What Are Clear Aligners and How Do They Work? A Complete Guide to Invisible Braces

Discover everything you need to know about clear aligners and invisible braces. Learn how they work, their benefits, costs, and why they're the most popular orthodontic treatment in the UK.
Clear aligners have revolutionised orthodontics, offering a discreet and comfortable alternative to traditional metal braces. If you've been wondering what clear aligners are and how invisible braces work, this comprehensive guide will answer all your questions about this transformative teeth straightening treatment.
What Are Clear Aligners?
Clear aligners, also known as invisible braces or transparent braces, are custom-made orthodontic devices designed to straighten your teeth without the need for metal brackets and wires. Made from medical-grade, BPA-free plastic, these dental aligners fit snugly over your teeth and gradually shift them into the desired position.
Unlike traditional braces, clear aligners are virtually invisible, making them an ideal choice for adults and teenagers who want to improve their smile discreetly. The technology behind teeth aligners has advanced significantly in recent years, making treatment more accessible, comfortable, and affordable than ever before.
Clear aligners are suitable for correcting a range of orthodontic issues, including crowded teeth, gaps between teeth, overbites, underbites, and mild to moderate misalignment. They work best for patients who are committed to wearing their aligners for 20-22 hours per day and following their treatment plan precisely.
How Clear Aligners Differ from Metal Braces
The key differences between invisible braces and traditional metal braces include:
- Appearance: Clear aligners are nearly invisible, whilst metal braces are highly noticeable
- Removability: Aligners for teeth can be removed for eating and cleaning, unlike fixed braces
- Comfort: Smooth plastic aligners cause less irritation than metal brackets
- Maintenance: Clear teeth braces are easier to clean and maintain
- Food restrictions: No dietary limitations with removable aligners
How Do Clear Aligners Work?
Understanding how invisible braces work can help you appreciate the precision and technology involved in modern orthodontic treatment. The process combines advanced digital technology with carefully planned tooth movements.
1. Digital 3D Scanning and Treatment Planning
Your clear aligner journey begins with a comprehensive digital 3D scan of your teeth at a clinic like Pro Aligners in London. This advanced scanning technology creates a precise 3D model of your teeth, eliminating the need for messy traditional impressions.
Our experienced orthodontic team uses this scan to create a customised treatment plan that maps out exactly how your teeth will move from their current position to your desired smile. You'll be able to see a virtual preview of your final results before you even begin treatment.
2. Custom-Made Aligner Trays
Based on your 3D scan and treatment plan, a series of custom-made clear aligner trays are manufactured specifically for you. Each set of invisible dental braces is designed to make precise, controlled movements of your teeth.
The number of aligner trays you'll need depends on the complexity of your case, but most patients receive between 10 and 40 sets of aligners throughout their treatment journey.
3. Gradual Teeth Movement
Each aligner tray applies gentle, controlled force to specific teeth, gradually moving them into the correct position. The technology behind clear aligners UK treatments uses biomechanics to ensure safe, predictable tooth movement.
You'll wear each set of aligners for approximately 1-2 weeks before progressing to the next set in the series. As you change to each new aligner, your teeth continue their journey towards perfect alignment.
4. Regular Progress Monitoring
Throughout your treatment, you'll have regular check-ups with your orthodontist to monitor progress and ensure your teeth are moving as planned. At Pro Aligners, we use advanced tracking technology to keep your treatment on schedule and deliver optimal results.
🦷 The Clear Aligner Treatment Process
Benefits of Clear Aligners
The popularity of invisible teeth braces has surged in recent years, and for good reason. Clear aligners offer numerous advantages over traditional orthodontic treatments.
Nearly Invisible Appearance
The most obvious benefit of clear aligners is their discreet appearance. Made from transparent plastic, they're virtually undetectable when worn, allowing you to straighten your teeth without anyone noticing. This makes them perfect for professionals, adults in social settings, and teenagers who may feel self-conscious about wearing braces.
Removable for Convenience
Unlike fixed metal braces, teeth aligners UK treatments use removable trays that you can take out for eating, drinking, brushing, and special occasions. This flexibility means you can enjoy all your favourite foods without restrictions and maintain excellent oral hygiene throughout treatment.
