Clear Aligners vs Fixed BracesWhich Is Right for You?
Choosing between clear aligners and fixed braces is one of the most common questions patients have when considering teeth straightening. Both are effective orthodontic treatments, but they work in very different ways and suit different needs.
The right option for you depends on the complexity of your case, your lifestyle, and your personal preferences. This guide compares both treatments to help you prepare for a conversation with your dentist. A clinical assessment is always required before orthodontic treatment can be recommended.
Quick Comparison: Clear Aligners vs Fixed Braces
| Feature | Clear Aligners | Fixed Braces |
|---|---|---|
| Visibility | Virtually invisible — clear, transparent trays | Visible — metal brackets and wires fixed to the front of the teeth |
| Removability | Fully removable — taken out for eating, drinking and brushing | Fixed to the teeth for the full treatment duration — not removable by the patient |
| Comfort | Smooth plastic trays — no brackets or wires to irritate soft tissue | Brackets and wires may cause irritation to cheeks and lips, particularly initially |
| Treatment time | Typically 3–20 months depending on complexity | Typically 12–24 months depending on complexity |
| Effectiveness for complex cases | Effective for mild to moderate alignment issues — some complex cases may require fixed braces | Suitable for all levels of orthodontic complexity, including severe crowding, rotations and bite correction |
| Maintenance | Trays cleaned separately — normal brushing and flossing routine maintained easily | Brackets require careful cleaning around wires — interdental brushes often needed |
| Cost (at Our Practice) | From £1,000 (member) / £2,000 — see our clear aligner pricing | Not offered at our practice — contact an orthodontist for pricing |
| Suitability | Adults and older teenagers seeking a discreet, removable option | Patients with moderate to complex orthodontic needs who require continuous fixed correction |
Visibility
Removability
Comfort
Treatment time
Effectiveness for complex cases
Maintenance
Cost (at Our Practice)
Suitability
What Are Clear Aligners?
Clear aligners are removable, transparent plastic trays that are custom-made to fit over your teeth. Each set of trays applies gentle, controlled pressure to gradually move your teeth into their desired position. You wear each set for approximately two weeks before switching to the next in the series.
Because the trays are made from clear, smooth plastic, they are virtually invisible when worn. They are removed for eating, drinking and brushing, meaning there are no dietary restrictions and your normal oral hygiene routine can continue uninterrupted. At our clinic, we offer clear aligners with treatment plans starting from 3–4 months for mild cases.
Benefits
- Virtually invisible — most people will not notice you are undergoing treatment
- Fully removable for eating, drinking and oral hygiene
- Smooth plastic trays — no brackets or wires to irritate the mouth
- Custom-made for a precise, comfortable fit
- Fewer dental visits typically required during treatment
Suitable Candidates
Clear aligners are suitable for adults and older teenagers with mild to moderate alignment issues, including crowding, spacing, overbite, underbite, crossbite, and rotated teeth. They are particularly popular with patients who want a discreet treatment option that does not interfere with their daily routine. Suitability is confirmed through a clinical assessment.
What Are Fixed Braces?
Fixed braces consist of small metal brackets that are bonded to the front of each tooth and connected by a wire. The wire is periodically tightened by your orthodontist, applying continuous controlled force to gradually move the teeth into their correct position over time.
Because they are permanently attached for the duration of treatment, fixed braces work around the clock without relying on patient compliance. This makes them particularly effective for complex orthodontic cases, including severe crowding, significant rotations, and bite corrections that may be beyond the scope of removable options.
Benefits
- Effective for all levels of orthodontic complexity, including severe cases
- Fixed appliance — works continuously without relying on patient compliance
- Precise control over individual tooth movements and rotations
- Well-established treatment with decades of clinical evidence
- Suitable for patients of all ages, including adolescents and adults
Suitable Candidates
Fixed braces are suitable for patients with moderate to complex orthodontic issues, including severe crowding, spacing, significant tooth rotations, overbite, underbite, crossbite, and open bite. They may be recommended for cases that require precise, controlled tooth movement beyond what removable aligners can achieve. Suitability is determined through a clinical assessment.
Key Differences Between Clear Aligners and Fixed Braces
Removable vs Fixed
Clear aligners are fully removable — you take them out to eat, drink and brush your teeth. Fixed braces are bonded to the teeth for the entire treatment duration and can only be removed by your dentist or orthodontist at the end of treatment.
Aesthetics
Clear aligners are virtually invisible when worn, making them the most discreet orthodontic option. Fixed braces have visible metal brackets and wires on the front of the teeth, which are noticeable when you smile or speak.
