Invisalign vs Braces: How an Orthodontist Decides

Neither appliance wins across the board. The right tool depends on which tooth movements your bite needs [4].

Aligners are less accurate at some movements, especially rotating canines and premolars [1][2].

In a 500-patient study, about 1 in 6 aligner patients finished with braces, averaging 6.9 extra months [1].

Sectional braces put brackets on a few teeth for one defined job, then treatment returns to aligners [13].

Real-world aligner treatment averaged about two years, in line with braces [1].

Age doesn't predict aligner success. Daily wear of 20 to 22 hours does [1][6].

The fee depends more on complexity and length than on the appliance [15].

One liner: Ask which movements your bite needs, and plan each tool where it does the job best.

17.2% (about 1 in 6) of aligner patients switched to braces to finish: Kravitz et al., AJODO, 2023 [1]

6.9 extra months of braces for those who switched: Kravitz et al., 2023 [1]

2.5 refinement scans on average; 6% needed none: Kravitz et al., 2023 [1]

22.8 months actual vs 17.7 months estimated aligner treatment: Kravitz et al., 2023 [1]

50% mean accuracy of planned movement after the first aligners (41% in 2009): Haouili et al., AJODO, 2020 [2]

About 1.6 times as likely to finish with a result graded unacceptable with aligners: Papageorgiou et al., Eur J Orthod, 2020 [3]

20 to 22 hours a day of aligner wear (AAO: at least 22): Align; AAO, accessed 2026-09-30 [6][4]

2 to 3 years of residency after dental school to become an orthodontist: AAO, accessed 2026-09-30 [21]

About $1,772 average US orthodontic coverage for insured patients: Align citing OrthoFi, 2021 data [17]

In short: neither one wins across the board. The right plan depends on the movements your teeth need.

Is Invisalign better than braces? Both straighten teeth, but they don't move every tooth equally well. Aligners are less predictable with certain movements, such as rotating canines and premolars [1][2]. That's why an orthodontist's plan may use aligners, braces, or a combination of both, matched to the movements your bite needs [4].

The American Association of Orthodontists makes the same point from another angle: there's no single right way to do orthodontic treatment [5]. The table shows where each tool tends to be strong.

Clear aligners vs braces at a glance

How it moves teeth. Clear aligners (such as Invisalign): A series of custom trays, each shaped a little closer to the goal. Braces: Brackets bonded to the teeth, guided by a wire the orthodontist adjusts.

Removable. Clear aligners (such as Invisalign): Yes, taken out to eat, drink and brush [4]. Braces: No, fixed in place for the whole phase.

Daily wear. Clear aligners (such as Invisalign): 20 to 22 hours a day [6]. Braces: Always on.

What the research favors it for. Clear aligners (such as Invisalign): Tipping a tooth's crown toward the cheek or tongue [2]. Braces: Root angulation, tooth inclination and final bite contacts [3].

Main trade-off. Clear aligners (such as Invisalign): Results depend on wearing the trays as prescribed [6]. Braces: Visible hardware and more effort to clean around brackets [5].

Can it be combined with the other? Clear aligners (such as Invisalign): Yes, a plan may use both [4]. Braces: Yes, a plan may use both [4].

Most people don't need a winner. They need to know which movements their own bite calls for, and that starts with a specialist's exam.

In short: many strong plans use both tools, aligners for most of the work and a short phase of braces for the movements aligners struggle with.

The American Association of Orthodontists says an orthodontist's recommendation may include aligners, braces, or a combination of approaches [4]. Most comparison charts skip that third option. Yet it's the one that fits a lot of real bites.

The research shows why. In a study of 500 patients treated at two US orthodontic practices, 17.2% (about 1 in 6) switched from Invisalign to braces to finish treatment [1]. Those patients averaged an extra 6.9 months in braces. The authors concluded that patients starting aligners should reasonably expect a short duration of braces may be needed [1].

Refinements tell a similar story. A refinement is a new scan and a fresh set of aligners when teeth haven't tracked with the plan. Only 6% of patients in that study finished without one, and the average was 2.5 [1]. The authors called refinements a necessary part of aligner treatment, comparable in some ways to repositioning a bracket on braces [1].

Two details keep that 1 in 6 figure in context. It counts switches that happened partway through treatment. Some patients switched almost immediately, while others went through seven or eight refinement scans first [1]. It also comes from two practices, so it describes their patients, not every office.

