and exams, a general dentist is the right provider. For tooth movement, bite correction, growth modification in children, and complex aligner cases, the residency-level training matters.
Dr. Rodrigo Viecilli at Limestone Hills Orthodontics in Austin holds the CODA-accredited Specialty Certificate in Orthodontics from Indiana University, is an ABO Diplomate of the American Board of Orthodontics (a distinction fewer than half of practicing US orthodontists hold), and earned a PhD in Orthodontic Biomechanics with 27+ peer-reviewed publications. He also co-invented SmartArch™ wire technology and has treated 5,000+ cases. The credential chain (DDS, CODA-accredited residency, ABO Diplomate, PhD) is the specific pathway the American Dental Association recognizes as orthodontic specialty practice. A general dentist’s continuing-education weekend courses, however thorough, do not produce the same depth of training.
What Makes Someone an Orthodontist
Every orthodontist is a dentist first. The pathway is identical for the first four years: a four-year DDS (Doctor of Dental Surgery) or DMD (Doctor of Dental Medicine) program, both accredited by the Commission on Dental Accreditation. The two degrees are equivalent; the difference is only which university awards which name.
After dental school, the pathways diverge. A general dentist enters practice and provides the full range of routine dental care: exams, cleanings, fillings, crowns, root canals, extractions, gum disease management, and basic cosmetic dentistry. An aspiring orthodontist applies to a separate, highly competitive specialty residency program.
The orthodontic residency takes 2-3 years of full-time, in-clinic, supervised training. CODA accreditation standards require approximately 3,700 hours of clinical training in tooth movement, bite analysis, jaw growth and development, treatment planning, biomechanics, and appliance design. Residents treat hundreds of cases under faculty supervision before they finish. The American Association of Orthodontists publishes the residency length as 24-36 months; most US programs run 28-33 months.
When residency ends, the orthodontist receives a Specialty Certificate in Orthodontics and Dentofacial Orthopedics. The American Dental Association recognizes this certificate as the credential that defines orthodontic specialty practice. The Texas State Board of Dental Examiners follows the ADA standard; only Specialty Certificate holders may legally call themselves orthodontists in Texas.
What CODA Accreditation Means
CODA stands for the Commission on Dental Accreditation. It is the national agency that accredits dental schools and dental-specialty residency programs in the United States. The US Department of Education formally recognizes CODA as the specialized accrediting body for dental education.
The accreditation matters because it sets a uniform national standard for what every orthodontic residency must teach. CODA standards specify the program director’s qualifications, the faculty-to-resident ratio, the clinic facilities, the case volume each resident must complete, the curriculum content (anatomy, biomechanics, growth and development, treatment planning, research methodology), and the outcomes assessment process. Programs lose accreditation if they fall below the standards.
For patients, the practical meaning is simple. Asking whether a provider completed a CODA-accredited orthodontic residency is the cleanest single question to verify orthodontic specialty training. A weekend continuing-education course, an online aligner certification, or a “mini-residency” in orthodontics is not CODA-accredited. The full residency is.
CODA maintains a public directory of every accredited program, currently around 70 in the United States. Verifying a doctor’s residency institution against the CODA list takes about 30 seconds.
What an ABO Diplomate Is
Completing a CODA-accredited orthodontic residency confers the Specialty Certificate. Holding ABO Diplomate status is a separate, voluntary credential earned after residency. ABO stands for the American Board of Orthodontics, the only orthodontic specialty board recognized by the American Dental Association and the American Association of Orthodontists.
Becoming an ABO Diplomate requires passing a multi-part written examination covering the full breadth of orthodontic knowledge, followed by a clinical examination in which the orthodontist presents finished treated cases to a panel of board examiners. The cases must meet specific objective standards for tooth position, bite relationship, and treatment outcome. The examination is rigorous; some candidates fail and re-take it multiple times before passing.
Public ABO records show that roughly one in three to one in two practicing US orthodontists hold active Diplomate status. The percentage has grown over the last decade as more residency graduates pursue the credential, but it remains a minority distinction. Fewer than half of practicing US orthodontists are ABO Diplomates at any given moment, though the share continues to rise.
A general dentist cannot become an ABO Diplomate, regardless of how many orthodontic cases they have treated. The Specialty Certificate from a CODA-accredited residency is the prerequisite for ABO candidacy. ABO Diplomate status therefore signals two things at once: completion of the residency training and successful demonstration of clinical case outcomes against a national peer-set standard.