Comfortable and Non-Irritating
Clear braces are made from smooth plastic with no sharp edges, metal brackets, or protruding wires to irritate your cheeks, lips, or gums. Most patients find aligners significantly more comfortable than traditional braces, with minimal adjustment period.
Easy to Clean
Maintaining good oral hygiene is simple with removable invisible aligners. You can brush and floss your teeth normally, and clean your aligner trays with lukewarm water and a soft toothbrush. There are no brackets or wires to navigate around when cleaning.
No Food Restrictions
Because you remove your aligners to eat, there are no dietary restrictions during treatment. Enjoy sticky, crunchy, or hard foods without worry—something that's not possible with traditional braces.
Fewer Dental Appointments
Clear aligner treatment typically requires fewer in-person appointments than traditional braces. Since there are no wires to tighten or brackets to adjust, you'll spend less time in the dentist's chair.
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Book Free ConsultationClear Aligners vs Traditional Braces: A Detailed Comparison
When deciding between clear aligners and traditional braces, it's important to understand the key differences. Here's a comprehensive comparison to help you make an informed decision.
Which Is Right for You?
Clear aligners are ideal for mild to moderate orthodontic issues and patients who value discretion and convenience. Traditional braces may be better suited for complex cases requiring significant tooth movement or rotation.
During your free consultation at Pro Aligners, our experienced team will assess your specific needs and recommend the most effective treatment option for achieving your perfect smile.
Who Is Suitable for Clear Aligner Treatment?
Clear aligners can effectively treat a wide range of orthodontic issues, making them suitable for many adults and teenagers. Here are the conditions that respond well to invisible braces treatment:
Mild to Moderate Misalignment
If your teeth are slightly crooked or rotated, clear aligners can gradually shift them into proper alignment. The custom-designed trays apply targeted pressure to move each tooth precisely where it needs to be.
Gaps Between Teeth
Spaces or gaps between teeth, also known as diastemas, can be closed effectively using teeth aligners. The treatment gradually brings your teeth closer together for a more uniform smile.
Crowded Teeth
When there isn't enough space in your jaw for all your teeth to fit normally, they can overlap or twist. Clear aligners can create space and align crowded teeth into their proper positions.
Overbite
An overbite occurs when your upper front teeth overlap significantly with your lower teeth. Mild to moderate overbites can be corrected with clear aligner treatment.
Underbite
When lower teeth protrude past the upper front teeth, it's called an underbite. Clear aligners can help correct mild underbites by repositioning the teeth.
Crossbite
A crossbite happens when some upper teeth sit inside the lower teeth rather than outside. This condition can often be treated successfully with invisible braces, particularly mild to moderate cases.
Open Bite
An open bite is when the upper and lower teeth don't touch when the mouth is closed. Depending on severity, open bites may be treatable with clear aligners.
Age Considerations
Clear aligners are suitable for teenagers (typically 14+) and adults of all ages. The key requirements are:
- Fully developed permanent teeth
- Good oral health
- Commitment to wearing aligners 20-22 hours daily
- Responsible enough to care for and not lose the aligners
How Long Does Clear Aligner Treatment Take?
One of the most common questions about invisible braces is: "How long will I need to wear them?" The answer varies depending on several factors.
Average Treatment Timeline
Most patients complete their clear aligner treatment in 3 to 12 months, though some cases may take up to 18 months. This is significantly faster than traditional braces, which typically require 18 to 36 months.
Factors That Affect Treatment Duration
- Severity of misalignment: Minor adjustments take less time than complex cases
- Compliance: Wearing aligners 20-22 hours daily ensures optimal results
- Age: Younger patients' teeth may move slightly faster
- Bone density: Individual biology affects tooth movement speed
- Treatment plan: The number of aligner trays in your series
What to Expect During Treatment
You'll change to a new set of aligners every 1-2 weeks, with each tray bringing you closer to your final result. Most patients notice visible improvements within the first few months of treatment.
Regular check-ins with your Pro Aligners team ensure your treatment stays on track. If adjustments are needed, we can modify your treatment plan to ensure you achieve the best possible outcome.
