Orthodontics for Teens: Braces Compared With Aligners in General Terms

Short answer

• Teen orthodontics usually comes down to two main appliances: fixed braces, which are bonded to the teeth and stay on around the clock, and clear aligners, which are removable plastic trays worn for most of the day. Both can straighten teeth and correct many bite problems. Neither is automatically better. The American Association of Orthodontists (AAO) makes the point directly: one appliance is not inherently better than another, and the right choice depends on the goals of treatment and the patient's lifestyle. The practical differences are these. Braces can treat most orthodontic problems, including complex crowding, rotations, and bite correction, and they do not depend on a teen remembering to wear anything. Aligners are nearly invisible and come out for eating and brushing, but the AAO states they must be worn at least 22 hours a day, and they only work while they are in the mouth. Braces demand careful cleaning around brackets and some foods to avoid. Aligners demand discipline about wear time, spotless teeth before trays go back in, and not losing the trays. This article is general information only. It is not a diagnosis and it does not recommend an appliance for any individual teen. That decision follows an in-person orthodontic assessment of the teeth, bite, jaws, and growth. For a closer look at one brand-named aligner system written for parents, see our guide to Invisalign for teens.

What Orthodontics for Teens Actually Treats

Orthodontics is the dental specialty concerned with the position of the teeth and jaws and with how the teeth meet when biting. King’s College Hospital NHS Foundation Trust describes it in similar terms: a type of dentistry concerned with the growth of the teeth, jaw, and face, where treatment aims to improve the appearance, position, and function of crooked or abnormally arranged teeth.

The problems treated in the teen years are usually a mix of alignment and bite issues:

• Crowding, where teeth overlap because there is not enough room for them to line up.
• Spacing, where gaps leave teeth too far apart.
• Overbite, where the upper front teeth cover too much of the lower front teeth.
• Overjet, where the upper front teeth stick too far forward.
• Underbite, where the lower front teeth bite in front of the upper front teeth.
• Crossbite, where some upper teeth bite inside the lower teeth instead of outside them.
• Open bite, where some teeth do not touch at all when the mouth closes.
• Teeth that have come through in the wrong position, or that are stuck and have not come through.

The AAO notes that well-aligned teeth are easier to brush and floss, which can lower the risk of cavities and gum problems, and that a balanced bite can reduce uneven wear and jaw strain. That is the health case for treatment. It sits alongside the confidence case, which matters a great deal to teenagers and is a legitimate part of the conversation at an assessment, as long as it does not crowd out the clinical picture. Not every crooked smile needs treatment, though, which is why an assessment comes first.

When Teen Treatment Usually Starts, and Why an Early Checkup Still Matters

Families often assume orthodontics begins when braces go on, usually somewhere in the early teens. The assessment timeline starts much earlier. The AAO recommends a first orthodontic checkup no later than age 7. By that age, most children have a mix of baby teeth and permanent teeth, which lets an orthodontist evaluate how the teeth and jaws are developing and spot problems while they are still forming.

An early checkup rarely means early braces. More often it leads to monitoring, with periodic visits to watch growth; a limited early step, such as an expander or partial braces, to guide growth or make room for incoming teeth; or a plan to begin full treatment later, once more permanent teeth have come through. Catching a problem early can sometimes avoid more complex treatment later, but waiting is also a deliberate and common recommendation.

Full teen treatment usually begins when most permanent teeth have erupted, which for many teens is in the early teenage years. The teen window has a real advantage: permanent teeth are mostly in place, yet growth has not finished, so an orthodontist can still use jaw growth to help correct some bite problems. Treatment started too early can mean a longer total time in appliances with a second phase later. Treatment left very late is still possible, but growth-related correction gets harder.

If your child is younger and you are still at the stage of routine dental visits, our explainer on children’s dentistry covers how general dental care for young children works alongside specialist orthodontic checks.