Picture two versions of the same case. In one, a patient learns well into treatment that two teeth won't track, and brackets go on as a fix. In the other, the plan says on day one that a lower canine may need a few months of brackets. That phase gets scheduled where it helps most. Same teeth, a different experience.

That planned approach is what the next sections build on: which movements aligners handle reliably, and when a short phase of sectional braces does the job better.

In short: both move teeth with steady, gentle pressure. The daily routine is where they feel most different.

Both tools rely on the same biology. Steady pressure on a tooth lets the bone around it remodel, so the tooth can shift into a new spot [8]. Braces deliver that pressure through brackets bonded to each tooth and a wire the orthodontist adjusts. Aligners deliver it through a series of clear trays, each worn for about a week and shaped one step closer to the finished bite [4].

Think of braces as steering and aligners as stepping stones. Aligners often need help to grip, too. Small tooth-colored bumps called attachments are bonded to some teeth, and aligners can be paired with the same elastics used with braces [4].

The bigger differences show up at meals and at the sink.

Daily life with aligners vs braces

Eating. Aligners: Come out for meals, so no food is off-limits for the appliance. Only water while they're in [11]. Braces: Sticky and hard foods can pull brackets off or bend wires [11].

Brushing and flossing. Aligners: Trays come out, so your routine stays close to normal [4]. Braces: Takes more time and care around brackets [5].

First week. Aligners: In one trial, adults reported less pain and fewer daily disruptions with Invisalign [9]. Braces: More pain and more pain medicine use in that same trial [9].

Early oral health. Aligners: Lower plaque scores in the first 6 to 12 weeks for aligners without attachments, based on low-certainty evidence [10]. Braces: More cavity-linked bacteria in the first 3 to 6 months [10].

Removability is the biggest perk and the biggest risk. Aligners only move teeth while they're in your mouth. A tray that spends half the day in its case stalls the plan.

In short: "complex" isn't one thing. Aligners handle some movements well and others less predictably, and that list shapes the plan.

When people ask about Invisalign for complex cases, they usually picture a bad bite as one hard problem. An orthodontist breaks it into movements instead. Crowding, a deep overbite, a crossbite and an open bite each need a different mix of tipping, turning and sliding teeth. NRH's page on common bite problems shows what each one looks like.

Aligners aren't equally good at all of those movements. In a 2020 study of 38 patients, the first set of Invisalign trays achieved about 50% of the movement planned in the software [2]. That was up from 41% in the same group's 2009 study of front teeth [1]. Tipping a tooth's crown toward the cheek or tongue was the most accurate movement, and rotation was the least [2].

Movements research flags as harder for aligners

Rotating canines and premolars: Turning a rounded tooth on its long axis [1][2]

Lower incisor intrusion: Moving lower front teeth deeper into the bone, often to open a deep bite [1]

Closing extraction spaces: Sliding a whole tooth, root and all, into a gap [1]

Root angulation and final bite contacts: Getting roots parallel and teeth meeting evenly at the end [3]

Those accuracy numbers need a fair reading. The same researchers point out that 50% accuracy doesn't make aligners 50% effective [1]. The gap is why refinement scans are a routine part of treatment.

A 2020 meta-analysis looked at finished results. Across three studies, aligner patients scored worse on the American Board of Orthodontics grading system [3]. They were also about 1.6 times as likely to finish with a result graded unacceptable. The gaps sat in the same areas as the table: root position, tooth inclination and how the teeth meet [3].

None of that rules aligners out for complex bites. Align reports that more than 1.9 million patients with complex issues have been treated with Invisalign since 2011 [12]. It means a good plan names the hard movements early and picks the right tool for each.

In short: sectional braces put brackets on a few teeth for one defined job, then come off so the plan can return to aligners.

Sectional braces are brackets bonded to a few teeth instead of the whole arch. People also call them partial braces. They're used for a specific movement, for a limited time, and then removed. At NRH Orthodontics, that's how braces fit into an aligner-first Invisalign treatment plan: as a short, precise step, followed by a transition back to aligners [13].

NRH's own pages name three situations where that step earns its place [7][13].

An impacted tooth. This is a tooth that can't fully erupt because other teeth or a lack of space are blocking it [14]. A tray can't reach up and pull it down. A bracket bonded to that tooth gives the orthodontist something to guide it with.

A severely tipped molar. Uprighting a molar means moving its root, not only its crown. Root position is one of the areas where aligners scored worse in the research [3], so a bracket and wire do the job more predictably.

A limited early-treatment phase. Some younger patients need a short, targeted correction before the main plan starts. Brackets on a few teeth can handle that step on its own.