Dr Yasha Shirazi's Advice:
"Consistency is key with clear aligner treatment. Patients who wear their aligners for the recommended 20-22 hours daily see results much faster than those who don't. Think of it like going to the gym—regular, consistent effort yields the best results. At Pro Aligners, we support our patients every step of the way to ensure treatment success."
See How Long Your Treatment Will Take
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Book Your Free AssessmentCost of Clear Aligners in the UK
Understanding the cost of clear aligners is an important part of your treatment decision. Prices vary based on several factors, but clear aligners have become increasingly affordable in recent years.
Average Clear Aligners Cost UK
In the UK, clear aligner treatment typically costs between £1,000 and £6,000. However, at Pro Aligners in London, we offer high-quality treatment starting from just £1,000 to £2,990, making professional teeth straightening accessible to more people.
Factors Affecting Clear Aligners Cost
- Complexity of your case: Simple corrections cost less than complex realignments
- Number of aligners needed: More aligner trays increase overall cost
- Treatment duration: Longer treatments may require more materials and appointments
- Location: London prices can vary, but Pro Aligners offers competitive rates
- Clinic expertise: Experienced orthodontists may charge different rates
- Included services: Retainers, refinements, and follow-up care
Clear Aligners vs Braces Cost Comparison
When comparing aligners vs braces in terms of cost, clear aligners are often comparable or slightly more expensive than traditional metal braces. However, the benefits of invisible treatment, comfort, and convenience make clear aligners worth the investment for most patients.
At Pro Aligners, we believe everyone deserves a confident smile, which is why we offer:
- Competitive pricing starting at £1,000
- Flexible payment plans to spread the cost
- Transparent pricing with no hidden fees
- Free initial consultations and 3D scans
- Unlimited refinements included in your treatment
How Much Are Clear Aligners Worth?
Beyond the monetary cost, consider the value of improved confidence, better oral health, and a smile you're proud to show. Many patients find that the investment in clear aligners pays dividends in their personal and professional lives.
Additionally, clearer aligners often result in fewer dental appointments, less time off work, and no dietary restrictions—all factors that add value to your treatment experience.
Why Choose Pro Aligners in London?
At Pro Aligners, we're committed to providing exceptional clear aligner treatment that combines advanced technology, expert care, and affordable pricing. Here's what sets us apart as a leading London clear aligner clinic.
Expert Orthodontic Care
Our team of GDC-registered dentists and orthodontic specialists has extensive experience in teeth straightening treatments. We've helped thousands of patients achieve their dream smiles using the latest clear aligner technology.
Advanced 3D Scanning Technology
We use state-of-the-art digital 3D scanning equipment to create precise impressions of your teeth. This eliminates the discomfort of traditional moulds and ensures your aligners fit perfectly for optimal results.
Affordable, Transparent Pricing
We believe professional orthodontic care should be accessible to everyone. That's why we offer clear aligner treatment from just £1,000, with flexible payment plans available. No hidden fees, no surprises—just honest, transparent pricing.
Personalised Treatment Plans
Every smile is unique, and so is every treatment plan at Pro Aligners. We take the time to understand your goals, assess your dental health, and create a customised treatment plan designed specifically for you.
Convenient London Location
Our modern clinic in London is easily accessible, with flexible appointment times to fit your schedule. We make it easy to receive world-class orthodontic care without disrupting your busy life.
Comprehensive Aftercare
Your treatment doesn't end when you finish your last aligner. We provide retainers and ongoing support to ensure your results last a lifetime. Unlimited refinements are included in your treatment package, giving you peace of mind.
Patient-Centred Approach
At Pro Aligners, you're not just a patient number—you're part of our family. We pride ourselves on providing compassionate, personalised care throughout your entire teeth straightening journey.
Why Patients Choose Pro Aligners
Frequently Asked Questions About Clear Aligners
Are clear aligners painful?
Clear aligners are generally not painful, though you may experience mild discomfort or pressure when you switch to a new set of trays. This sensation is completely normal and indicates that your teeth are moving. Any discomfort typically subsides within a day or two as your mouth adjusts. Unlike traditional braces, there are no sharp wires or brackets to cause cuts or sores in your mouth.
