At a glance: side-by-side comparison
| Braces (fixed) | Clear Aligners | |
|---|---|---|
| How they work | Fixed brackets and wire — always working | Removable trays — effective only when worn |
| Visibility | Metal: visible. Ceramic: less so. Lingual: hidden | Near-invisible when worn |
| Removable | No | Yes — but must wear 20–22 hrs/day |
| Typical UK cost | £2,000 – £6,000 (type dependent) | £1,500 – £5,500 (complexity dependent) |
| Bite correction | Strong — well suited to complex cases | Possible for many bite issues, limitations with complex movements |
| Complex rotations | Well handled | More challenging; attachments help |
| Eating restrictions | Yes — hard/sticky foods to avoid | None — remove to eat |
| Cleaning | More effort around brackets and wires | Straightforward — remove to brush |
| NHS availability | For qualifying under-18s | Rarely available on NHS |
| Treatment time | 12–30+ months depending on case | 6–24 months depending on case |
When braces are usually the better choice
Braces tend to be recommended when:
Significant bite correction is needed. Overbites, underbites, crossbites, and open bites often respond better to fixed braces, which provide continuous, precise force in all planes of movement.
Complex rotations are required. Rotating certain teeth — particularly premolars and molars — is more predictable with fixed braces than aligners, although modern aligners with attachments have improved significantly in this area.
Compliance may be a concern. Because braces are fixed, they work continuously without requiring the patient to remember to wear them. This removes the biggest variable in aligner treatment outcomes.
Cost is a primary factor. Metal braces are typically the most cost-effective option for moderate to complex cases. For the same level of movement, metal braces are often less expensive than a full aligner treatment.
The case is in a growing patient. For children and teenagers, fixed braces remain the most widely used approach as they allow the orthodontist to manage tooth eruption and bite development directly.
When clear aligners are usually the better choice
Clear aligners tend to be preferred when:
Discretion is the priority. Aligners are near-invisible when worn, which is a significant advantage for adults in professional or social environments.
The case is mild to moderate. Crowding, spacing, minor relapse after previous treatment, and straightforward bite improvements are often well-suited to aligners.
Lifestyle flexibility matters. Being able to remove aligners for eating, playing contact sports, or special occasions appeals to many adult patients. There are no food restrictions during treatment.
Oral hygiene is a concern. Brushing and flossing with braces requires extra care and technique. Aligners are simply removed, making it easier to maintain oral hygiene throughout treatment.
Compliance can be relied upon. Aligners only work when worn. Patients who are motivated and consistent with wear times (20 to 22 hours per day) achieve excellent results; those who struggle to wear them consistently may be better suited to fixed treatment.
Cost: braces vs clear aligners in the UK
Both options overlap significantly in price. The cost depends more on the complexity of your case than on which system is used.
Fixed Braces
Metal: £2,000 – £3,500
Ceramic: £2,500 – £4,500
Self-ligating: £2,500 – £4,500
Lingual: £4,000 – £6,000+
Clear Aligners
Mild: £1,500 – £2,800
Moderate: £2,800 – £4,200
Complex: £4,200 – £5,500+
What about treatment time?
Treatment time is determined primarily by the amount and complexity of tooth movement required — not by the type of appliance. Claims that one system is inherently faster than the other should be approached with caution.
For mild cases, clear aligners can complete treatment in as little as 6 to 12 months. For moderate to complex cases, both braces and aligners typically take 18 to 30 months. The key difference is that braces work consistently regardless of patient behaviour, whereas aligner outcomes depend heavily on consistent daily wear.
Do results differ between braces and aligners?
For cases that are clinically suitable for both, outcomes are comparable. Modern clear aligner systems — particularly with attachments and inter-proximal reduction — can achieve results that were previously only possible with fixed braces.
The evidence base is stronger for fixed braces in complex bite cases, and many orthodontists still prefer braces for significant overbite, underbite, or crossbite correction. For simpler alignment and spacing cases, the choice between them is largely a matter of lifestyle preference.
Both treatment types are followed by retention — retainers to hold the result in place. This phase is equally important regardless of which system was used.
Frequently asked questions
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