If you have been referred for orthodontic treatment, you may have two options on the table: NHS braces or private treatment such as Invisalign. They are very different paths with very different costs. Here is an honest comparison to help you decide which is right for you.

The NHS funds orthodontic treatment for children and young people who meet certain clinical criteria. The Index of Orthodontic Treatment Need (IOTN) is used to assess whether your case is severe enough to qualify. If you do not meet the threshold, NHS treatment is not available to you.

For adults, NHS orthodontic treatment is very limited. It is generally only available where there is a documented clinical need, such as a severe bite problem affecting function or causing dental health problems. Cosmetic concerns alone do not qualify.

NHS orthodontic waiting lists have grown significantly. Data from 2025 shows many patients waiting 18 months or more for an initial assessment, and additional time before treatment actually begins. If your primary concern is speed, this is worth knowing.

Private treatment, including Invisalign, typically has no waiting list. Once you and your dentist agree on a treatment plan, you can begin within weeks.

Book today — Book Free Smile Assessment

NHS fixed braces are highly effective for complex orthodontic problems. They can move teeth in all directions, correct significant bite issues, and manage cases involving severe crowding or jaw discrepancies. They are a proven, robust solution for serious problems.

Invisalign uses clear removable aligners. It works exceptionally well for mild to moderate crowding, gaps, and certain bite issues. However, it has limitations with very complex cases that involve significant tooth movement or jaw realignment.

If your case is complex, your orthodontist may actually recommend fixed braces — whether NHS or private — because they offer a level of control that aligners cannot always match.

Fixed braces are visible when you smile. Some people do not mind this, particularly children and teenagers who see it as a normal part of growing up. Adults often prefer the more discreet appearance of clear aligners.

Invisalign aligners are removable. You take them out to eat, drink, and brush your teeth. This means there are no food restrictions and cleaning your teeth is straightforward. Fixed braces require more care and mean avoiding certain foods that could damage the brackets or wires.

NHS treatment is free at the point of use for those who qualify. For a child or young person with a genuine clinical need, it is an excellent option that covers the full cost of treatment.

It is also the better option when the clinical case is complex. If your orthodontist recommends fixed braces because aligners are not suitable for your specific problem, that is not a reason to push for Invisalign. The clinical outcome matters more than the appearance of the appliance.

The right choice depends on your clinical needs, your eligibility, and your personal priorities. Your dentist or orthodontist can help you understand which option is clinically appropriate for your individual situation.