Picture a canine sitting high in the gum while the rest of the arch lines up. Trays alone would keep asking it to move without anything to hold. A short phase of brackets guides it into place, and then clear aligners take over again.

That's different from a full switch partway through. In the 500-patient study, patients who moved from aligners to braces midway averaged 6.9 more months of braces [1]. A targeted phase that's planned from the start is meant to avoid that surprise.

NRH says it plainly in its own FAQ: braces have a real role for certain movements, and claiming otherwise wouldn't be honest [7][13].

In short: neither is reliably faster. Real-world aligner treatment runs about two years, in line with braces.

Neither one is faster across the board. In the 500-patient practice study, aligner treatment averaged 22.8 months, about two years, which the authors note is the same range reported for braces [1]. A meta-analysis of comparison studies also found no significant difference in treatment time [3].

So where do the speed claims come from? Align advertises Invisalign as 5 months faster than braces, and its shortest published timelines are based on mild to moderate cases [15]. Simpler bites can finish sooner. Complex ones rarely follow the fast track, whichever appliance moves them.

The more useful number is the gap between the estimate and reality. In that same study, patients were quoted 17.7 months at their consultation and finished at 22.8, a 5.1-month difference [1]. The authors said their data refuted marketing claims that Invisalign works faster, and that realistic estimates help patients decide well [1].

What stretches a timeline? Mostly three things: how hard the movements are, how many refinement scans the teeth need, and how many hours a day the trays are actually worn [1][15]. A braces phase that's discovered late adds months. One that's planned from the start is already on the calendar.

At NRH, patients scan their teeth at home each week and Dr. Basma Fallah reviews every scan herself [13]. A tray that isn't tracking gets caught at the next scan instead of at an appointment months later. In-office visits can be as infrequent as every six months [13]. That means fewer trips to the office, not a promise of a shorter treatment.

In short: the case sets the fee more than the appliance does. Complexity and length move the number most.

When it comes to Invisalign vs braces cost, the appliance matters less than people expect. Even Align describes the cost of braces and clear aligners as comparable [15]. What moves the fee is how much work the case needs.

Complexity and length come first. More movements, harder movements and a longer timeline all take more planning and more appliances. In the 500-patient study, patients who switched to braces used about 81 aligners on average, against 64 overall, before their braces phase even began [1]. Every refinement and every late change adds work the fee has to cover.

That's why the cheapest quote isn't always the lowest cost. NRH makes the same point on its financial page. Retainer fees and charges beyond an initial term can add up over a full course of care [16]. Ask what a quote includes before comparing two numbers.

At NRH, the fee includes CBCT imaging and an airway evaluation in the first workup [7][16]. It also covers Dr. Fallah's weekly scan reviews. Payment options include:

Interest-free, in-office payment plans

CareCredit for longer terms

Most major PPO orthodontic insurance, with claims filed by the office (Medicaid isn't accepted)

Pre-tax dollars from a flexible spending account

For a sense of scale, Align cites national data on US patients with dental coverage. Their orthodontic benefits averaged about $1,772 in 2021 [17]. Your own plan may differ. NRH verifies benefits and puts the full fee in writing before treatment begins [16].

In short: age alone doesn't predict who does well with aligners. Daily wear does, and weekly check-ins make it visible.

Parents often assume a teenager is the riskier aligner patient. The research doesn't back that up. In the 500-patient study, patients under 20 were no more likely than older adults to switch to braces [1]. The authors said their data disproved the idea that adults are more compliant than teenagers.

What does matter is wear time. Align recommends 20 to 22 hours a day [6], and the AAO says at least 22 [4]. Do the math, and meals, snacks and brushing all have to fit inside about two hours a day.

Braces take the daily decision away, since they can't come out. They still ask something of a teen, though: avoiding hard and sticky foods and brushing carefully around brackets [11].

For parents, the harder part is knowing whether the trays are in. Asking "Did you wear them today?" at dinner tells you little. At NRH, patients scan their teeth at home every week and Dr. Fallah reviews each scan herself [13]. If teeth aren't tracking, it shows up on the scan, and the conversation happens that week instead of months later.

Some teens won't keep trays in, and that's a real reason to plan differently. A specialist will say so at the consult rather than hope it works out.

For younger children, the AAO recommends a first orthodontic check-up no later than age 7 [18]. Early evaluation isn't the same as early treatment. Most children seen at that age are simply monitored [7].

In short: adults can do well with either. Finished growth, past dental work and gum health shape the plan more than age does.

