General information, not advice. Written by the Dental Anchor team. This page explains how a treatment generally works — it is not a diagnosis, and only a dentist who has examined you can say what applies to your own case.
Last updated 27 July 2026
Clear aligners move teeth using a series of custom-fitted plastic trays, each one slightly different from the last, worn in sequence over weeks until the teeth reach the position the plan intended. Unlike a fixed appliance, the patient takes the tray out to eat and clean their teeth, and puts it back in for the rest of the day.
That difference in mechanism is also what makes this guide the honest counterpoint to fixed braces in Turkey, rather than a repeat of the same conclusion. Aligners genuinely suit treatment organised at a distance better than fixed braces do — not because they have no limits, but because several of the things that make braces hard to arrange abroad are not true of aligners in the same way.
What clear aligners are
Each tray is a thin, transparent shell shaped to sit over the teeth in a position slightly different from where they currently are. Wearing it applies gentle pressure that moves them toward that position over one to two weeks, before the next tray in the series takes over. The trays are produced from a digital scan or impression and a plan mapping out the small movements between the current position and the intended final one.
Small tooth-coloured shapes called attachments are often bonded to specific teeth first, giving a tray something more precise to grip for movements a smooth surface would not hold well on its own. The series is usually supplied in batches rather than one tray at a time.
Why they suit distance better than braces
Fixed braces need a dentist's hands at every adjustment. Aligners do not, for most of the course: trays are issued several at a time, wear is managed by the patient at home on a set schedule, and progress between chair visits can genuinely be checked remotely — by a clinician who has already examined the mouth in person and planned the sequence, comparing photographs against the plan rather than physically retensioning a wire.
That is a real structural advantage, not a marketing one. It is also why this article exists: the difference is genuine, and pretending fixed braces were equally suited to distance would be dishonest in the other direction.
What still needs a chair
None of that removes the chair entirely. Bonding attachments needs an appointment, as does interproximal reduction — a small, controlled amount of enamel removed between certain teeth where the plan calls for it, to create room for movement. Both are normal parts of aligner treatment, not add-ons an honest quote would leave off.
Periodic in-person review is also part of the plan, not optional: a clinician checks the teeth are tracking the trays as intended, not just that a batch has been worn. How often that needs to happen, and how it fits around travel, is worth establishing before treatment starts — the general question is covered in how long you should plan to stay in Turkey for dental treatment.
What aligners do less well
Aligners are not simply a like-for-like swap with fixed braces — the two differ in how much control they give over certain kinds of movement.
A 2025 systematic review and meta-analysis (Alhafi and colleagues) compared outcome quality and stability between clear aligners and fixed appliances. In cases that did not require an extraction, the two produced comparable outcome quality. In cases that did require an extraction, fixed appliances performed better, which the review attributes to greater control over that kind of tooth movement. Stability after treatment finished was similar between the two.
The review's own authors flag real limits on how much weight the comparison can carry: the included studies varied considerably in design, and follow-up was limited in several of them. That caveat belongs in this article rather than left out of it. The honest summary is that which appliance suits a given case depends on what needs to move, and that is a judgement made after an examination, not before one.
Aligners sent without an examination
This is the point worth being direct about. Treatment planned by a clinician who has examined the mouth in person, taken photographs and radiographs, and built a sequence from them is a different thing from a set of trays produced from an impression posted in with no examination behind it at all.
Underlying decay or gum disease does not pause while teeth are moved — it moves with them, and moving teeth through a mouth with active disease tends to make that disease worse, not better. What is worth sending for a genuine remote assessment, and what still needs to be seen in person, is covered in what photographs and X-rays are needed for an online assessment.
Has anyone examined my mouth in person, or has this plan been built from an impression alone?
Refinements are normal
The first series of trays does not always finish the job. Teeth sometimes track a little differently from the plan, and a second series — refinements — is a routine part of aligner treatment, not a sign that anything went wrong the first time.
What is worth establishing before starting is whether refinements are included in the plan already agreed, or treated as an extra course requiring a new impression and a new charge. Ask that question before, rather than assuming the answer either way.
What a dentist needs before advising
- Photographs of the teeth and bite, and how they meet when closed
- A panoramic X-ray at minimum, since root positions and any hidden decay affect what can safely be moved
- A digital scan or impression of the current tooth positions, from which the tray sequence is built
- Whether gum disease is present and stable, since moving teeth through active disease is not advisable
- Whether the case involves an extraction, which changes how much control the plan needs
Risks and limitations
- Relapse without retention — teeth drift back toward their original position once trays stop, the same as after fixed braces
- Results depend heavily on wear time — trays not worn for close to the intended hours each day do not move teeth as planned
- Attachments and interproximal reduction are irreversible in small ways — bonded attachments leave a mark on enamel when removed, and reduced enamel is not replaced
- Not every case is suitable — complex movements, particularly those involving an extraction, may be better controlled by fixed appliances
- Discomfort or pressure for a day or two with each new tray, which usually settles before the next one
Questions worth asking any Istanbul clinic
- Has my mouth actually been examined, or is this plan built from a posted impression alone?
- Does my case involve an extraction, and if so, why aligners rather than fixed braces?
- How will progress be reviewed while I am not in the chair?
- Are attachments or interproximal reduction part of my plan, and where?
- Are refinements included if the first series does not finish the job?
- Who provides retention afterwards, and for how long is it planned?
The short version
Clear aligners genuinely suit treatment organised at a distance better than fixed braces do: trays are issued in batches, wear is managed at home, and remote review is a real option once a clinician has examined the mouth and built the plan. That is not a small distinction.
What they do not remove is the need for an examination before anything is made, occasional chairside appointments for attachments and reduction, and — in cases needing an extraction — the possibility that fixed appliances simply control the movement better. The right choice is decided by what the case needs, not by which appliance travels better on paper.
References
Related reading
This guide provides general information about dental treatment and about choosing a clinic. It is not dental advice, and it does not describe treatment for any individual. Whether a treatment is suitable for you can only be determined by a licensed dentist who has examined you.