Comfort
Most patients find clear aligners more comfortable because the smooth plastic trays do not have brackets or wires that can irritate the cheeks, lips, or gums. Fixed braces may cause some discomfort and soft tissue irritation, particularly after adjustments, though this typically improves as the mouth adjusts.
Effectiveness for Complex Cases
Fixed braces can treat the full range of orthodontic issues, including severe crowding, significant rotations, and complex bite corrections. Clear aligners are highly effective for mild to moderate cases but may have limitations with certain complex movements.
Treatment Time
Clear aligner treatment can range from 3–4 months for mild cases to 20+ months for more complex cases. Fixed braces typically take 12–24 months. The actual duration depends on the severity of the alignment issue and individual treatment response.
Cost
At our practice, clear aligner treatment starts from £1,000 for members (£2,000 standard). Fixed braces are not offered at our practice — if you are considering fixed braces, your orthodontist will advise on pricing. Both represent a significant investment in your smile and oral health.
Pros and Cons
Clear Aligners
Pros
- Virtually invisible — most people will not notice you are wearing them
- Fully removable for eating, drinking and oral hygiene
- Smooth plastic trays with no brackets or wires — generally more comfortable
- No dietary restrictions during treatment
- Fewer dental visits typically required compared to fixed braces
- Treatment from £2,000 (from £1,000 for members at our clinic)
Cons
- Requires discipline — must be worn 20–22 hours per day for effective results
- May not be suitable for all complex orthodontic cases
- Trays must be removed before eating or drinking anything other than water
- Lost or damaged trays may need replacement, potentially adding to cost
Fixed Braces
Pros
- Effective for all levels of orthodontic complexity, including severe cases
- Fixed to the teeth — no risk of forgetting to wear them
- Continuous, controlled force applied throughout treatment for predictable movement
- Suitable for patients who may not be disciplined with removable aligners
- Well-established treatment with decades of clinical evidence
Cons
- Visible metal brackets and wires on the front of the teeth
- Fixed to the teeth for the full duration — cannot be removed by the patient
- Brackets and wires may cause irritation to cheeks and lips
- Dietary restrictions — hard, sticky and chewy foods should be avoided
- Oral hygiene requires more effort — cleaning around brackets and wires is essential
- Regular adjustment appointments are required throughout treatment
Cost Comparison
Members save 50% on all dental treatments with our membership plan from £20/month. 0% interest finance is available for up to 12 months. Fixed braces are not offered at our practice — this comparison is provided for educational purposes only.
Which Option Is Best for You?
Best for Discreet Treatment
Clear Aligners
If discretion is your priority, clear aligners are virtually invisible. Most people will not notice you are wearing them.
Best for Complex Cases
Fixed Braces
If you have severe crowding, significant rotations, or complex bite issues, fixed braces can address the full range of orthodontic cases.
Best for Comfort & Flexibility
Clear Aligners
If you want to remove your appliance for eating and brushing, and prefer smooth trays over brackets and wires.
Best for Predictable Results
Fixed Braces
If you want a fixed appliance that works continuously without relying on patient compliance for wear time.
Please note: At South Kensington Medical & Dental, we currently offer clear aligner treatment. We do not provide fixed braces at this time. If you are considering teeth straightening, we recommend booking a complimentary consultation so we can assess your suitability for clear aligners.
Frequently Asked Questions
Considering Teeth Straightening?
The best way to find out which option suits your needs is through a personalised consultation. Our dental team can assess your teeth, discuss your goals, and recommend the most appropriate treatment — with no obligation.
At our clinic, we offer clear aligner treatment with a complimentary initial consultation. You can book a consultation with a dentist in London at our South Kensington clinic to discuss your options. After orthodontic treatment, we also offer fixed retainers to help maintain your results long-term.
This article is intended for general educational purposes only and does not constitute personalised dental advice. Individual diagnosis and treatment recommendations require a clinical examination by a qualified dental professional. All treatment outcomes depend on individual clinical factors and cannot be guaranteed. The suitability of clear aligners or fixed braces is determined during a clinical assessment. Fixed braces are not offered at our practice — this comparison is provided for educational purposes only. South Kensington Medical & Dental is registered with the Care Quality Commission (CQC) and all practitioners are registered with the General Dental Council (GDC).
Meet Our Dental Team
Our experienced dental team is fully qualified and registered with the GDC, delivering safe, high-quality care in line with the highest professional standards.
Because our patients deserve nothing less.
Registered. Regulated. Trusted.
At South Kensington Medical & Dental, we are fully registered with the Care Quality Commission (CQC) and our clinicians are registered with the relevant UK regulatory bodies, including the GDC and GMC. Our dentists, dental nurses and medical professionals deliver care that meets the highest clinical, safety and ethical standards, because our patients deserve nothing less.
