Clear aligners are removable, near-transparent trays made from a digital scan. Worn 20 to 22 hours a day and changed every week or two, they move teeth gradually. They suit mild to moderate crowding or spacing. Severe cases still do better with fixed braces, and we will tell you which you need.
What Are Invisible Braces?
Invisible braces — more accurately called clear aligners — are a series of removable, near-transparent trays that fit closely over your teeth. Each tray in the series is shaped slightly differently from the one before it, so that when it is seated it applies gentle, controlled pressure to particular teeth and moves them a small amount. You work through the trays in order, and the teeth travel gradually from where they are today towards the position set out in the treatment plan.
Because the trays are thin and clear, most people will not notice them in normal conversation, and because they are removable you take them out to eat and to clean your teeth. Clear aligner systems are made by a number of manufacturers, but the principle is the same across the category: a digital plan, a sequence of trays worn in order, and retainers at the end.
Who Is a Candidate for Clear Aligners?
Aligners are not the right answer to every orthodontic problem, and being honest about that is part of the assessment. In most cases they are well suited to:
- Mild to moderate crowding, where the teeth overlap or are rotated but the jaws themselves are reasonably positioned.
- Spacing and gaps between the teeth, including a gap between the upper front teeth.
- Relapse – teeth that have drifted back out of line years after braces were completed in childhood, most often because retainers were stopped.
- Adults who want their teeth straightened but would rather not wear visible metal brackets at work.
- Teenagers whose permanent teeth are through, and who are reliable enough to wear the trays for the required hours each day.
More complex problems — severe crowding, significant overbites, underbites or crossbites, teeth needing substantial rotation or bodily movement, skeletal discrepancies between the jaws, or plans that involve extractions and closing the space afterwards — are usually treated more predictably with fixed braces. Your orthodontist will tell you plainly if that applies to you, rather than stretching aligners beyond what they do well.
How Clear Aligner Treatment Works, Step by Step
1. Orthodontic assessment
Dr. Ruchi Sinha, our Senior Consultant Orthodontist (MDS Orthodontics), examines your teeth, gums and bite and reviews X-rays and photographs. Any decay or gum inflammation is treated first, because teeth can only be moved safely through healthy bone and gum. This is also where aligners and fixed braces are compared for your particular case.
2. Intra-oral scan
Instead of a tray of impression putty, an intra-oral scanner records the shape of your teeth as a 3D digital model. It takes a few minutes, there is nothing to gag on, and that model becomes the basis of everything that follows.
3. Digital treatment plan
The movement of each tooth is planned in sequence on screen, and you can usually see a simulation of the projected end result before treatment begins. The number of trays and the likely duration are discussed with you at this stage.
4. Wearing the series of trays
Each tray is worn for roughly one to two weeks, as directed, before you move on to the next. Small tooth-coloured attachments are sometimes bonded to a few teeth to give the trays something to grip, and are removed at the end. Reviews every few weeks confirm that the teeth are tracking to the plan.
5. Retainers
Once the teeth have reached their planned position, retainers are fitted. Teeth tend to drift back over time, and retainers — a thin fixed wire bonded behind the teeth, a clear removable retainer worn at night, or both — are what hold the result. Retention is a permanent part of orthodontic treatment, not an optional extra.
Wear Time: Why Compliance Decides the Result
Aligners only move teeth while they are actually in the mouth. They are typically worn 20 to 22 hours a day and taken out only for meals, hot drinks and cleaning your teeth. If they spend much of the day in a pocket or a handbag, the teeth stop tracking to the plan, the next trays no longer seat fully, and treatment stalls or has to be re-planned.
Fixed braces work whether or not you feel like wearing them; aligners work because you wear them. If you already know that this discipline will be difficult, say so at the assessment — fixed braces may simply be the better choice for you.
Clear Aligners Compared With Fixed Braces
- Appearance – aligners are near-invisible in conversation; fixed braces, even ceramic ones, are visible close up.
- Hygiene – aligners come out, so you brush and floss normally; fixed braces need careful cleaning around every bracket.
- Diet – nothing is off the menu with aligners; fixed braces restrict hard and sticky foods.
- Comfort – no brackets or wires to rub the cheeks, though each new tray feels tight for a day or two.
- Control – fixed braces still give the orthodontist more control over difficult movements and complex bites.
- Responsibility – the result with aligners depends on your own wear time; with fixed braces it does not.
What to Expect During Treatment
Mild pressure or tenderness for a day or two after changing to a new tray is normal and usually settles quickly; it is a sign the tray is doing its work. Speech can feel slightly different at first and then adapts. Trays are rinsed and brushed gently, and should not be put in hot water, which can distort them. Because teeth are being moved throughout, brushing twice a day and cleaning between the teeth remain essential.
Clear Aligner Treatment at SouthEx Dental
At SouthEx Dental in South Extension II, aligner treatment is planned and supervised in the clinic by our orthodontist, with the scan, the plan and the reviews all done in person. We will tell you honestly whether aligners can achieve what you want, whether fixed braces would give a better result, and what the trade-offs are, before you commit. To arrange an orthodontic assessment, call +91-9810669747.
Frequently asked questions
Related treatments
Orthodontic Treatment (Braces)
Metal, ceramic, self-ligating and lingual braces to straighten teeth and correct the bite.
Intra-Oral Scanning
A handheld scanner builds a precise 3D model of your teeth in minutes. No putty trays, no gagging.
Comprehensive Diagnosis & Treatment Planning
A full examination, imaging where needed, and a written plan with charges — before any treatment starts.