What an Orthodontic Assessment Involves

An assessment is a diagnostic visit, not a sales appointment. The AAO stresses that an accurate diagnosis is the starting point for any treatment, and that orthodontists are trained to work from full records: typically X-rays, photographs, and models or digital scans of the teeth. From those records the orthodontist looks at crowding and spacing, how the upper and lower teeth meet, jaw position and growth, gum health, and whether any teeth are missing, stuck, or coming through in the wrong place.

The assessment should answer four questions. First, is treatment needed at all, or is monitoring the right call? Second, what exactly needs to move: teeth only, the bite as well, or jaw relationships too? Third, which appliances could realistically achieve that movement in this mouth? Fourth, what result is realistic, and what would happen if treatment waited a year or did not happen at all?

Orthodontists complete two to three additional years of accredited specialty education after dental school, a point the AAO makes when explaining why the diagnosis matters more than the appliance brand. The family should come out of the assessment with a written plan: the problem list, the proposed appliance, an estimated treatment time, the visit schedule, the retention plan that follows, and the full cost or payment structure. Costs vary widely by case complexity, region, and appliance, so this article gives no prices; a figure quoted without an assessment would not be a reliable guide for your family.

How Braces Work for Teens

Braces move teeth using brackets bonded to each tooth and a wire that runs through them. At adjustment visits the orthodontist changes or tightens the wire and may add small elastic bands, and the light, steady pressure gradually moves teeth into their new positions. Modern brackets are smaller than the braces many parents remember. They are usually metal, and tooth-colored ceramic brackets are a less visible option the AAO lists alongside metal; wires and elastic ties can still show, and teens often choose colored elastics deliberately.

Braces suit a wide range of cases: the AAO’s comparison states that braces can treat most orthodontic problems. Because the appliance is fixed and the orthodontist controls the wire directly, braces can handle movements removable trays struggle with, including significant rotations, moving teeth vertically, closing larger spaces, and bite correction using elastics worn in specific patterns. Braces also keep working on days when a teen is tired or unmotivated, because there is nothing to remember to put back in. That reliability is the strongest general argument for braces in the teen years. The trade-offs are visibility, cleaning effort, and food rules, covered next.

Living With Braces: Food, Cleaning, Sports, and Soreness

Cleaning is the biggest daily job with braces. Brackets and wires trap plaque and food debris, and the AAO is blunt about the standard required: patients must keep teeth, gums, and braces free of plaque so bacteria cannot attack enamel or inflame gums, with frequent brushing and flossing. NHS orthodontic services make the same point from the other side: patients are expected to arrive with healthy teeth and gums and good oral hygiene, and to maintain that standard throughout treatment. Flossing takes longer and usually needs a threader or similar aid to pass floss under the wire. This matters because decay is already common in this age group: the Centers for Disease Control and Prevention (CDC) reports that more than half of adolescents aged 12 to 19 have had a cavity in a permanent tooth, and its baseline advice is brushing twice a day with fluoride toothpaste and asking the dentist about sealants.

Food rules with braces are about protecting the appliance. The AAO advises steering clear of foods that are hard, sticky, crunchy, and chewy, because they can break a bracket or push a wire out of place, and a broken bracket usually means an extra repair visit and can extend treatment. The same guidance suggests water over carbonated drinks, flavored waters, and sports drinks, which can carry acids and sugars that are hard on enamel.

Soreness is normal at the start and after adjustments. The AAO describes the discomfort as usually short-lived and easily managed, and its family guide recommends orthodontic wax over an irritating bracket and soft or cold foods after adjustments. A poking wire, a loose bracket, or pain that keeps getting worse instead of easing is a reason to call the orthodontic office rather than wait for the next routine visit.

For sports, the American Dental Association (ADA) advises that a properly fitted mouthguard is especially important for people who wear braces, because a blow to the face can damage brackets and other fixed appliances, and the guard also forms a barrier that protects cheeks and lips. The ADA adds that teens may need guards replaced more often because their mouths are still growing, and that a removable retainer should not be worn during contact sports.

