Short answer: Clear aligners can be used for mild and moderate crowding, gaps between teeth, many types of deep bite and open bite and some crossbite cases. They may fall short in severe skeletal jaw problems, untreated gum disease or for people who cannot wear the aligners 20-22 hours a day. Suitability is determined by the orthodontist after an orthodontic examination, X-rays and a digital scan.
People researching clear aligner treatment usually have the same first question: Will this method work for my teeth? The question of who clear aligners are suitable for cannot be answered in a single sentence, because suitability depends not only on the alignment of the teeth but also on jaw structure, gum health and the person's habit of wearing the aligners consistently. In this article we explain in plain language which problems can in most cases be successfully corrected with clear aligners, in which situations other methods may be needed and how suitability is assessed at our clinic. At our clinic, clear aligner treatment is provided only with the Invisalign system.
Which problems can be corrected with clear aligners?
Clear aligners are an effective option for most common tooth alignment problems. Through small, digitally planned steps, the aligners apply controlled force to the teeth, and each set moves the teeth a little closer to the target position. Successful results can usually be achieved in the following situations:
- Crowding: Mild and moderate overlapping of the teeth is the area where clear aligner treatment is most often used. For details, see our article on treating crowding with clear aligners.
- Gaps between teeth (diastema): Closing the spaces between the front teeth can be planned in most cases.
- Deep bite: Cases where the upper front teeth overlap the lower teeth too much can be treated with suitable add-ons (attachments).
- Open bite: In some cases where the front teeth do not touch, improvement can be achieved through vertical movement of the teeth.
- Crossbite and mild Class II-III relationships: In those of dental origin, aligners can be used, together with elastics if necessary.
- Relapse: Clear aligners are often preferred for people who have had braces before and whose teeth have shifted again.
Having a problem on this list does not automatically mean you are suitable for clear aligners. The severity of each case and any accompanying factors are assessed separately.
In which situations do clear aligners fall short?
Clear aligners alone may not be sufficient for severe skeletal problems caused by the size or position of the jawbones. For example, in adult cases where the lower jaw is noticeably forward or back, orthodontic treatment may need to be planned together with orthognathic surgery for a lasting correction. In this case, clear aligners can still play a role in aligning the teeth before and after surgery, but they do not resolve the jaw discrepancy on their own.
In addition, treatment becomes more complex, or other methods may come to the fore, in the following situations:
- Severely rotated teeth with a round cross-section, especially some premolars and canines
- Cases where impacted teeth need to be brought into the mouth
- Teeth with very short crowns; when there is less surface for the aligner to grip, controlling the movements can become difficult
- Teeth with very short roots or significantly reduced bone support
With advances in technology, the scope of clear aligners has expanded; so rather than thinking "my case is severe, it won't work," a better starting point is to be examined by an orthodontist.
Why do age, gum health and compliance matter?
There is no strict upper age limit for clear aligners; what really determines suitability is the health of the teeth and gums. For children there are special systems for the primary and mixed dentition periods; in teens and adults, the treatment is widely used. We discuss the differences by age group in detail in our article at what age can clear aligners be worn.
Gum health, on the other hand, is a prerequisite for treatment. Starting tooth movement in a mouth with active gum inflammation (periodontitis) can accelerate bone loss. For this reason, gum treatment is done first, and orthodontic treatment begins once the inflammation is under control. Untreated cavities should likewise be dealt with first.
The third and often overlooked condition is compliance. The aligners need to be worn about 20-22 hours a day; they are taken out only while eating, drinking (except water) and brushing. For someone who frequently takes out their aligners and forgets them, treatment does not progress as planned. Being sure that you can take on this responsibility is as important a part of suitability as the clinical findings.
Can people with missing teeth or crowned teeth use clear aligners?
Yes, many people with missing teeth or crowns can use clear aligners; however, these situations are included in the planning. After a tooth extraction, neighboring teeth can tilt toward the gap. Clear aligners can upright these teeth to create a more suitable space for a future implant or bridge, or close small gaps. We explain this topic in more detail on our page on clear aligner treatment with missing teeth.
Restorations such as crowns, bridges and veneers do not prevent treatment, but some technical points are taken into account. The add-ons that help the aligner grip the tooth are bonded to porcelain surfaces using different methods than on natural teeth. Bridge units that are joined together cannot move independently of each other, so they are treated as fixed in the planning. Because implants are fused to the bone, they do not move at all; for this reason, when orthodontic treatment is needed, it is preferable to place the implant after the teeth have been aligned, if possible.
How is suitability for clear aligners assessed?
Suitability is determined through an orthodontic examination and records; photos online or short quizzes cannot replace this assessment. At our clinic, the process usually follows these steps:
- Examination and consultation: Your complaints, expectations and dental history are discussed; an assessment of the mouth and face is done.
- X-rays: The roots, bone and jaw relationships are examined with a panoramic X-ray and, if deemed necessary, a cephalometric X-ray.
- Digital scan: A three-dimensional model of the teeth is taken with an intraoral scanner; no impression material is used.
- Planning: The orthodontist digitally plans in what order and how far the teeth will move and shares the estimated duration.
At the end of these stages, it becomes clear whether clear aligners are suitable for your case and, if necessary, which additional procedures (such as elastics, interproximal reduction or gum treatment) will be needed. Fee information is also provided in writing after the examination and planning. For a more general introduction, you can read our what are clear aligners page.
Who are clear aligners not suitable for? A short summary
In summary, the answer to who clear aligners are suitable for is: people with alignment problems of dental origin, whose gum health is under control and who are ready to wear the aligners consistently. Severe skeletal discrepancies, untreated gum disease and low compliance are the main factors that limit the success of treatment. The soundest approach is for the decision to be made not by the person themselves but by an orthodontist after a detailed examination. For detailed criteria, you can also take a look at our guide page who are clear aligners suitable for.
When should you come in for a clear aligner examination in Ankara?
If crowding, gaps or a bite problem in your teeth bothers you aesthetically or functionally, it is helpful to have an assessment without waiting for the problem to grow. At our clinic in Park Oran Ofis next to Panora Mall in Çankaya, our orthodontist, Funda Pekyılmaz Sarıkaya, specialist orthodontist (Uzm. Dt.), reviews the options suitable for your case with you after the examination. To make an appointment, you can reach us through our contact page.
Frequently asked questions
Can clear aligners be used at any age?
There is no strict upper age limit for clear aligners. What matters is that the teeth and gums are healthy. There are different planning approaches for children, teens and adults, and suitability is determined by an examination.
Can someone with gum recession use clear aligners?
Gum recession alone is not an obstacle, but if there is active gum inflammation, it is treated first. Once the inflammation is under control and if bone support is sufficient, orthodontic treatment can be planned. Gum health is monitored regularly throughout treatment.
Will clear aligners work if I have a jaw problem?
If the problem is of dental origin, clear aligners can be effective in most cases. In severe skeletal problems caused by the position of the jawbones, however, treatment may need to be planned together with surgery. The orthodontist makes this distinction after X-rays and an examination.
How many hours a day do I need to wear the aligners?
It is generally recommended that the aligners be worn 20-22 hours a day. They are taken out only while eating, drinking anything other than water and brushing your teeth. Not keeping to this time can make treatment take longer or prevent the planned movements from happening.