The biggest difference with adults is that jaw growth is finished. Adult mouths also tend to carry crowns, fillings, wear or gum history [19]. All of that affects how a case is sequenced and how long it runs. The AAO adds that gum health has to be checked in person before teeth are moved [8].

Adults may need more fine-tuning, too. In the 500-patient study, patients over 30 needed significantly more refinement scans, but they were no more likely to switch to braces [1]. More adjustments, same appliance.

A common adult story: braces as a teen, a retainer left in a drawer, and front teeth that slowly drifted back. That relapse is treatable and common at NRH, as are patients told elsewhere that their case couldn't be done with aligners [19]. Both are routine in NRH's adult orthodontics work. If braces are the right answer for part of the plan, the patient hears that too [19].

Day to day, clear trays stay discreet through meetings and meals [19]. In the first-week trial, adults on Invisalign also reported less pain than adults in fixed braces [9].

In short: the plan starts with a full workup and matches each tooth movement to the tool that does it best.

Dr. Basma Fallah has been a Diplomate of the American Board of Orthodontics since 2007 [20]. She has practiced for 22 years, 16 of them in North Richland Hills. Like every orthodontist, she finished two to three years of specialty residency after dental school [21]. Her practice is aligner-first.

Here's how a plan comes together:

1. Full records. Every patient gets a low-radiation 3D CBCT scan and an airway screening as part of the standard workup [7][20].

2. A movement-by-movement plan. Dr. Fallah reviews every record herself [22]. Each movement the bite needs gets matched to a tool.

3. Aligners as the main tool. Treatment runs on clear aligners such as Invisalign or Spark [22]. If an impacted tooth, a tipped molar or an early phase calls for brackets, sectional braces are used as a short, precise step [13].

4. Weekly review. You scan at home each week, and she reads every scan herself [13].

5. A written plan. The full fee and plan are in writing before you commit [16].

That order matters. When the hard movements are named at the start, a short braces phase is part of the schedule instead of a surprise halfway through.

The practice has one office in North Richland Hills. Thanks to remote monitoring, some patients travel from as far as Houston and Dallas [13]. To find out which tool your own bite needs, request a consultation or call (817) 581-8881.

Not across the board. Each tool moves some teeth more reliably than the other, and aligners are less accurate at rotating canines and premolars [1][2]. An orthodontist can plan aligners, braces, or a mix of both, based on the movements your bite needs [4].

Yes. In a study of 500 aligner patients, 17.2% (about 1 in 6) switched to braces to finish, and they averaged an extra 6.9 months in braces [1]. Planning a short braces phase from the start, where a movement needs one, can help avoid a surprise switch later.

Yes. Both terms mean brackets bonded to a few teeth instead of the whole arch. At NRH, they're used as a short, precise step for jobs like guiding an impacted tooth or uprighting a severely tipped molar, followed by a return to aligners [13].

Often, yes. NRH corrects most bite patterns, overbites included, with an aligner-first plan [14]. Deep bites that need the lower front teeth moved deeper into the bone are among the harder movements for aligners [1], so some cases add brackets for that step.

Often, yes. Align lists both options as covered by many insurance plans [15]. Limits depend on your own plan, so NRH verifies benefits before treatment begins. The office accepts most major PPO orthodontic plans and files the claims for you [16].

Yes, after either one. When active treatment ends, a retainer holds the result [13]. Teeth straightened years ago can drift again, often because a retainer was set aside, and that's one of the most common reasons adults come back for treatment [19].

Most adults and many teens are, but it's a clinical call. At NRH, candidacy is decided at your evaluation, with 3D imaging, by a board-certified orthodontist [13]. If part of your bite needs brackets, a short sectional braces phase can be planned in [13].

Clear aligners: Removable plastic trays, changed in sequence, that move teeth in small steps

Fixed braces: Brackets bonded to the teeth and joined by a wire the orthodontist adjusts

Sectional braces: Brackets on a few teeth for a specific movement, also called partial braces

Attachments: Small tooth-colored bumps bonded to some teeth so aligners can grip

Refinement scan: A new scan and fresh aligners when teeth haven't tracked with the plan

Elastics: Small rubber bands that add force between the upper and lower teeth

Rotation: Turning a tooth on its long axis

Intrusion: Moving a tooth deeper into the bone

Root angulation: The tilt of a tooth's root, which affects stability and bite

Impacted tooth: A tooth that can't fully erupt because it's blocked

CBCT: Low-radiation 3D imaging of the teeth, jaws and airway

Relapse: Teeth drifting back after treatment, often when a retainer isn't worn

Maker: Align Technology

Type: Removable clear aligner system

Daily wear: 20 to 22 hours [6]