When to See an Orthodontist vs Your General Dentist
The clearest way to decide is by the type of work involved. A general dentist is the right primary care provider for the inside of the mouth: routine exams, cleanings, fluoride treatments, sealants, fillings, crowns, bridges, root canals, gum disease, extractions, and basic cosmetic treatments like whitening and veneers. Most patients should see a general dentist twice a year for these services.
An orthodontist is the right provider whenever the work involves moving teeth, correcting a bite, or guiding jaw growth. The list includes crowded teeth, gapped teeth, overbite, underbite, crossbite, open bite, jaw alignment problems, impacted canines and other teeth that have not erupted, growth-related skeletal issues in children, surgical-orthodontic coordination for severe cases, and complex Invisalign or aligner treatment.
The reality is that for routine cleanings, fillings, crowns, and exams, a general dentist is faster, more accessible, and equally qualified; the orthodontist comes in only when tooth movement, bite mechanics, or growth is involved. The two providers complement each other rather than compete. Most orthodontic patients keep seeing their general dentist for cleanings every six months throughout the orthodontic treatment.
The American Association of Orthodontists recommends a first orthodontic evaluation by age 7. The evaluation is not a treatment recommendation; it is a check on growth and bite development at the moment when intervention has the most leverage if anything is off track. Most children evaluated at age 7 do not need immediate treatment; the orthodontist simply confirms development is normal and schedules a follow-up.
Why Some General Dentists Offer Invisalign
Align Technology, the manufacturer of Invisalign, certifies any licensed dentist who completes the company’s training course. The course is typically a weekend or a multi-week online program. After certification, the dentist can prescribe Invisalign cases through the manufacturer’s lab. This is why many general dental offices in Austin and nationally advertise Invisalign.
The aligners themselves are identical regardless of who prescribes the case. The difference between a general dentist’s Invisalign treatment and an orthodontist’s lies upstream of the aligners: in the diagnostic workup, the case-selection judgment, the treatment planning, and the management of cases that do not respond as predicted.
An orthodontic residency dedicates thousands of hours to bite analysis, biomechanics, and predicting biological response to tooth movement. The residency also covers the case types aligners alone cannot finish, including significant rotations, vertical bite problems, impacted teeth, and large anteroposterior corrections. For these cases, hybrid treatment (aligners plus selective bracket use for precision movements at the end) often delivers a better result than aligners alone. Hybrid treatment requires bracket-system training that Invisalign certification by itself does not include.
For a straightforward mild crowding case in an adult patient with a healthy bite, an experienced general dentist with strong continuing education can deliver acceptable Invisalign results. The further the case sits from “straightforward and mild,” the more the residency-level training matters. For a side-by-side cost breakdown of Invisalign at a general dentist versus an orthodontist, see the dedicated Invisalign Cost guide.
What to Verify Before Choosing an Orthodontist
The credential signals worth checking are public information. A few minutes of verification is the difference between confirming the training depth and taking marketing language at face value.
- CODA-accredited residency institution. Ask which university awarded the Specialty Certificate. Cross-check against the CODA directory of accredited programs. A weekend continuing-education course or an online “ortho certification” is not CODA-accredited training.
- ABO Diplomate status. The American Board of Orthodontics maintains a public directory of active Diplomates. Verifying status takes 30 seconds. Not every excellent orthodontist is a Diplomate, but Diplomate status is a meaningful positive signal.
- Years in practice and case volume. Specialty experience compounds. A practitioner who has personally treated thousands of cases has seen patterns a newer practitioner has not. Ask directly.
- In-person consultation policy. A consultation that includes a clinical exam (not just a sales conversation) and a clear recommendation, including the option to not treat if treatment is not warranted, is the right standard.
- Transparent, all-inclusive pricing. The full fee at a specialty orthodontic practice should cover every appointment, every wire change, every retainer, and emergency visits until treatment ends. Per-visit or per-aligner pricing structures, common at general dental offices offering Invisalign, can produce surprises late in treatment.
- Research or teaching affiliation, if relevant. Orthodontists who publish, teach in a residency program, or hold an advanced degree (Master’s or PhD) maintain a depth of current evidence that everyday practice alone does not require.
