Introduction
When you have a bite problem—whether your top teeth stick out too far, your bottom jaw is too far forward, or your teeth don't meet properly when you close your mouth—your orthodontist has several different treatment options. How long it takes to fix your bite depends on which type of problem you have and how severe it is. Some cases can be corrected in under two years, while more serious issues might take longer or even require surgery. Understanding the different bite problems and how long each typically takes to fix can help you plan ahead and set realistic expectations for your treatment.
Overbite Problems: When Your Top Front Teeth Stick Out Too Far
An overbite (sometimes called a "Class II" bite) happens when your upper front teeth overlap your lower front teeth too much. This is one of the most common bite problems, affecting nearly half of all people to some degree. If your overbite is mild—meaning your upper teeth overlap your lower teeth by only about 3 to 5 millimeters—you might be able to fix it with braces alone in about 12 to 18 months without needing surgery.
For moderate overbites, where the overlap is 5 to 8 millimeters, treatment usually takes 18 to 24 months. Your orthodontist might use special equipment like a headgear (usually worn at night) to help guide your upper jaw back and prevent it from growing forward too much. This works best if you're still a growing child, usually before age 12. If you have a severe overbite—over 8 millimeters of overlap—braces alone might not create the perfect result, and your orthodontist might recommend jaw surgery combined with braces. Surgery typically takes about 18 to 32 months total when you include the time before surgery, the surgery itself, recovery, and braces afterward. Explore how decalcification prevention helps maintain, especially important when treatment extends over two years.
Underbite Problems: When Your Lower Jaw Sticks Out Too Far
An underbite (called "Class III" in dental terms) is the opposite of an overbite—your lower front teeth stick out in front of your upper front teeth. This problem is trickier to fix than an overbite because it's often related to how your lower jaw is shaped and sized relative to your upper jaw. If your underbite is mild, your orthodontist might be able to correct it with braces in about 18 to 24 months, though these corrections sometimes don't hold as well as overbite corrections and might shift back over time.
For a moderate or severe underbite, your orthodontist will usually recommend surgical correction combined with braces. Before surgery, you'll wear braces for about 12 to 18 months to position your teeth in a way that works with the planned jaw surgery. The surgery itself is a one-time procedure that takes several hours, and then you'll recover for about 1 to 2 months.
After that, you'll need another 6 to 12 months of braces to fine-tune your bite, making the total treatment time 18 to 32 months. The good news? When underbite is fixed surgically rather than with just braces, the results are much more stable and less likely to shift back over time.
Crossbite Problems: When Your Teeth Don't Line Up Side to Side
A crossbite happens when your upper teeth bite inside your lower teeth on one side or both sides of your mouth. This creates an uneven bite pattern. The good news about crossbites is that they're often the fastest bite problems to fix, especially if you catch them early. If you're a growing child with a crossbite, rapid palatal expansion—where your orthodontist gradually widens your upper jaw—can fix the problem in as little as 4 to 8 weeks of active treatment, followed by about 6 months of a retainer to hold the correction in place.
If you don't get a crossbite fixed when you're young and your jaw has finished growing, it takes longer. Your orthodontist will have to move your teeth rather than expand your jaw, which typically takes 8 to 12 months and is less stable. For this reason, catching and treating crossbites early—ideally during the mixed dentition phase when you have both baby teeth and permanent teeth—gives you the best results. Comprehensive treatment information is available in, which outlines the phases of treatment and what to expect at each stage.
Open Bite Problems: When Your Front Teeth Don't Touch
An open bite is when your front teeth don't touch even when your mouth is completely closed. Instead, there's a gap between them. Open bites are among the most challenging bite problems to fix because they tend to be caused by habits (like tongue thrust or thumb sucking) that have to change for the treatment to work. Mild open bites with a gap of less than 2 millimeters might take 12 to 18 months to close.
More significant open bites, with gaps of 2 to 5 millimeters, typically require 18 to 30 months of treatment because your orthodontist needs to push your front teeth together while sometimes adjusting your back teeth to help close the space. Very severe open bites—with gaps larger than 5 millimeters—usually can't be fixed with just braces. Instead, your orthodontist will recommend jaw surgery combined with braces, taking about 18 to 32 months total. The key to success with open bites is breaking the habit that caused them in the first place, whether that's tongue thrust or thumb sucking.
Deep Bite Problems: When Your Upper Teeth Cover Your Lower Teeth Too Much
A deep bite (sometimes called an "overbite" in everyday language, though it's different from the medical definition) happens when your upper front teeth overlap your lower front teeth by too much when you close your mouth. If it's mild (3 to 4 millimeters of overlap), braces can usually fix it in 12 to 18 months. For moderate deep bites, expect 16 to 24 months of treatment as your orthodontist works to adjust the height of both your upper and lower teeth.
Severe deep bites, where the overlap is more than 6 millimeters, are harder to fix with just braces. Your orthodontist might recommend jaw surgery if the bite problem is severe enough to affect your chewing or jaw function. Surgery can make a dramatic difference for deep bites and works particularly well because it addresses the underlying jaw position rather than just moving teeth around. With surgery, you're looking at a total treatment time of 18 to 32 months, but the results are usually more stable and satisfy aesthetic goals better than non-surgical treatment.
Early Treatment Versus Waiting Until Your Jaw Stops Growing
One important thing to understand is that your orthodontist considers whether you're still growing when planning your bite correction. If you're a child or early teenager whose jaw is still developing, your orthodontist might recommend early treatment to guide your jaw growth in the right direction. This is especially true for Class II problems (overbites) and crossbites. When you start treatment during your growth phase, you might achieve better results with less extraction of teeth and sometimes shorter overall treatment time.
If you wait until your jaw has finished growing (usually by age 16-17 for girls and 17-18 for boys), your orthodontist can't change your jaw size anymore, only move your teeth. This sometimes means you'll need more extensive tooth movement or possibly surgery to achieve the ideal bite. That's why many orthodontists recommend starting treatment while you're still growing, even if it means treatment might span a longer total calendar time—because the biological advantages of guiding growth make the results better.
Every patient's situation is unique—always consult your dentist before making treatment decisions.Conclusion
Bite correction timelines span 12-30 months non-surgically depending on malocclusion severity and type: Class II overjet correction 18-24 months non-surgically, Class III underbite correction 20-28 months non-surgically with high relapse tendency, anterior open bite correction 18-30 months for moderate cases, and crossbite correction 6-8 months via rapid expansion plus 12-16 months fixed appliance detailing. Severe skeletal discrepancies require surgical intervention adding 18-32 months total (pre-surgical, surgical, and post-surgical phases). Eruptive vertical movements (deep bite, open bite) demonstrate longer timelines than horizontal movements due to slower biological response to intrusive/extrusive forces. Post-treatment relapse varies from 20-30% for dental movements to 50%+ for non-surgical skeletal corrections, necessitating appropriate retention protocol.
> Key Takeaway: ## Key Takeaway: Your Bite Correction Timeline Depends on Your Specific Situation