Invisalign or Home Kits?

What's the Difference?

Both use clear plastic aligners, and both rely on the same biology: gentle pressure that lets bone remodel around the roots. The difference is everything around the aligners. With Invisalign at a practice, a dentist examines you, takes X-rays and a scan, plans the movement, bonds attachments where they're needed, checks you every 6 to 8 weeks and adjusts the plan if your teeth don't follow it. With at-home aligners, most of that happens remotely, or not at all.

Why Does an Examination Matter?

Straightening teeth is dental treatment, not a product. Moving teeth with untreated gum disease or decay can make both worse: inflamed gums lose bone faster when teeth are pushed through them, and a cavity ignored for a year of treatment becomes a bigger problem. An examination and X-rays also check the roots, the bone around them, existing crowns and fillings, and your bite, all of which affect how teeth can safely be moved.

At St Vincent Smile, Dr Davinder Kalsi examines your teeth and gums at your free consultation before anything is planned. If something needs treating first, you'll know at that visit. A photograph and a home impression kit can't tell anyone what's happening under the gum.

How the Scan and the Plan Differ

In practice, your teeth are scanned on an iTero Lumina, a digital scanner that builds a precise 3D model in a few minutes, with no putty. The simulation and the stage-by-stage plan are built on that scan, and the fit of every aligner depends on its accuracy. Home impression kits rely on you taking a good putty impression of your own teeth at the kitchen table, and a poor impression means poorly fitting aligners.

Some tooth movements also need a dentist in the chair. Attachments, the small tooth-coloured bumps that give aligners grip, are bonded to the teeth, and occasionally a fraction of a millimetre is polished from between teeth to create space. Remote-only treatment usually can't include either, which limits it to simpler movements, and it's one reason some at-home cases don't finish where the plan said they would.

Examinations and Refinements

You'll see us every 6 to 8 weeks. We check that your teeth are tracking with the plan, look at the attachments and your gums, and hand over your next aligners. If a tooth lags behind, we can catch it early rather than at the end. And if your teeth need fine-tuning once the main set is finished, refinements, the extra aligners that do that, are included in your package.

Remote monitoring by photograph can spot some problems, but it can't feel whether an aligner is seating fully, test how your teeth meet, or notice early gum changes. Those are the things that decide whether treatment ends well.

What If Something Goes Wrong?

With in-practice treatment, your dentist can adjust the plan, add refinements or deal with problems face to face, and is responsible for your care from start to finish. If an aligner cracks, a tooth stops moving, or your bite feels wrong, you have someone to see.

With at-home aligners, support depends on the company. One of the largest at-home aligner companies closed in 2023, leaving many patients without support part-way through treatment, some of them with aligners that no longer fitted and no retainers to come. A practice can't simply pick up another company's plan, so those people needed a new assessment and, usually, a new course of treatment.

What Does Invisalign Cost?

From £3,750 for Lite to £5,250 for Comprehensive Plus, depending on how far your teeth need to move. Every package includes refinements, Vivera retainers, whitening, scans and X-rays, and a hygiene visit.² The consultation is free, with a £40 deposit refunded within 7 days of attending, and the fee is fixed in writing before you start. Our Invisalign cost guide explains the four packages.

At-home aligners are often cheaper up front. Before you compare, add up what isn't in the headline price: an examination and X-rays, retainers at the end, refinements if the first set doesn't finish the job, and dental examinations. Treatment of £1,500 or more here can be spread through Chrysalis Finance, interest free over 6 or 12 months, subject to status. See finance for the terms.

Started with a Home Kit?

If you've started remote aligners and you're worried, in pain, or your teeth aren't moving, book a free consultation. Bring whatever records you have. We'll examine your teeth and gums, take an iTero Lumina scan to see where things stand, and explain the options honestly. Because aligners are made to one specific plan, we can't continue another company's aligners, so the options usually mean a new plan, which may be shorter than you expect if a lot of the movement is already done. Whatever you decide, you'll leave knowing what state your teeth are in, which is the thing remote treatment can't give you. Our guide to Invisalign for adults explains what treatment here involves.

Questions

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