Clear Aligners vs Fixed Braces for Adults: Which Should You Choose?

Clinically reviewed by Dr Shaheen Alghofari, GDC-registered dentist (GDC no. 318372) at Twilight Dental, Leeds. Considering straighter teeth? See clear aligners and Invisalign in Leeds.

How do clear aligners work?

Clear aligners are a series of thin, custom-made plastic trays. Each set moves your teeth a fraction of a millimetre, and you move on to the next set every one to two weeks. Your treatment is planned digitally from a scan, so you can usually see a simulation of the expected result before you commit. Invisalign is the best-known brand, but several systems work in a similar way.

How do fixed braces work?

Fixed braces use small brackets bonded to the teeth, joined by a wire that is adjusted over time. Modern options include tooth-coloured ceramic brackets and lingual braces fitted behind the teeth. Because they stay on all the time, they work continuously and give the clinician fine control over each tooth.

Side-by-side comparison

• Appearance: aligners are close to invisible; ceramic braces are discreet; metal braces are the most visible.
• Wear time: aligners only work while they are in — 20 to 22 hours a day. Braces work 24/7 with no willpower required.
• Eating: aligners come out to eat, so there are no food restrictions, but you must brush before putting them back. With braces you avoid hard and sticky foods.
• Cleaning: aligners are easier, as you brush and floss normally. Braces need extra care around brackets.
• Comfort: both cause some pressure when a new stage starts. Aligners avoid the rubbing of brackets on cheeks.
• Complexity: aligners now handle a wide range of cases, but severe rotations, large bite corrections and some tooth movements are still better suited to fixed braces.
• Time: mild aligner cases can take a few months; more involved cases with either system often take a year or more.

Who are clear aligners best for?

Aligners suit adults with mild to moderate crowding, spacing, relapse after braces as a teenager, and many bite problems — provided they will wear the trays consistently. They are popular with professionals and students who want treatment to be discreet. They are not a good choice if you know you will leave them out.

Who are fixed braces best for?

Fixed braces are often the better choice for complex cases, significant bite problems, or anyone who would rather not be responsible for wearing a removable appliance. Some complex cases are best referred to a specialist orthodontist, and we will tell you honestly if that applies to you.

Do I need retainers afterwards?

Yes, whichever you choose. Teeth naturally try to drift back after they have been moved. Most people are given a thin wire bonded behind the front teeth, a removable clear retainer to wear at night, or both. Retainers are a long-term commitment and are the single biggest factor in keeping your result.

Before you straighten: check-up first

Teeth and gums need to be healthy before any orthodontic treatment. Decay or gum disease should be treated first. Some people also combine straightening with whitening or composite bonding afterwards to finish the smile. A new patient consultation at Twilight Dental in Woodhouse, LS6 is £24 until 10pm and includes an examination, any X-rays needed and an honest view on whether aligners will work for you.