How Clear Aligners Work for Teens

Clear aligners are a series of thin, clear plastic trays made from a digital model of the teeth. Each set is worn in sequence, and each one puts gentle pressure on the teeth to reposition them slightly, as the AAO describes it. Small tooth-colored attachments are often bonded to certain teeth to help the trays grip and guide movement. Some aligner systems made for younger patients include wear indicators that fade with use, giving a rough check on wear time; families should ask whether the system proposed for their teen has them, rather than assuming.

Aligners are nearly invisible, which is the appeal for many teens. They come out for meals, so there are no food restrictions of the braces kind, and they come out for brushing and flossing, so normal cleaning technique still works. There are no brackets to irritate cheeks and no wires to break, and discomfort usually shows up as pressure for a day or two after switching to a new set.

The conditions attached to those advantages are strict. Aligners are removable, and the AAO sets the wear requirement at a minimum of 22 hours a day, in the correct sequence. Every hour out of the mouth is an hour teeth are not moving, so a teen who leaves trays out for long stretches, loses them at school, or wraps them in a napkin that gets thrown away will see slower or less predictable progress. The AAO also warns against drinking soft drinks, flavored waters, or sports drinks with aligners in, because liquid seeps under the trays and acid and sugar held against the teeth can stain teeth and cause extensive decay. Teeth need to be clean when trays go back in after eating.

Aligner suitability is case-dependent, in the AAO’s wording. Aligners handle many alignment problems well, especially milder crowding and spacing in a teen who will genuinely wear them. More complex movements, severe crowding, teeth that need substantial vertical movement, and bigger bite corrections may still be planned with braces, or a combination approach, for a more predictable result. Our article on whether clear aligners can fix crooked teeth works through who aligners help and where their limits sit.

Braces Compared With Aligners, Side by Side

The table below pulls the comparison together in general terms, following the AAO’s side-by-side comparison. It describes typical cases, not your teen’s case.

Two rows deserve emphasis. Treatment scope is a clinical judgment made from records, not a preference ranking. And both routes end in retainers, so choosing aligners does not avoid the retention stage. Retention is part of orthodontics, full stop.

Specific bite questions cut across this table. An overbite, for example, can be treated with either appliance in some cases and needs braces or additional mechanics in others, depending on whether the problem is tooth position, jaw growth, or both. Our explainer on whether clear aligners fix an overbite covers that bite pattern in full.

What the Research Says, in Plain Terms

Marketing for both appliances tends to run ahead of the evidence, so it is worth saying what the published literature does and does not show for teenagers specifically.

A systematic review summarized in Evidence-Based Dentistry in 2020, covering trials of removable clear aligners against conventional fixed appliances in patients whose mean ages ran from 15 to 33, found that aligners could align teeth successfully but had difficulties achieving full occlusal contacts, correct front-to-back position, and vertical tooth movement, and that aligner cases in some studies were more prone to relapse afterward. It found no significant difference in overall treatment time. A 2024 systematic review of aligners in growing patients, published in the journal Children, reached a cautious conclusion of its own: there are still few high-quality randomized trials directly comparing aligners with fixed appliances in children and adolescents, which limits how confidently anyone can declare one option better for growing patients overall.

Read together, those reviews support the position the AAO takes. For milder to moderate teen cases, aligners are a legitimate treatment, not a cosmetic shortcut. For complex movements, braces retain advantages that show up in the outcome measures researchers use. Any claim that one appliance is simply faster or better for all teens is not supported; treatment time in the studies was broadly similar, and case complexity drove the timelines. Teen treatment commonly runs between about one and two years, with complex cases taking longer, sometimes toward three years; the range your orthodontist quotes after assessment is the one to plan around.

