How Long Is Invisalign?

How Long Does Invisalign Treatment Take in Edinburgh?

For most adults, Invisalign takes somewhere between 3 and 18 months. Where you fall in that range depends mainly on how much your teeth need to move, and on how consistently you wear your aligners.

As a rough guide:

• Minor cases, such as a single crooked tooth, small gaps or a little relapse after childhood braces: about 3 to 6 months.
• Moderate cases, such as noticeable crowding or spacing, or a mild bite correction: about 6 to 12 months.
• Complex cases, such as significant crowding, deep bites, crossbites or work on both arches with elastics: about 12 to 18 months, and occasionally longer.

Refinements, the short extra series of aligners that fine-tunes the result, can add a few weeks to a few months. At Comely Bank Dental they are included in your Invisalign fee, which starts from £3,000. These are typical ranges, not promises; your own estimate comes from your scan and treatment plan.

What Makes a Case Minor, Moderate or Complex?

It is less about how your teeth look and more about the type and amount of movement needed. Two people with similar-looking crowding can have quite different timelines.

Movements that tend to lengthen treatment include large rotations, especially of rounded teeth, moving a tooth up or down within the bone, and correcting how the upper and lower teeth meet. Tipping or nudging front teeth into line is usually quicker. Dr Jonathan Wardell, an Invisalign Diamond Apex Provider every year from 2022 to 2026, plans each stage of movement on the scan so the timeline reflects your teeth rather than a standard package.

Why Does Wear Time Matter More Than Anything Else?

Each aligner is designed to move your teeth a small, set amount, and it only does that while it is in your mouth. The standard is 20 to 22 hours a day, taking the aligners out only to eat, to drink anything other than plain water, and to clean your teeth.

Wear them for 16 hours instead of 22 and the teeth won't fully reach the position that aligner was made for. The next aligner then fits less well, and the gap builds up. This is the most common reason treatment overruns, and it often leads to an extra round of refinements.

A few habits help:

• Keep meals to set times rather than grazing.
• Brush or rinse and put the aligners straight back in after eating.
• Carry the case everywhere, so the aligners never end up wrapped in a napkin.
• Set a phone reminder if you tend to forget after lunch.

How Often Do You Change Aligners?

Most people move to a new set every one to two weeks. Which interval suits you depends on the movements planned and how your teeth respond. Simpler movements in a well-fitting set may suit a weekly change, while some patients are kept on a fortnightly schedule, particularly for bite correction or where the gums need a gentler pace.

The total number of aligners multiplied by the change interval gives the length of the main series. For example, 30 aligners changed every 10 days is around 10 months, before any refinements.

Please don't change faster than advised to finish sooner. If an aligner doesn't seat fully against the teeth, moving to the next one compounds the problem. If a new aligner feels loose or doesn't fit, wear the current one a few more days and let us know.

Do Attachments and IPR Change the Timeline?

Both are tools that make tooth movement more predictable, and predictable movement usually means fewer delays.

Attachments are small, tooth-coloured bumps bonded to some teeth. They give the aligner something to push against, which helps with rotations and moving teeth up or down. If one breaks off, the aligner loses grip on that tooth, so let us know rather than waiting until your next visit.

Interproximal reduction (IPR) means removing a very small amount of enamel from between certain teeth to create space. It is planned to the fraction of a millimetre, is usually painless, and can help resolve crowding without pushing teeth too far outwards. IPR is normally done at set points in the plan, so it adds no extra time when it happens on schedule.

Elastics are used in some bite corrections. They only work while worn as advised, and like the aligners themselves they are a common source of delay when forgotten.

What Are Refinements, and How Much Time Do They Add?

Teeth don't always track exactly as the computer plan predicts. Towards the end of the main series we take a new iTero scan and, if needed, order a short extra series of aligners to finish the details: a stubborn rotation, a small space or a bite that needs settling.

Refinements are common and normal, not a sign that something has gone wrong. A typical refinement adds a few weeks to a few months, and some people need more than one. Refinements are included in Invisalign treatment at Comely Bank Dental, so finishing the result properly doesn't come with an extra fee.

When you are working backwards from a date, build in time for refinements rather than planning around the end of the first series.

How Often Will You Need Appointments?

Fewer than most people expect. A typical pattern:

• Consultation with an iTero scan and simulation, which is free.
• Fitting visit to place attachments and give you your first aligners.
• Dental examinations every 6 to 10 weeks or so, to check progress, carry out any planned IPR and hand over your next sets.
• Refinement scan towards the end of the main series.
• Retainer visit to fit your Vivera retainers.

Many dental examinations are short. We're open Monday to Friday, 9am to 5.30pm, with later appointments by arrangement, which helps if you work in the New Town or the West End. Keep up your usual dental examinations and hygiene visits during treatment too; healthy gums keep teeth moving well.

What Can Slow Treatment Down?

Beyond wear time, the things we see most often are:

• Lost or broken aligners, especially on holidays. Keep your previous set as a spare and contact us if you lose one.
• Long trips without the next sets. If you are going away, tell us early so we can plan.
• Dental work mid-treatment. A new crown or a large filling can change a tooth's shape enough that the aligners no longer fit, sometimes meaning a new scan. Where possible, we deal with this before you start.
• Gum inflammation, which can slow movement and affect fit.
• Certain medicines, including some bone treatments, which can slow tooth movement. Tell us about any medication at your consultation.
• Missed dental examinations, which can mean a problem runs on for weeks unnoticed.

Devices sold to speed up aligner treatment, such as vibration gadgets, have limited evidence behind them. Consistent wear does far more.

Is Treatment Finished When the Last Aligner Comes Out?

The active phase is, but retention is just as important. Teeth tend to drift back towards where they started, especially in the first months after alignment, and they keep changing slowly throughout life.

Your Vivera retainers are included in Invisalign treatment here. Most people wear them full time at first, then move to night-time wear, which is best continued for as long as you want your teeth to stay straight. Retention doesn't add to the length of treatment, but it is a long-term commitment worth understanding before you start.

If you want whitening or composite bonding as well, these are usually done near the end of alignment or once teeth are settled, which is worth factoring into any timeline.

Questions

This guide is general information, not a diagnosis. A dentist needs to examine you to say what is right for your teeth.