How long do I wear aligners each day?
For optimal results, you should wear your clear aligners for 20-22 hours per day, only removing them to eat, drink (anything other than water), brush, and floss. Consistency is crucial—the more you wear your aligners, the faster and more predictable your results will be. Most patients find it easy to incorporate aligners into their daily routine after the first few days.
Can I eat with aligners on?
No, you should always remove your aligners before eating or drinking anything other than water. Food particles can get trapped under the aligners, leading to tooth decay and staining. Hot beverages can also warp the plastic. Simply remove your aligners, enjoy your meal, brush your teeth, and put the aligners back in. This actually helps many patients make healthier eating choices and reduce snacking.
Are clear aligners better than braces?
Whether clear aligners or braces are "better" depends on your specific needs and preferences. Clear aligners offer advantages in terms of appearance, comfort, convenience, and oral hygiene. They're ideal for mild to moderate cases and people who value discretion. Traditional braces may be more effective for complex orthodontic issues requiring significant tooth movement. During your consultation at Pro Aligners, we'll help you determine which option is best for your situation.
How much do clear aligners cost in London?
At Pro Aligners London, clear aligner treatment starts from £1,000 to £2,990, depending on the complexity of your case. This is significantly more affordable than many other London clinics, which can charge £3,500 to £6,000 or more. We offer flexible payment plans to make treatment accessible, and your package includes unlimited refinements, retainers, and comprehensive aftercare. The exact cost of your treatment will be determined during your free consultation based on your specific orthodontic needs.
Will clear aligners affect my speech?
Most patients experience a slight lisp for the first few days of wearing clear aligners as their tongue adjusts to the presence of the trays. This typically resolves within a week as you become accustomed to speaking with aligners. Practising reading aloud can help speed up the adjustment process.
Can I smoke or vape with clear aligners?
It's strongly recommended that you remove your aligners before smoking or vaping. Tobacco and vaping liquids can stain your aligners yellow or brown, making them highly visible. Additionally, smoking with aligners in place can trap harmful chemicals against your teeth and gums, increasing health risks. Many patients find that wearing aligners helps them reduce or quit smoking due to the inconvenience of removing aligners multiple times daily.
What happens if I lose an aligner?
If you lose an aligner, contact your Pro Aligners team immediately. Depending on where you are in your treatment cycle, we may advise you to move to your next set of aligners or revert to the previous set whilst we arrange a replacement. It's helpful to keep your previous aligner sets for situations like this.
Do I need to wear a retainer after clear aligner treatment?
Yes, wearing a retainer after completing your clear aligner treatment is essential to maintain your results. Teeth have a natural tendency to shift back to their original positions, so retainers hold them in place whilst the surrounding bone and tissue stabilise. At Pro Aligners, we provide retainers as part of your treatment package and will advise you on how often to wear them.
Start Your Clear Aligner Journey Today
Now that you understand what clear aligners are and how invisible braces work, you're ready to take the first step towards your dream smile. Clear aligners offer a discreet, comfortable, and effective way to straighten your teeth without the drawbacks of traditional braces.
At Pro Aligners London, we're committed to making professional orthodontic care accessible and affordable. Our expert team uses the latest technology to create personalised treatment plans that deliver exceptional results. Whether you have crowded teeth, gaps, an overbite, or other alignment issues, we can help you achieve the confident smile you deserve.
Don't wait to transform your smile. Book a free aligner consultation with Pro Aligners today and discover how clear aligners can work for you. During your consultation, we'll:
- Perform a comprehensive oral examination
- Create a digital 3D scan of your teeth
- Discuss your smile goals and concerns
- Show you a preview of your potential results
- Provide a personalised treatment plan and transparent pricing
- Answer all your questions about the treatment process
Join thousands of satisfied patients who have transformed their smiles with clear aligners. Your journey to a straighter, more confident smile starts here.
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Book Free Consultation Contact UsWritten by Pro Aligners Team
Medically reviewed by Pro Aligners Team • GDC: 195843