Choosing an Orthodontist in Austin and the Hill Country
The Austin metro and the Hill Country corridor (Lakeway, Bee Cave, Westlake, Steiner Ranch, Tarrytown, Northwest Hills, Davenport Ranch, River Place, Four Points, Jester Estates, Cedar Park, Round Rock, Anderson Mill, Cat Mountain) include both general dental offices that offer Invisalign and dedicated orthodontic specialty practices. The choice for any specific case is rarely a generic “ortho or dentist?” question; it is “does this case involve tooth movement, bite mechanics, or growth, and if so, what credential depth does the case warrant?”
Limestone Hills Orthodontics is a dedicated orthodontic specialty practice in Austin. The credential chain (DDS, CODA-accredited Specialty Certificate from Indiana University, ABO Diplomate, PhD in Orthodontic Biomechanics) is the same chain Austin patients can verify on the public ADA, CODA, and ABO directories. Free consultations include a clinical exam, 3D CBCT imaging, and an honest recommendation on whether the case warrants orthodontic treatment, routine dental care, or no treatment at all. Many consultations end with the recommendation to defer treatment, which is the correct answer when development is on track and intervention would not change the outcome.
Common Questions: Orthodontist vs Dentist
Can a regular dentist do orthodontic work?
In most US states, including Texas, a licensed general dentist can legally place braces and treat Invisalign cases. The license permits the work; it does not provide the additional training. An orthodontist completes an extra 2-3 years of full-time, CODA-accredited residency dedicated exclusively to tooth movement, bite correction, and craniofacial growth, on top of the same four-year dental school every general dentist attends. For straightforward cases, results from a general dentist with strong continuing education can be acceptable. For complex bite problems, jaw alignment, impacted teeth, surgical-orthodontic coordination, or growing children with developing skeletal issues, the residency-level training matters.
Why are orthodontists more expensive than dentists?
Orthodontic fees reflect 2-3 years of additional specialty residency, the equipment required for orthodontic diagnosis and treatment (CBCT imaging, intraoral scanners, appliance fabrication), and the multi-year care relationship that comprehensive treatment involves. The full fee at most orthodontic practices, including Limestone Hills, covers every appointment, every wire change, every emergency visit, and every retainer until treatment ends. General dentists offering Invisalign typically price per aligner package; complex refinements and revisions may carry separate charges. The per-visit cost can look lower while the all-in cost ends up comparable or higher.
Do I need a referral from my dentist to see an orthodontist?
No. In Texas and every US state, patients can schedule an orthodontic consultation directly without a dentist referral. Most orthodontic practices, including Limestone Hills Orthodontics, offer free consultations for new patients. The American Association of Orthodontists recommends an orthodontic evaluation by age 7 for children, regardless of whether the family dentist has flagged a concern. Many dental insurance plans also do not require a referral for the orthodontic benefit to apply.
How long is orthodontist school?
An orthodontist completes the same four-year DDS or DMD program as every general dentist, then an additional 2-3 years of full-time, CODA-accredited residency in orthodontics and dentofacial orthopedics. Total post-undergraduate training is therefore 6-7 years minimum. Some orthodontists complete additional research training (a Master’s or PhD) during or after residency. Dr. Viecilli at Limestone Hills holds a PhD in Orthodontic Biomechanics from Indiana University in addition to the orthodontic Specialty Certificate, for roughly 9 years of post-dental-school training.
What’s the difference between Invisalign at a dentist vs an orthodontist?
Align Technology, the manufacturer of Invisalign, certifies any licensed dentist who completes the company’s training course. The aligners themselves are identical regardless of who treats the case. The difference is diagnostic depth, case-selection judgment, and the ability to manage complications. An orthodontist’s residency includes thousands of hours analyzing bites, planning tooth movements, predicting biological response, and managing the cases aligners cannot finish on their own. Many adult cases also benefit from hybrid treatment (aligners plus selective bracket use for precision movements at the end), which requires bracket-system training that aligner certification alone does not provide.
Sources. American Association of Orthodontists, Orthodontist vs. Dentist resource (aaoinfo.org/resources/orthodontist-vs-dentist). Commission on Dental Accreditation, Accreditation Standards for Advanced Dental Education Programs in Orthodontics and Dentofacial Orthopedics (coda.ada.org/standards). American Board of Orthodontics, Become Certified and public Diplomate directory (americanboardortho.com). American Dental Association, DDS and DMD (mouthhealthy.org/all-topics-a-z/dds-and-dmd). US Department of Education, Database of Accredited Postsecondary Institutions and Programs. Texas State Board of Dental Examiners, specialty practice rules (tsbde.texas.gov).
