Many patients believe that once their braces come off, their teeth will stay aligned for good. However, it is not unusual for teeth to become crooked again over time, even years after treatment. This raises important questions: why do teeth become crooked again? And, more importantly, what can be done to correct it and prevent it from happening again?
Orthodontic relapse is relatively common and can happen for different reasons, such as not wearing the retainer properly, natural changes in the bone structure or habits such as bruxism. Identifying the cause is the first step to choosing the right treatment.
In this article we explain why teeth can become crooked after braces, the most effective solutions to get an aligned smile back and the care that helps prevent new misalignment.
If you live in or visit the Algarve and notice that your teeth have moved again, at Atelier do Sorriso in Almancil (Faro) we have specialists in orthodontics and cosmetic dentistry ready to assess your case and propose the most suitable treatment.
Why Do Teeth Become Crooked After Braces?
When teeth move again after orthodontic treatment, it is called orthodontic relapse. There are several reasons why this happens, even after years of correction.
Not wearing the retainer
The most common reason is not wearing the retainer, or wearing it incorrectly. After fixed braces or clear aligners are removed, the teeth tend to “remember” their original position. Wearing the retainer regularly — removable or fixed — is essential for stable teeth.
Natural changes in the mouth over time
Even with a retainer, teeth can move slightly as part of natural ageing. The upper and lower jaws change throughout life, which can cause small tooth movements.
Bone growth problems or bruxism
In younger patients, uneven bone growth can affect the alignment achieved with treatment. In adults, bruxism (grinding or clenching the teeth) puts excessive pressure on the teeth and contributes to unwanted movement.
These factors show that keeping the alignment you achieved takes more than removing the braces: it requires ongoing follow-up and specific care.
What to Do When Teeth Become Crooked Again

Realising that your teeth are crooked again after braces can be frustrating, but the good news is that there are effective solutions. The first step is to get professional advice before the misalignment gets worse.
Orthodontic assessment
A consultation with the orthodontist is essential to find the cause of the relapse. The specialist looks not only at the visible alignment but also at the bite, the position of the roots and bone stability.
Additional examinations
X-rays, clinical photos and, in some cases, a 3D intraoral scan allow an accurate diagnosis. This helps decide whether a simple adjustment is enough or whether a new treatment plan is needed.
A personalised treatment plan
Every patient has different needs. Some can correct the misalignment with retainers alone, while others need to go back to clear aligners or even fixed braces. The choice depends on how much the teeth have moved and the overall health of the mouth.
The most important thing is not to delay. The sooner you seek help, the quicker and simpler the correction tends to be.
Treatments to Correct Crooked Teeth After Braces
The choice of treatment depends on the degree of misalignment, how long ago the braces were removed and the patient’s expectations. Today there are several safe and effective options to correct orthodontic relapse.
Invisalign (clear aligners)
Invisalign, also known as clear aligners, is one of the most popular solutions for adults who want to straighten their teeth discreetly. Invisalign allows gradual adjustments and can treat anything from small movements to more complex cases. It is also removable, which makes oral hygiene and eating easier.
Fixed or removable braces again
For more significant misalignment, it may be necessary to wear fixed braces again or opt for modern removable versions. Although less discreet than clear aligners, they remain an effective and precise solution.
Permanent or removable retainers
When the teeth have moved only slightly, retainers may be enough to stabilise and reposition them. Retainers can be fixed (bonded to the back of the teeth) or removable, and should be worn as instructed by the orthodontist.
Combined solutions with cosmetic dentistry
In some cases, aesthetic treatments can complement orthodontic correction. Dental veneers, cosmetic contouring or even teeth whitening can improve the smile where the misalignment is minimal but appearance is a priority.
With these options, it is possible to restore alignment and confidence in your smile, whatever the severity of the problem.
How to Stop Teeth from Becoming Crooked Again
Once the problem is corrected, prevention is key to keeping your teeth aligned over the years. Small precautions make all the difference in the long term.
