If you’re researching clear aligners in the UK, the first question that comes up is almost always: how long does this actually take? The honest answer is that it depends — but not as much as the internet makes it sound. Most Smila patients finish their treatment in four to ten months, with the vast majority of cases landing right in the middle of that range.
What drives a treatment timeline
Three things move the dial more than anything else:
- How much your teeth need to move. Mild crowding or a relapse from past braces moves fast. Larger gaps, rotations, or bite corrections take more steps.
- How consistently you wear your aligners. Clear aligners only move your teeth while you’re wearing them. The recommended 20–22 hours per day isn’t a suggestion — every hour skipped adds time at the end.
- Your biology. Bone remodels at different speeds in different people. Two patients with the same starting position can finish weeks apart and that’s normal.
What a typical Smila journey looks like
A standard 6-month Smila plan tends to follow this rhythm:
- Week 1–2: 3D scan and personalised treatment plan (£200), reviewed and signed off. First aligners delivered.
- Month 1–4: Aligners swapped every 1–2 weeks. Most patients start seeing visible movement around week 6.
- Month 5–6: Refinement aligners (if needed) to perfect alignment.
- End of treatment: Final scan + custom retainers fitted.
When clear aligners are not the fastest option
If you have a significant bite issue, severe crowding, or need a tooth surgically rotated, traditional braces or a fixed appliance can sometimes be quicker. We’ll tell you that at your free consultation rather than start a treatment that wasn’t built for the case.
Want a personalised timeline?
The only way to get an accurate number is from a clinician looking at your scan. Book a free Smila consultation and we’ll tell you exactly how long your case is likely to take — before you commit to anything.