Cost, Time, and Lifestyle Questions to Work Through

Three practical factors shape the decision alongside the clinical one. On time, ask for the estimated length for each option in your teen’s case, what could extend it, and how often visits are scheduled, since appointments recur throughout treatment and have to fit around school. On cost, the total depends on complexity, treatment length, appliance, and where you live, and insurance coverage varies by plan. Ask what the quoted figure includes, since records, adjustment visits, repairs, the first retainers, and retention checkups are sometimes bundled and sometimes not, and ask what a lost aligner set or replacement retainer costs, because those are the surprise expenses families most often meet. On lifestyle, sports point toward the mouthguard discussion above either way, and instruments, singing, and public speaking are worth raising at the assessment. The most honest lifestyle question is about routine: a teen with a reliable routine is a different aligner candidate from a teen who regularly loses chargers, lunch boxes, and homework. Neither answer is a character judgment. It is treatment planning.

Questions to Ask at the Assessment

• Is my teen’s case mild, moderate, or complex, and what exactly needs to move?
• Would braces and aligners each give a predictable result here, or is one clearly stronger for this case, and why?
• How long is treatment expected to take with each option, and how often are visits?
• What happens if aligners are not worn enough, are lost, or a bracket breaks repeatedly?
• What cleaning routine do you expect, and will you show my teen how to floss with braces or care for trays?
• What is included in the total cost, and what do replacement trays, repairs, and replacement retainers cost?
• What does the retainer plan look like after treatment, and for how long?
• What should we do between visits if something breaks, hurts more than expected, or a tray cracks?

Clear answers tell the teen exactly what they are committing to, which is one of the best predictors of whether the daily parts of treatment actually get done.

After Treatment: Retainers Hold the Result

Active treatment ends; retention begins. Retainers hold teeth in their new positions while the bone and gum tissues around them stabilize, and the AAO explains why this stage cannot be skipped: teeth are not set in stone, the fibers around them relax and remodel, and small natural shifts can happen at any age. Without retention, teeth tend to drift back, a process called relapse, and the drift is fastest right after appliances come off.

Retainers may be removable, often worn at night over the long term, or fixed, bonded behind the teeth. Many teens end up with one of each. The AAO’s practical tips are worth following literally: follow the wear schedule, keep retainers clean without hot water, store them in a case and never in a napkin, and treat a retainer that suddenly feels tight as a sign that teeth have moved, which means resuming consistent wear and calling the orthodontist. A cracked, warped, or lost retainer should be replaced promptly, because teeth can move in the gap. Our separate guide on what to know before you get a retainer covers retainer types, wear schedules, and replacement in full. If a retainer no longer fits at all, or teeth have visibly shifted, contact the orthodontist promptly; caught early, a small relapse is sometimes corrected with a short course of active treatment.

When to See a Dentist or Orthodontist

Book an orthodontic assessment if your teen has crowding, spacing, a bite that does not meet evenly, difficulty chewing or biting, frequent cheek biting, protruding front teeth, or teeth that are hard to keep clean despite good brushing. Those are the signs the AAO lists as reasons to schedule an evaluation. A child who has never had the recommended checkup by age 7 should have one, whatever their current age.

Contact a dentist or orthodontist promptly, rather than at the next routine visit, if any of the following happen during treatment: pain that is severe or getting worse instead of easing; swelling of the face or gums; a broken appliance with a sharp wire that cannot be covered with wax; a lost or cracked aligner tray or retainer; bleeding that does not stop; or a blow to the face or mouth during sports. General dental problems, such as toothache or a chipped tooth, go to your regular dentist, who stays part of care throughout treatment; orthodontics does not replace routine checkups and cleanings.

Frequently Asked Questions

Are braces or aligners better for teens?

Neither is better in general. Braces can treat most orthodontic problems, including complex cases, and do not depend on wear time. Aligners are nearly invisible and removable, but must be worn at least 22 hours a day and suit some cases better than others. The right choice depends on case complexity and on how reliably the individual teen will wear a removable appliance, as judged at an orthodontic assessment.

How long does teen orthodontic treatment take?

Many teen cases run between about one and two years, and complex cases can take longer, sometimes toward three years. Research comparing the two appliances found no significant overall difference in treatment time. Your orthodontist can give a case-specific range after assessment, and missed visits, broken brackets, or under-worn aligners are the common reasons treatment runs past its estimate.

At what age should a child first see an orthodontist?

