Invisalign or Braces? What the Evidence Says, and Where to Start
Here’s a number that reframes this whole decision: clear aligners deliver roughly half of the tooth movement the 3D simulation predicts.
Early research put the accuracy of predicted movement at 41%. After the SmartTrack material was introduced it improved to about 50%. That’s not a scandal; treatment plans are built with it in mind, which is why refinement aligners exist and why most courses include extra sets. But it explains a great deal about why aligner treatment sometimes takes longer than the animation on the screen suggested, and it’s rarely mentioned in the consultation.
Both work, but not equally. Clear aligners deliver roughly half the tooth movement their 3D simulation predicts, and struggle with rotations and extrusion; fixed braces handle every case type and require no compliance. Neither is reliably faster — case complexity sets the timeline. Aligners need 20 to 22 hours of wear a day, and measured wear averages closer to 15. Clear aligners suit mild to moderate adult cases; children, teenagers, and complex cases need an orthodontist.
Both aligners and braces work. They don’t work equally well at everything, and the comparison worth having is the one that says where the difference lies.
Are clear aligners as effective as braces?
The strongest synthesis available, covering eleven studies and 887 patients, concluded in its own words that “current evidence does not support the clinical use of aligners as a treatment modality that is equally effective to the gold standard of braces.”
Specifically, aligner cases scored measurably worse on standardized assessment of finished results, and carried a relative risk of an unacceptable outcome around 1.6 times that of fixed appliances.
That doesn’t mean aligners fail. It means the gap widens as cases get harder, and the difference is real rather than a matter of preference.
One caveat about sourcing: as of August 2026 there is no Cochrane review comparing clear aligners with fixed braces, so any article citing one is worth double-checking.
Which tooth movements do aligners struggle with?
Effectiveness depends less on overall severity than on the type of movement required.
| Movement | How aligners perform |
|---|---|
| Tipping, mild crowding, small gaps | Well. This is their strength |
| Rotating round-rooted teeth | Poorly. Upper canines around 48% accuracy, lower canines around 50% |
| Large rotations (over 15°) | Around 19% accuracy |
| Extrusion (pulling a tooth down) | Around 30% accuracy, their weakest movement |
| Complex bite correction, skeletal issues | Fixed appliances generally preferred |
Braces grip each tooth directly and apply continuous three-dimensional control, which is why they handle rotation and extrusion better. Aligners work by pressing a shell against a tooth surface, which is excellent for tipping and much harder for twisting or pulling.
A real-world figure worth knowing: in a series of 500 consecutive Invisalign patients, 17.2%, about one in six, were switched to fixed braces during treatment. Only 6% finished without any refinement stage.
Is Invisalign faster than braces?
Aligners being quicker than braces is one of the most repeated claims in this space, and better-designed research doesn’t support it. Two systematic reviews found no significant difference in treatment duration.
The older studies that showed aligners finishing around six months sooner were comparing milder cases: nine of ten studies in one review involved non-extraction treatment only. That’s not aligners being faster; it’s easier cases being faster.
And in practice, mean real-world Invisalign treatment ran 22.8 months, about five months longer than what patients were told to expect at the outset.
If speed is your priority, what determines your timeline is the complexity of your case, not the appliance.
How many hours a day do you have to wear aligners?
Align’s guidance is 20 to 22 hours a day, removing aligners only for eating, drinking anything other than water, and brushing. The American Association of Orthodontists is stricter, specifying a minimum of 22 hours.
What actually happens is different. When wear time was measured objectively with microsensors, patients averaged 15.2 hours a day. That fell to 13.7 hours when they didn’t know they were being monitored, and rose to 16.7 when they did.
This is the crux of the decision for a lot of families. Aligners only work if they’re in your mouth, and the gap between prescribed and actual wear is where treatment plans slip. Braces remove the question entirely; they work around the clock and require no daily decision.
For a motivated adult, that’s usually manageable. For a younger teen, or anyone whose routine is genuinely unpredictable, it’s the single most important factor and it’s more predictive of success than anything about the appliances themselves.
How do aligners and braces compare day to day?
| Clear aligners | Fixed braces | |
|---|---|---|
| Appearance | Nearly invisible | Visible; ceramic less so |
| Comfort | Smooth plastic; pressure after each change | Brackets and wires can irritate cheeks and lips |
| Removable | Yes | No |
| Food restrictions | None, since they come out to eat | Avoid hard and sticky foods |
| Oral hygiene | Easier; brush and floss normally | Harder; requires cleaning around brackets |
| Appointments | Every 6–8 weeks; visits are usually brief | Every 4–8 weeks for adjustments |
The hygiene difference deserves emphasis because it has consequences beyond convenience. Cleaning around fixed brackets is genuinely harder, and decalcification, which leaves permanent white marks on enamel, is a real risk with poor hygiene during braces treatment. It’s preventable with good technique and regular cleanings, and it’s one of the specific things worth staying on top of during treatment regardless of which appliance you choose.
Do you need a retainer afterward?
Whichever route you take, teeth drift back toward their original positions. This is the most common reason people who paid for straight teeth don’t have them a few years later.
Expect full-time retainer wear at first, then nightly indefinitely. Not for a year — indefinitely. If retainers are presented to you as a short postscript to treatment, ask again.
Does insurance cover orthodontics?
