Short answer: Clear aligners are an orthodontic treatment method that straightens teeth step by step with custom-made, transparent, removable aligners. Each aligner moves the teeth very slightly and is usually replaced with a new one every one or two weeks. The aligners need to be worn 20–22 hours a day. They are used for crowding, gaps between teeth and some bite problems; suitability is decided by an orthodontic examination.
Clear aligners are the general name for removable orthodontic appliances made of thin, transparent plastic that fit snugly over the teeth. The simplest answer to the question what are clear aligners is this: a series of aligners, each made with very small differences from the previous one, moves the teeth step by step into the planned position as they are worn in sequence. Because no brackets or wires are used, the treatment is hardly noticeable from the outside; the aligners are taken out while eating and brushing. In this article we explain from the ground up how the method works, who it is suitable for, how the process unfolds and which factors determine the cost.
What are clear aligners?
Clear aligners are a treatment method used as an alternative to braces, consisting of transparent orthodontic appliances made specifically for the patient's mouth. The aligners are planned on a computer from a digital impression taken with an intraoral scanner, and each one is shaped to apply a controlled force to the teeth in a specific direction. At our clinic, clear aligner treatment is provided only with the Invisalign system; the aligners are produced according to the digital treatment plan approved by the orthodontist.
Although the method is often referred to as "invisible braces," technically it contains no wires. The aligners wrap around the tooth surface like a thin sleeve, so most people around you will not notice the treatment when you speak or smile. If you would like to see the basic concepts in more detail, you can also take a look at the explanations on our what are clear aligners page.
How do clear aligners move the teeth?
Clear aligners apply gentle, continuous pressure to the teeth, causing the surrounding bone to remodel, and in this way move the teeth slowly. The basic biology of orthodontics is the same as with bracket treatment: the force applied to the tooth triggers bone breakdown on one side of the periodontal ligament surrounding the root and bone formation on the other. Thanks to this balanced process, the tooth changes position.
Each aligner aims to move the teeth by only fractions of a millimeter. For this reason, the aligners are replaced with a new one at set intervals, usually every one or two weeks. Several elements support how the process works:
- Attachments: Small tooth-colored composite bumps bonded to the surface of some teeth. They help the aligner grip the tooth better and make difficult movements such as rotation, intrusion or extrusion possible.
- Interproximal reduction: When deemed necessary, space is gained by thinning a very small amount of enamel from the contact surfaces of the teeth. The procedure is done in a planned and measured way.
- Elastics: In some cases that require bite correction, small elastics may be used between the upper and lower jaws.
For the aligner to be effective, it must be worn enough during the day. The general recommendation is for the aligners to stay in the mouth 20–22 hours a day; an aligner that is out for long periods cannot apply consistent force to the teeth, and treatment may fall behind the plan.
Who is clear aligner treatment suitable for?
Clear aligners are a method that, with appropriate case selection, can be used for many orthodontic problems such as crowding, gaps between teeth and mild and moderate bite problems. Suitability depends less on age and more on the condition of the teeth and jaws and how willing the person is to wear the aligners consistently.
They are generally considered in the following situations:
- Crowding or tightness in the front teeth
- Gaps between the teeth
- Some forms of deep bite, open bite or crossbite
- Teeth shifting again in people who have had orthodontic treatment before
- Bringing the teeth into a suitable position before an implant or prosthesis
In significant skeletal jaw discrepancies and severely rotated or impacted teeth, aligners alone may not be sufficient; in some cases, planning together with additional methods or surgery is needed. Also, if there is gum disease or untreated decay, these are expected to be addressed first. Who the treatment is suitable for is decided after an orthodontic examination, X-rays and a digital scan.
How does the treatment process unfold and how long does it take?
Clear aligner treatment progresses in several stages, namely examination, digital planning, delivery of the aligners, regular checkups and retention, and its duration varies by case. While simple corrections can be completed within a few months, comprehensive cases involving bite problems can take more than a year.
- Examination and records: An examination of the mouth is done, and the necessary X-rays and photos are taken.
- Digital scan: Instead of a putty impression, a three-dimensional model of the teeth is created with an intraoral scanner.
- Planning: The orthodontist digitally plans in what order and how far the teeth will move; the patient can see the projected treatment course on screen.
