Most people wear braces for about 18 to 24 months, though treatment can range from as little as 14 months for mild cases to 33 months or more for complex ones. A systematic review of fixed-appliance treatment found an average of roughly 20 months, while cases evaluated under American Board of Orthodontics standards averaged closer to 24.6 months. Your specific timeline depends on the severity of your misalignment, whether teeth need to be extracted, and how well you keep up with appointments.
What Happens Inside Your Jaw
Braces don’t just shove teeth into new positions. They trigger a slow, controlled remodeling of the bone around each tooth root. When a bracket and wire apply pressure, one side of the tooth gets compressed against the bone while the other side gets pulled away from it. On the compressed side, your body sends in cells that dissolve small amounts of bone, creating space for the tooth to shift into. On the stretched side, bone-building cells lay down new bone to fill the gap the tooth left behind.
This cycle of dissolving and rebuilding is why orthodontic treatment takes months rather than weeks. Your body can only remodel bone at a certain pace. Pushing teeth faster than the bone can keep up risks damaging the roots or the surrounding tissue. Each adjustment appointment nudges the process forward by changing the direction or amount of force, but the biology sets the speed limit.
Factors That Shorten or Lengthen Treatment
The biggest factor is the complexity of your case. Patients who need teeth extracted before braces go on average about 20 months in treatment, compared to roughly 17.5 months for non-extraction cases. Extractions mean the orthodontist has to close gaps, level the arch, and fine-tune the bite, all of which add time.
Missed appointments matter more than most people realize. Patients who missed two or more scheduled visits averaged about 22 months in treatment, versus under 18 months for those who missed one or none. That’s over four extra months just from skipping appointments. And loose or broken brackets carry their own penalty: each one adds roughly 1.2 months to your total treatment time. If a bracket needs to be repositioned, that first repositioning alone adds nearly 3 months on average.
Age, interestingly, does not appear to make a significant difference. Research comparing adolescents to adults found no meaningful correlation between a patient’s age at the start of treatment and how long it took to finish. Adults sometimes assume their teeth will move more slowly, but the data doesn’t support that. Gender shows a small but statistically significant gap, with men averaging about 19 months and women about 18.
How Often You’ll Visit the Orthodontist
Modern wires are engineered to apply steady pressure over longer periods than older designs, which means you don’t need to go in as often as patients did a generation ago. Most orthodontists now schedule adjustment appointments every 6 to 10 weeks. At each visit, the wire may be changed or adjusted, elastic bands swapped, and progress checked against the treatment plan. These appointments are usually quick, often under 30 minutes, but they’re the main way your orthodontist keeps the process on track.
Clear Aligners vs. Traditional Braces
If you’re weighing clear aligners against metal brackets, speed is one point of comparison. A comparative study found that clear aligner treatment averaged 18 months, while traditional braces averaged 24 months for similar cases. That six-month difference is statistically significant, though it comes with caveats. Clear aligners work best for mild to moderate crowding and spacing issues. More complex bite problems, like significant overbites or rotated teeth, often still require traditional braces, and choosing aligners for a case they can’t fully handle may mean switching to braces partway through, which would erase any time savings.
Techniques That Speed Up Tooth Movement
Some orthodontists offer acceleration procedures designed to speed up bone remodeling. The most studied technique involves making tiny perforations in the bone near the teeth being moved. These micro-injuries stimulate a stronger remodeling response, bringing more bone-dissolving cells to the area. In human clinical trials, this approach has increased the rate of tooth movement by 1.6 to 2.3 times compared to the untreated side. One study found canine retraction sped up by two to three times the conventional rate.
Low-level laser therapy is another option, though the results are more modest, boosting movement by about 1.3 times. Combining both approaches in one study yielded roughly 1.8 times faster movement. These techniques won’t cut a two-year treatment down to six months, but they can meaningfully shorten the timeline for specific phases of treatment, particularly when large gaps need to be closed.
What “Done” Actually Looks Like
The day your braces come off isn’t the end of the process. Your teeth have a strong tendency to drift back toward their original positions, especially in the first year after treatment. The bone and tissue around each tooth need time to fully stabilize in their new locations.
You’ll be fitted with a retainer, either a removable one you wear at night or a thin wire bonded behind your front teeth. The American Association of Orthodontists notes that a retainer is typically necessary for life, though how often you wear it usually decreases over time. Many orthodontists start with full-time wear for several months, then transition to nighttime only. Skipping your retainer, especially early on, is one of the most common reasons people end up needing a second round of orthodontic work.
A Realistic Timeline to Expect
For mild crowding or spacing with no bite issues, you might be looking at 12 to 16 months. Moderate cases with some bite correction typically fall in the 18 to 22 month range. Complex cases involving extractions, significant bite discrepancies, or impacted teeth can stretch to 28 months or beyond. Your orthodontist will give you an estimate at your initial consultation, but keep in mind that estimate assumes you show up to every appointment and don’t break any brackets.
The single most effective thing you can do to stay on schedule is protect your brackets (avoid hard, sticky foods) and keep every appointment. Those two habits alone account for months of difference in the data. Patients who do both consistently finish closer to the short end of their estimated range, while those who don’t can add six months or more to their treatment without even realizing it.