Invisalign vs braces

The choice between clear aligners and fixed braces is usually presented as a cosmetic preference, but it is partly a clinical one: aligners suit some cases well and are a poor fit for others. The fee structures also differ, and the cheaper-sounding quote is not always the cheaper treatment once retainers and visits are counted.

How each appliance works

Fixed braces use brackets bonded to the teeth and a wire that is adjusted periodically by the orthodontist. The appliance works continuously and cannot be removed by the patient, which is why it can correct complex movements that depend on constant force.

Clear aligners are a series of removable trays that move the teeth in planned steps. They are nearly invisible and can be removed for eating and cleaning, but they only work if the patient wears them for the prescribed hours each day. A patient who does not comply is a patient whose treatment does not progress.

Who each one suits

Aligners handle mild to moderate crowding, spacing and some bite corrections well. Fixed braces remain the more reliable tool for severe crowding, significant rotations and complex bite problems, and some cases that begin with aligners are finished with a short period of fixed braces.

Ask the orthodontist which appliance they would choose for their own teeth and why. That question tends to produce a more honest answer than asking which is better in general, because there is no general answer.

Source: Statistics Canada table 326-0020, monthly, not seasonally adjusted. Orthodontic treatment has no published price series; this is the official context for how costs have moved.

The cost structure and the published context

Both appliances are usually quoted as a single fee covering active treatment and a period of retention. The fee depends on the complexity of the case, the number of aligners or the length of treatment, and the practice's overhead. A quote that does not state what is included in retention is incomplete.

Treatment time and the compliance question

Treatment time depends on the case, not the appliance, but the appliance changes how predictable that time is. Braces work continuously, so the estimate is relatively firm. Aligners depend on wear time, so a patient who wears them for fewer hours than prescribed can extend treatment and sometimes need a new set of trays.

Ask what happens if aligners are lost or if treatment runs long. Replacement trays and extended treatment are common costs, and the answer should be in writing before you start.

• Ask which appliance the orthodontist recommends for your specific case and why.
• Ask whether retainers and post-treatment visits are included in the fee.
• Ask what happens if aligners are lost or treatment is extended.
• Ask whether the practice discounts payment in full.

Financing either option

The example below uses the Federal Reserve H.15 bank prime loan rate and a standard amortising schedule. It is arithmetic from a published rate, not a quote, and it lets you compare the practice's in-house plan with an independent benchmark.

Worked example, with the assumption stated: $5,500 borrowed at the Federal Reserve H.15 bank prime loan rate of 6.75% (published 2026-09-16) repaid over 24 months on a standard amortising schedule. That gives a monthly payment of $245.63, total interest of $395.03 and a total repayment of $5,895.03. This is arithmetic from a published rate, not a quote: a real APR includes fees and is set by the lender from your credit, so your figures will differ. If the practice offers an interest-free in-house plan and you clear it in time, that is cheaper than the loan. If it does not, compare the two totals over the same term.

In the United States, an HSA or FSA can sometimes reimburse medically necessary orthodontic treatment. Check the plan rules before assuming it applies, because the account may require documentation.

Questions to settle before treatment

Get the total fee, the down payment, the instalment schedule, the estimated treatment length, what happens if treatment is extended, and what retention includes. Those six items turn a monthly payment into a comparable price.

Ask whether the practice will provide progress records and whether the fee is transferable if you move. Orthodontic treatment is portable in principle, but practices differ on transfer fees and on releasing records, so settle it early.

One more cost to check is the retainer. Both treatments end with retention, and retainers are lost, broken and replaced. Ask whether the initial retainer is included, what a replacement costs, and how long retention is expected to last, because that recurring cost is easy to overlook when comparing two quotes.

Ask whether the practice prices the case as a fixed fee or by the number of aligners, and whether the quoted number is an estimate. Some practices price by the case and some by the tray, and the difference matters if the case turns out to need more aligners than planned.

If the case is borderline between the two appliances, ask for a hybrid plan: aligners for the visible front teeth and a short period of fixed braces to finish the bite. It is not always offered, but it can combine the appearance of aligners with the control of braces, and it should be quoted as one case.

Ask how the practice handles refinements. Many aligner cases need a refinement stage after the first set, and some practices include one refinement in the fee while others charge for it. The answer changes the total by hundreds of dollars, so ask before the trays are ordered rather than after.

Where these figures come from

Related pages

• Orthodontics costs by state and province
• How to pay for braces
• How to pay for dental work
• Loan payment calculator

Frequently asked questions