Orthodontics usually sits in its own category, separate from the preventive/basic/major structure that covers the rest of dentistry, and it’s capped by a lifetime orthodontic maximum rather than an annual one. Once you’ve used it, no further orthodontic benefit is paid on that plan. Ever.
Two things follow. Check your remaining lifetime balance before starting, not after, particularly if you had orthodontic work as a teenager. And check whether your plan covers adults at all: many group plans limit orthodontic benefits to dependent children.
The Canada Dental Care Plan does not currently cover orthodontics. A limited range of coverage has been planned since the program launched, but as of August 2026 it isn’t available and no start date has been announced.
Where to start in Maple Ridge
Orthodontic treatment begins with an assessment, and the useful thing to understand is that the appliance question comes second. What matters first is what kind of movement your case actually needs, because that’s what determines whether aligners are a sensible option at all.
Mellow Family Dental Care provides clear aligner treatment for straightforward adult cases, using SureSmile. SureSmile is a clear aligner system in the same category as Invisalign — the comparison in this article between aligners and fixed braces applies to it in the same way, because the evidence above is about the aligner approach rather than any one brand.
The word doing the work in that sentence is straightforward. Aligners suit mild to moderate crowding and spacing in an adult with a healthy bite. They are a poor fit for the movements described earlier — significant rotations, extrusion, large bite corrections — and for growing patients whose treatment has to account for jaw development. So we refer, and we are direct about it:
- Children and teenagers go to an orthodontist. Growth changes the treatment plan, and that is a specialist’s work.
- Complex adult cases go to an orthodontist — anything needing the movements aligners handle badly, or where fixed braces are simply the better tool.
If your case is not a good aligner case, we would rather tell you at the assessment than start something that will not get you where you want to go. Around that, we also provide:
- Assessment and diagnostic records: exam, digital x-rays, intraoral photographs, and diagnostic models, so you begin the conversation with real information rather than a sales consultation.
- Getting your mouth ready. Active decay and gum disease should be treated before orthodontic treatment begins. Starting with untreated problems locked behind brackets or aligners is a genuinely bad outcome.
- Hygiene through treatment. Regular cleanings during orthodontics are the main defence against decalcification and gum inflammation.
- Referral and coordination with an orthodontist for cases outside what aligners do well, with your records going along.
- Afterwards: night guards, and whitening once treatment is complete and your teeth are in their final positions.
If you’re at the “should I even be thinking about this” stage, raise it at your next checkup before committing to a consultation anywhere.
Common questions
Which is more effective? Braces, on the current evidence, particularly for complex movements: rotations, extrusion, and skeletal bite problems. Aligners perform well on mild-to-moderate crowding and spacing in non-growing patients.
Which is faster? Neither, once you compare like cases. Case complexity drives the timeline. Real-world aligner treatment has averaged around 23 months.
Is Invisalign suitable for teens? It can be, and teen-specific products exist. The deciding factor is whether the aligners will actually be worn, not the patient’s age. Measured wear averages well below what’s prescribed.
Do I have to wear a retainer forever? Effectively, yes: nightly, long-term. Teeth continue to shift throughout life whether or not you had orthodontic treatment.
Does insurance cover orthodontics? Often partially, against a lifetime maximum rather than an annual one. Many group plans restrict it to dependent children. The CDCP doesn’t cover it at all as of August 2026. More on insurance.
Can I get aligners without seeing anyone in person? Mail-order aligner services exist. They skip the clinical exam and radiographs, which is how underlying decay, gum disease, or root problems get missed, and orthodontic force applied to a periodontally compromised tooth can do lasting damage. An in-person assessment before any tooth movement is a reasonable minimum standard.
Does Mellow Family Dental Care do clear aligners? Yes. We provide clear aligner treatment using SureSmile for straightforward adult cases — mild to moderate crowding or spacing in a patient with a healthy bite. Children, teenagers, and complex adult cases are referred to an orthodontist, because growing patients and difficult tooth movements need specialist care.
Do I need an orthodontist or can my dentist do it? It depends on the case. Straightforward adult crowding and spacing can be treated with clear aligners at a general practice. Cases involving significant rotations, extrusion, large bite corrections, or a patient who is still growing should be treated by an orthodontist. An assessment tells you which category you’re in.
Want a look at your teeth and a straight answer about whether your case is a good aligner case? Call Mellow Family Dental Care at 604.457.2273 or visit Unit 150–20528 Lougheed Highway in West Maple Ridge.
Sources: Papageorgiou SN, et al. Clinical effectiveness of Invisalign orthodontic treatment: a systematic review and meta-analysis. European Journal of Orthodontics 2020. · Haouili N, Kravitz ND, et al. Has Invisalign improved? A prospective follow-up study. AJO-DO 2020. Link · Koletsi D, et al. Effect of clear aligners on tooth rotation. Journal of Orthodontics 2021. Link · Alhamwi et al. Clinical Oral Investigations 2024. Link · American Association of Orthodontists — braces vs. clear aligners · CDCP coverage
Mellow Family Dental Care provides clear aligner treatment (SureSmile) for straightforward adult cases, along with assessment, diagnostic records, pre-treatment care, hygiene support during treatment, retainers, and referral. Children, teenagers, and complex adult cases are referred to an orthodontist. This article is general information and does not replace an in-person orthodontic evaluation.