The AAO recommends a first orthodontic checkup no later than age 7, when a mix of baby and permanent teeth lets an orthodontist evaluate how the teeth and jaws are developing. That visit usually leads to monitoring or a limited early step, not full braces. Full teen treatment typically begins once most permanent teeth have erupted, in the early teenage years.

Do aligners work if a teen keeps taking them out?

No. Aligners move teeth only while they are worn, and the AAO sets the minimum at 22 hours a day, removed only for eating, drinking anything other than water, and cleaning. A teen who regularly leaves trays out will see slower progress and a less predictable result, and may be advised to switch to braces. Honesty about routine at the assessment leads to a better appliance choice than optimism.

Can a teen play sports with braces or aligners?

Yes, with protection. The ADA advises that a properly fitted mouthguard is especially important for people who wear braces, because a blow to the face can damage brackets and injure cheeks and lips. Teens may need guards replaced more often as their mouths grow, and a removable retainer or similar appliance should not be worn during contact sports.

Do teens still need retainers after braces or aligners?

Yes, after both. Retainers hold teeth in their new positions while bone and gums stabilize, and teeth naturally tend to shift without them, especially in the first year after treatment. Removable retainers are commonly worn at night over the long term; some retainers are fixed behind the teeth. A retainer that breaks, is lost, or stops fitting should be dealt with promptly, because teeth can move quickly without retention.

What if my teen refuses to wear aligners or hates the idea of braces?

Raise it at the assessment rather than after an appliance is chosen. A teen who will not wear aligners for 22 hours a day is usually better served by fixed braces, which work without that daily decision. A teen who dreads visible braces may do well with tooth-colored ceramic brackets or, where the case allows, aligners. Orthodontists plan around motivation routinely; what matters is that the plan matches the teen who has to live with it.

Keep reading: Invisalign for Teens: A Parent Guide

Sources & references

• American Association of Orthodontists (AAO), "Aligners vs. Braces: A Comparison," aaoinfo.org. The side-by-side comparison of visibility, removability, diet, hygiene, discomfort, and treatment scope; the minimum 22 hours a day aligner wear requirement; brace food and drink guidance; the statement that all patients need retainers after treatment; and orthodontist specialty training.
• American Association of Orthodontists (AAO), "Your Guide to Orthodontic Health," aaoinfo.org. The first orthodontic checkup no later than age 7; teen treatment window and common teen concerns; signs that call for an evaluation; mouthguard, wax, and soft food guidance for teens; and retainer wear, care, and replacement advice.
• American Dental Association (ADA), MouthHealthy, "Mouthguards," mouthhealthy.org. Mouthguard importance for people who wear braces, the barrier a guard provides for cheeks and lips, not wearing a retainer or other removable appliance during contact sports, and more frequent mouthguard replacement for growing teens and children.
• Centers for Disease Control and Prevention (CDC), "Oral Health Tips for Children," cdc.gov, page dated May 15, 2024. Cavities as the most common chronic disease of childhood; more than half of adolescents aged 12 to 19 having had a cavity in a permanent tooth; brushing twice a day with fluoride toothpaste; dental sealants preventing 80 percent of cavities in back teeth.
• King's College Hospital NHS Foundation Trust, "Orthodontics," kch.nhs.uk. Orthodontics as the dentistry of tooth, jaw, and face growth; the conditions orthodontic services treat; and the requirement for healthy teeth and gums and good oral hygiene before and during treatment.
• Evidence-Based Dentistry (2020), summary of a systematic review of clear aligners versus conventional fixed appliances, via PubMed (PMID 32221494). Aligner effectiveness for alignment and crowding, limitations in occlusal contacts, front-to-back position, and vertical movement, greater relapse susceptibility in some studies, and no significant difference in treatment time.
• Children (2024), "Clear Aligners in the Growing Patient: A Systematic Review," via PubMed Central (PMC11049164). The limited number of high-quality randomized trials directly comparing aligners with fixed appliances in growing patients, and the resulting caution about declaring either option superior for children and adolescents.