What Is the Difference Between an Orthodontist and a Periodontist?
An orthodontist and a periodontist are both dental specialists, but they focus on different problems. The simplest way to think about it: an orthodontist deals with the position of your teeth, while a periodontist deals with the health of the structures around your teeth.
An orthodontist corrects crooked teeth, crowded teeth, gaps, overbites, underbites, and crossbites. Their tools include traditional metal braces, ceramic braces, clear aligners like Invisalign, and other appliances that apply controlled force to move teeth into better alignment.
A periodontist diagnoses and treats gum disease (also called periodontal disease), gum recession, and bone loss around the teeth. They perform procedures like deep cleanings (scaling and root planing), gum grafts, bone grafts, guided tissue regeneration, and dental implant placement.
Training and Education: How Each Specialist Is Prepared
Both orthodontists and periodontists start with the same foundation. Each completes four years of dental school and earns a DDS or DMD degree. After dental school, each enters a residency program accredited by the Commission on Dental Accreditation (CODA) to specialize.
Orthodontist Training
An orthodontic residency lasts 2 to 3 years and focuses on tooth movement, jaw growth, and facial development. Orthodontic residents study biomechanics (how forces move teeth through bone), craniofacial growth patterns, and the design of fixed and removable appliances. They treat hundreds of cases during residency, ranging from simple alignment issues to complex skeletal problems.
Many orthodontists pursue board certification through the American Board of Orthodontics (ABO). Board-certified orthodontists have passed written and clinical examinations demonstrating advanced competency. You can learn more on our orthodontics specialty page at /specialties/orthodontics.
Periodontist Training
A periodontal residency lasts 3 years and focuses on the prevention, diagnosis, and treatment of diseases affecting the gums and supporting bone. Periodontal residents receive extensive surgical training, including soft tissue grafting, bone regeneration, and dental implant placement. They also study the relationship between periodontal disease and systemic health conditions like diabetes and cardiovascular disease.
Board certification is available through the American Board of Periodontology (ABP). You can learn more about this specialty on our periodontics page at /specialties/periodontics.
What Each Specialist Treats
The conditions and procedures handled by each specialist are distinct, though there are areas where their expertise connects.
Conditions an Orthodontist Treats
- Crooked or crowded teeth
- Gaps between teeth (diastema)
- Overbite, underbite, crossbite, and open bite
- Jaw misalignment that affects the bite
- Teeth that did not erupt properly
- Preparation for restorative dental work that requires better tooth alignment
Conditions a Periodontist Treats
- Gingivitis (early-stage gum inflammation)
- Periodontitis (advanced gum disease with bone loss)
- Gum recession and exposed tooth roots
- Bone loss around teeth
- Peri-implantitis (gum disease around dental implants)
- Dental implant placement and related bone and soft tissue procedures
When You Might Need Both Specialists
Orthodontists and periodontists work together more often than most patients realize. Several clinical scenarios require coordinated care between both specialists.
Orthodontic Treatment With Existing Gum Disease
Moving teeth through bone requires healthy supporting structures. If you have active gum disease, starting orthodontic treatment without addressing it first can make the bone loss worse. In this situation, a periodontist treats the gum disease and stabilizes the bone, and then the orthodontist can safely begin moving teeth.
In some cases, the periodontist and orthodontist manage the patient simultaneously. The periodontist monitors gum health and performs maintenance cleanings while the orthodontist adjusts the braces or aligners. This coordinated approach is common in adult patients who have both alignment issues and a history of periodontal disease.
Gum Recession Caused by Tooth Position
Teeth that sit outside the natural arch of the jawbone can develop gum recession because the bone covering the root is thin or absent. An orthodontist can move the tooth back into a better position within the bone, and a periodontist can graft tissue to cover the exposed root. Depending on the case, one procedure may need to happen before the other, or they may proceed in stages.
Implant Planning and Space Management
If you are missing a tooth and need a dental implant, the surrounding teeth may have shifted into the gap over time. An orthodontist can reopen the space so a periodontist or oral surgeon can place the implant in the correct position. This sequencing produces a better functional and aesthetic result than trying to fit an implant into a compromised space.
Cost Comparison
The cost of seeing each specialist depends on the specific treatment you need. Costs vary by location, provider, and complexity of your case.
Orthodontic treatment typically costs $3,000 to $7,000 for traditional braces and $3,500 to $8,000 for clear aligners, though limited treatment for minor issues can cost less. Most orthodontists include all visits, adjustments, and retainers in a single fee.
Periodontal treatment varies more widely because it depends on the severity of disease. A deep cleaning (scaling and root planing) may cost $500 to $2,000 for the full mouth. Gum graft surgery typically costs $600 to $1,200 per area. Guided tissue regeneration ranges from $1,000 to $3,000 per site. Dental implant placement by a periodontist adds $1,000 to $3,000 for the surgical component.
Most dental insurance plans provide some coverage for both orthodontic and periodontal treatment, though orthodontic benefits often have a separate lifetime maximum (commonly $1,500 to $2,500) and may only cover patients under a certain age.
How to Know Which Specialist You Need
Your general dentist is often the best starting point. During routine checkups, your dentist evaluates both your tooth alignment and your gum health. If they identify a problem in either area, they will refer you to the appropriate specialist.
If your concern is about the position of your teeth, your bite feels off, or you want to straighten your teeth, you need an orthodontist. If your gums bleed regularly, you have been told you have gum disease, you notice your gums receding, or you need a dental implant, you need a periodontist.
You do not need a referral to see either specialist in most cases. If you are unsure which one you need, either specialist can evaluate you and direct you appropriately.
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