- Fitting the aligners: If necessary, attachments are bonded, the first aligners are fitted and the rules for wear and cleaning are explained.
- Checkups: Progress is assessed at appointments usually held every 6–10 weeks; if necessary, refinement aligners are prepared.
- Retention: After active treatment ends, a retainer or a fixed wire is used so that the teeth maintain their new position.
The factor that affects the duration most is patient compliance. Wearing the aligners for the recommended time, sticking to the change schedule and not missing checkups help the plan progress within the projected time. You can find a detailed description of the stages on our clear aligner treatment process page.
What are the advantages and disadvantages of clear aligners?
The most notable advantages of clear aligners are their aesthetic appearance, being removable and making oral hygiene easier; the most important disadvantage is that success depends largely on the patient's consistent wear. Before deciding, you should honestly know both sides.
Advantages
- Because they are transparent, they do not draw attention in daily life.
- Because they are taken out while eating, there are fewer food restrictions than with braces.
- Teeth can be brushed and flossed easily.
- There are no emergencies such as broken brackets; irritation of the cheeks and lips is generally less.
- Thanks to digital planning, the projected course of treatment can be seen from the start.
Disadvantages
- If the aligners are not worn 20–22 hours a day, treatment slows down or deviates from the plan.
- Taking out the aligners before any food or drink other than water, then cleaning the teeth and putting them back in, takes discipline.
- There may be a feeling of pressure and temporary sensitivity in the first days of switching to a new aligner.
- A slight lisp may occur in the first days; in most people it passes quickly.
- Not every case is suitable for aligner treatment; some movements may be more predictable with fixed braces.
What factors determine the cost of clear aligners?
The cost of clear aligner treatment varies from person to person depending on the complexity of the case, the number of aligners needed, the length of treatment and additional procedures. For this reason, it is not possible to give reliable information without an examination.
The main factors that affect the cost are:
- The type and severity of the problem to be corrected (mild crowding in the front teeth only is not the same as bite correction)
- The planned number of aligners and any refinement aligners
- Supporting procedures such as attachments, interproximal reduction or elastics
- Fillings, scaling or gum treatments needed before treatment
- Retention appliances after treatment
At our clinic, fee information is provided in writing, tailored to the individual, after the examination and digital planning are complete. For a broader explanation of the factors that affect cost, you can see our clear aligner pricing page.
How is daily life affected during treatment?
For people using clear aligners, the daily routine in most cases settles easily after a short adjustment period. During morning and evening brushing, the aligners are also cleaned with a soft brush and lukewarm water; hot water is not used because it can distort the aligner's shape. It is recommended to drink only plain water while wearing the aligners, because sugary or acidic drinks can be trapped between the aligner and the teeth and increase the risk of cavities. Always storing a removed aligner in its own case prevents it from being wrapped in a napkin and lost.
When should you have an examination for clear aligners in Ankara?
If crowding, gaps or a bite problem in your teeth bothers you and you are wondering whether an option other than braces would suit you, an orthodontic examination is a good starting point. At our clinic in Park Oran Ofis in Oran, Çankaya, Funda Pekyılmaz Sarıkaya, specialist orthodontist (Uzm. Dt.), assesses the condition of your teeth and jaws and talks openly about whether clear aligners are suitable for you and which path will be more predictable.
Frequently asked questions
Do clear aligners hurt?
When switching to a new aligner, pressure and slight sensitivity may be felt in the teeth for the first day or two. This is a sign that force is being applied to the teeth, and in most people it eases quickly. If the sensitivity lasts a long time or the aligner pokes at a certain spot, the orthodontist should be informed.
How many hours a day should clear aligners be worn?
The general recommendation is for the aligners to stay in the mouth 20–22 hours a day. The aligners are taken out only while eating, drinking anything other than water and cleaning the teeth. Shorter wear can cause treatment to deviate from the plan.
Can clear aligners be used at any age?
Suitability depends more on the health of the teeth and gums than on age. There are different aligner options for children, teens and adults. If the gums and supporting tissues are healthy, treatment can also be planned at an older age; the decision is made by an examination.
Will my teeth shift back after treatment?
Teeth can tend to return to their old positions after treatment. For this reason, a retainer or a fixed retention wire is used after active treatment. Following the wear time recommended by the orthodontist helps maintain the result.