Keep wearing your retainer
The retainer is the key to stopping the teeth from moving again. Whether fixed or removable, wear it exactly as your orthodontist advises.
Regular dental check-ups
Check-ups make sure the retainers are in good condition and the teeth are staying in the right position. In many cases, simply replacing a retainer can avoid new orthodontic treatment.
Healthy habits to preserve alignment
Managing bruxism with a night guard, keeping good oral hygiene and not using your teeth to open packaging or bite objects all help the results last longer.
Keeping your smile aligned depends not only on the treatment but also on discipline and regular follow-up.
Frequently Asked Questions about Crooked Teeth After Braces
Is it normal for teeth to become crooked again after braces?
Yes. Teeth naturally move, and this can happen even years after treatment, especially if the retainer is not worn properly.
Can Invisalign correct crooked teeth after braces?
Yes. Clear aligners are effective for mild and moderate relapse. As well as being discreet, they allow gradual adjustments without disrupting daily life.
How much does it cost to straighten teeth again?
The price of orthodontic treatment depends on the severity of the case and the technique chosen. Retainers are more affordable, while Invisalign or fixed braces are a bigger investment.
Do I need to wear a retainer for life?
In many cases, yes. Fixed or removable retainers help keep the teeth stable. The exact duration depends on the clinical assessment and how the mouth behaves over time.
Can teeth become crooked even with a retainer?
If the retainer is not properly fitted or wears over time, it can lose effectiveness. That is why regular check-ups are needed to make sure it is doing its job.
Can I use veneers instead of braces to correct crooked teeth?
Dental veneers can be an aesthetic alternative for slight misalignment. However, when the misalignment affects function, orthodontic correction is still the right solution.
How long does it take to correct teeth that have moved again?
It depends on how much they have moved. Small movements can be solved in a few months with clear aligners or active retainers, while more complex cases need longer treatment.
Can children and teenagers also have teeth that move after braces?
Yes. During growth, changes in the bones can affect tooth alignment. In these cases, ongoing follow-up is even more important.
Why Choose Atelier do Sorriso in the Algarve
Realising that your teeth have moved again after braces can be frustrating, but choosing the right clinic makes all the difference to the final result. At Atelier do Sorriso we combine experience in orthodontics with modern cosmetic dentistry solutions, for effective, personalised treatment.
Expertise in orthodontics and cosmetic dentistry
Our team has advanced training in orthodontic treatment, from clear aligners (Invisalign) to retainers and complementary aesthetic solutions such as veneers and whitening.
Modern technology for diagnosis and treatment
We use 3D intraoral scanners and digital examinations to plan each stage of treatment precisely. This technology helps predict results and achieve faster, more comfortable alignment.
Located in Almancil, in the centre of the Algarve
We are in the heart of the Algarve, in Almancil (Faro), easy to reach for both residents and visitors looking for quality treatment during their stay in the region.
Atelier do Sorriso combines clinical knowledge, advanced technology and close follow-up to give patients back the aligned, healthy smile they are looking for.
Get Your Smile Back with Confidence
If your teeth have become crooked after braces, it does not mean all the effort was lost. Orthodontic relapse is common, but there are effective solutions for every situation — from retainers to Invisalign or veneers when appearance is the priority.
The most important thing is not to ignore the problem. Small misalignments tend to get worse over time and can affect your bite, oral hygiene and even your facial appearance. The sooner you seek help, the simpler the treatment will be.
At Atelier do Sorriso, in Almancil, Faro, you will find a team specialised in orthodontics and cosmetic dentistry, ready to assess your case with advanced technology and propose the most suitable solution.
If you have noticed your teeth moving again, book an appointment and find out how we can help you get back the aligned smile you deserve.
Book Your Appointment Now: Atelier do Sorriso Clinic
Give your smile the care it deserves — with confidence, clarity and safety.
📍 Address: Rua João de Deus, Lote 1C, Almancil, Algarve (See on Maps)

