You qualify for braces when your teeth or jaw alignment causes functional problems, puts your oral health at risk, or falls outside specific measurement thresholds used by orthodontists and insurers. The qualification process involves both a clinical evaluation of your bite and, if insurance coverage is involved, a scoring system that rates the severity of your misalignment on a numerical scale.
Dental Problems That Qualify You for Braces
Braces correct more than crooked teeth. The clinical reasons for treatment fall into several categories, and most involve how your upper and lower teeth fit together when you bite down. An abnormal bite left untreated can lead to tooth decay, gum disease, tooth loss, abnormal enamel wear, jaw problems, and difficulty speaking or chewing.
The most common qualifying conditions include:
- Overbite or overjet: Upper front teeth that stick out significantly beyond the lower teeth. When the horizontal gap exceeds 9 millimeters, many programs consider it severe enough to automatically qualify for treatment.
- Underbite (reverse overjet): Lower teeth that sit in front of the upper teeth. A reverse overlap greater than 3.5 millimeters is often flagged as automatically qualifying.
- Crossbite: Upper teeth that bite inside the lower teeth on one or both sides. Crossbites left untreated in childhood can restrict jaw development.
- Crowding: Teeth that overlap or twist because there isn’t enough room in the jaw. When crowding in the front teeth exceeds 3.5 millimeters in an arch, it typically meets the threshold for scoring. Severe crowding in the upper front teeth beyond 8 millimeters can qualify on its own.
- Open bite: Upper and lower teeth that don’t touch when the mouth is closed, making it difficult to bite into food.
- Spacing: Gaps between teeth that affect how you chew or how your teeth wear over time.
These aren’t purely cosmetic concerns. Misaligned teeth are harder to clean, which increases the risk of cavities and gum disease. A bad bite can also cause uneven pressure on certain teeth, wearing them down faster than normal.
How the Orthodontic Evaluation Works
Qualification starts with a diagnostic visit. The orthodontist examines your bite, takes measurements, and uses imaging to see what’s happening beneath the surface. A standard evaluation includes several components.
X-rays are the foundation. A panoramic image shows all your teeth, roots, and jawbone in a single wide shot, revealing impacted teeth, missing teeth, or bone abnormalities. A cephalometric X-ray captures a side profile of your skull, letting the orthodontist measure how your upper and lower jaws relate to each other and to your skull. This is how skeletal problems (a jaw that’s too far forward or too far back) get distinguished from purely dental ones (teeth that are tilted or crowded but sitting in a normal jaw).
The orthodontist also creates a three-dimensional record of your teeth, either through traditional dental impressions or digital scans. These models allow precise measurement of crowding, spacing, and how your teeth come together. Some offices now generate 3D digital models directly from cone-beam CT scans, which eliminates the need for the gooey impression trays altogether.
After gathering this information, the orthodontist classifies your bite problem and determines how severe it is. That severity rating matters most when insurance is involved.
When Children Should Be Evaluated
The American Association of Orthodontists recommends children see an orthodontist by age 7. That sounds early, since most kids still have a mix of baby and adult teeth at that age, but the point isn’t necessarily to start treatment. It’s to catch developing problems while the jaw is still growing.
At 7, an orthodontist can spot issues like a narrow upper jaw, crossbites, or crowding that’s forming as permanent teeth come in. Some of these respond well to early intervention. A palatal expander, for example, can widen a child’s upper jaw while the bones are still flexible, creating room for permanent teeth and potentially reducing the need for extractions later. In some cases, removing a baby tooth at the right time helps a permanent tooth erupt into a better position on its own.
Early treatment doesn’t mean every 7-year-old gets braces. Many children are simply monitored until more permanent teeth arrive, with full treatment starting between ages 9 and 14. Adults qualify for braces using the same clinical criteria, though treatment may take longer because the jaw is no longer growing.
How Insurers Decide If Braces Are “Medically Necessary”
This is where qualification gets more complicated. Private dental insurance plans vary widely. Some cover a portion of orthodontic treatment for anyone an orthodontist recommends it for, while others require proof that the misalignment is severe enough to be considered a health issue rather than a cosmetic preference.
Medicaid and state-funded programs use standardized scoring systems to make this determination. The most common is the Handicapping Labio-Lingual Deviation (HLD) index, which assigns point values to specific measurements of your bite. The orthodontist measures things like how far your front teeth protrude, how much crowding exists, and whether your bite is reversed, then adds up the points.
In Massachusetts, for example, Medicaid authorizes orthodontic treatment for scores of 22 and above. New Mexico sets its threshold at 26 points. These numbers represent a level of misalignment severe enough to be considered a functional handicap rather than a minor irregularity. Certain conditions bypass the scoring entirely and qualify automatically: an overjet greater than 9 millimeters, a reverse overjet greater than 3.5 millimeters, or severe upper front crowding exceeding 8 millimeters.
The United Kingdom uses a different system called the Index of Orthodontic Treatment Need (IOTN), which rates cases on a 1-to-5 scale. Grade 1 is near-perfect alignment. Grade 2 covers minor issues like slightly protruding front teeth or minor irregularities. Grade 3 includes greater irregularities that still don’t typically need treatment for health reasons, such as front teeth protruding less than 4 millimeters beyond normal. Grades 4 and 5 represent cases with clear health implications and are prioritized for publicly funded treatment.
Functional vs. Cosmetic Qualification
The distinction between functional and cosmetic need is the single biggest factor in whether insurance covers your braces. Teeth that are slightly uneven but don’t interfere with chewing, speaking, or oral health are considered a cosmetic concern. You can still get braces for cosmetic reasons, but you’ll likely pay out of pocket.
Functional qualification means your misalignment is actively causing or will cause health problems. This includes difficulty chewing food properly, speech impediments caused by tooth or jaw position, jaw pain from an uneven bite, and accelerated tooth wear. Teeth that are so crowded they can’t be cleaned adequately also qualify on functional grounds, since the crowding directly increases the risk of decay and gum disease.
If you’re unsure whether your case qualifies, the orthodontic evaluation itself provides the answer. The measurements taken during that first visit are the same ones used to calculate severity scores for insurance. Many orthodontists will tell you during or shortly after the consultation whether your case meets the threshold for coverage, and most offices handle the insurance pre-authorization process for you.
What to Expect If You’re Borderline
Not every case falls neatly into “qualifies” or “doesn’t qualify.” If your severity score lands just below the insurance threshold, you have a few options. Your orthodontist can submit a detailed narrative explaining the functional impact of your misalignment, which sometimes persuades insurers to approve treatment. Some plans offer partial coverage for moderate cases even when full medical necessity isn’t established.
If insurance won’t cover treatment, most orthodontic offices offer payment plans that spread the cost over the duration of treatment, typically 18 to 24 months. The out-of-pocket cost for braces in the U.S. generally ranges from $3,000 to $7,000 depending on the type of braces and the complexity of the case. Clear aligners tend to fall in a similar range for mild to moderate corrections.