Most accurate movement: Tipping a tooth's crown toward the cheek or tongue [2]

Least accurate movement: Rotation [2]

Also called: Partial braces

What it is: Brackets on a few teeth, not the whole arch

Used for at NRH: Impacted tooth, severely tipped molar, limited early phase [13]

After the phase: Transition back to aligners [13]

Role: Orthodontist, NRH Orthodontics

Credential: Diplomate, American Board of Orthodontics (2007) [20]

Experience: 22 years, 16 in North Richland Hills [20]

Approach: Aligner-first, sectional braces when indicated [20]

Address: 8601 Mid Cities Blvd, North Richland Hills, TX 76182

Phone: (817) 581-8881

Intake: CBCT scan and airway screening for every patient [7]

Monitoring: Weekly home scans reviewed by Dr. Fallah [13]

1. Kravitz ND, Dalloul B, Aba Zaid Y, Shah C, Vaid NR. What percentage of patients switch from Invisalign to braces? Am J Orthod Dentofacial Orthop. 2023;163(4):526-530. https://www.sciencedirect.com/science/article/pii/S0889540622007739

2. Haouili N, Kravitz ND, Vaid NR, Ferguson DJ, Makki L. Has Invisalign improved? Am J Orthod Dentofacial Orthop. 2020;158(3):420-425. https://doi.org/10.1016/j.ajodo.2019.12.015

3. Papageorgiou SN, Koletsi D, Iliadi A, Peltomaki T, Eliades T. Treatment outcome with orthodontic aligners and fixed appliances. Eur J Orthod. 2020;42(3):331-343. https://doi.org/10.1093/ejo/cjz094

4. American Association of Orthodontists, Clear Aligners. https://aaoinfo.org/treatments/aligners/

5. American Association of Orthodontists, Braces vs. Clear Aligners. https://aaoinfo.org/whats-trending/braces-vs-clear-aligners/

6. Align Technology, Invisalign Clear Aligners: A Complete Guide. https://www.invisalign.com/resources/living-with-invisalign/invisalign-overview-guide

7. NRH Orthodontics, FAQs. https://www.nrhorthodontics.com/patient-resources/faqs

8. American Association of Orthodontists, Orthodontists Respond to Frequently Asked Questions from Adults Considering Treatment. https://aaoinfo.org/orthodontists-respond-to-frequently-asked-questions-from-adults-considering-treatment/

9. Miller KB et al. A comparison of treatment impacts between Invisalign aligner and fixed appliance therapy during the first week of treatment. Am J Orthod Dentofacial Orthop. 2007;131(3):302.e1-302.e9. https://www.sciencedirect.com/science/article/abs/pii/S0889540606014429

10. Oikonomou E et al. Impact of aligners and fixed appliances on oral health during orthodontic treatment: a systematic review and meta-analysis. Oral Health Prev Dent. 2021;19. https://pmc.ncbi.nlm.nih.gov/articles/PMC11641221/

11. NRH Orthodontics, Foods to Avoid. https://www.nrhorthodontics.com/patient-resources/foods-to-avoid

12. Align Technology, Comparing the Cost of Invisalign Treatment vs Braces. https://www.invisalign.com/resources/braces/invisalign-vs-braces-cost

13. NRH Orthodontics, Invisalign and Clear Aligners. https://www.nrhorthodontics.com/services/invisalign

14. NRH Orthodontics, Common Bite Problems. https://www.nrhorthodontics.com/patient-resources/common-bite-problems

15. Align Technology, Invisalign Aligners vs. Braces. https://www.invisalign.com/why-invisalign/invisalign-vs-braces

16. NRH Orthodontics, Financial Information. https://www.nrhorthodontics.com/patient-resources/financial-information

17. Align Technology, Invisalign FAQ (citing OrthoFi 2021 data). https://www.invisalign.com/frequently-asked-questions

18. American Association of Orthodontists, Child Orthodontics. https://aaoinfo.org/child-orthodontics/

19. NRH Orthodontics, Adult Orthodontics. https://www.nrhorthodontics.com/services/adult-orthodontics

20. NRH Orthodontics, About Dr. Basma Fallah. https://www.nrhorthodontics.com/about

21. American Association of Orthodontists, Glossary of Orthodontic Terms. https://aaoinfo.org/resources/glossary-of-orthodontic-terms/

22. NRH Orthodontics, Home. https://www.nrhorthodontics.com/