The length of treatment depends on the complexity of the case and how consistently the aligners are worn. Aligners need to be worn at least 22 hours per day. Depending on how consistently the patient wears them, treatment time may vary from 6 to 24 months.
Many adults choose Invisalign because:
- It is discreet and almost invisible
- Aligners can be removed for eating and brushing
- There are usually fewer emergency visits compared with fixed braces
However, Invisalign is not ideal for every case. Severe bite problems or very complex tooth movements may still be better treated with fixed braces.
- Crowded teeth
- Gaps between teeth
- Overbite (deep bite)
- Crossbite
- Underbite in some cases
Clear aligners gradually move the teeth into the correct position and can improve bite relationships. Successful treatment requires good patient compliance, with aligners worn for at least 22 hours per day.
However, very severe skeletal problems may require fixed braces or additional orthodontic techniques.
For teenagers, Invisalign offers several advantages:
- The aligners are almost invisible
- They can be removed for eating, brushing, and special occasions
- There are no brackets or wires that can irritate the mouth
However, successful Invisalign treatment requires good patient compliance. Aligners need to be worn at least 22 hours per day to achieve the desired results.
For younger children, Invisalign may not always be the best option because they may not wear the aligners consistently. In some cases, fixed braces or other orthodontic appliances may be more suitable.
The most appropriate treatment option can be determined during an orthodontic consultation, after a careful assessment of the teeth, bite, and stage of dental development.
Patients are advised to:
- Brush their teeth after every meal before putting the aligners back in
- Floss daily to remove plaque between the teeth
- Clean the aligners regularly using a soft toothbrush and water
- Avoid drinking sugary or coloured drinks while wearing aligners
Aligners should always be removed before eating or drinking anything other than water.
Keeping both your teeth and aligners clean helps prevent tooth decay, staining, and bad breath during treatment.
To look after your aligners properly, you should:
- Wear them for at least 22 hours per day, removing them only for eating, drinking (except water), and brushing your teeth
- Change the aligners as advised by your orthodontist, usually every 7–10 days
- Brush your teeth after every meal before putting the aligners back in
- Clean the aligners daily using a soft toothbrush and room-temperature water; special cleaning crystals or tablets can also be used to keep aligners clean
- Avoid drinking sugary or coloured drinks while wearing the aligners
- Store the aligners in their protective case when not in use
- Avoid exposing them to hot water, as heat can distort the plastic
- Use aligner chewies to help the aligners fit properly and improve treatment tracking
Good hygiene and consistent wear are very important for successful treatment. Keeping your aligners clean also helps prevent tooth decay, staining, and bad breath during orthodontic therapy.
Each set of aligners is designed to move the teeth gradually and safely. Changing them at the correct time helps ensure that the teeth continue moving according to the planned sequence.
To achieve the best results, aligners should be worn for at least 22 hours per day and removed only for eating, drinking (except water), and cleaning the teeth.
Your orthodontist will advise you on the appropriate wear schedule and when to change each set of aligners based on your treatment progress.
At these appointments, your orthodontist will:
- Check that the teeth are moving as planned
- Make sure the aligners are fitting properly
- Provide the next sets of aligners
- Monitor your oral health and bite changes
- Make any necessary adjustments to the treatment plan
Regular check-ups are important to ensure that the treatment is progressing correctly and efficiently. If aligners are worn as instructed for at least 22 hours per day, most patients progress smoothly between visits.
If you experience any problems with your aligners or have concerns during treatment, you should contact your orthodontic practice for advice.
You may feel some tightness or discomfort when putting the aligners back in, as the teeth may have started to move slightly. In most cases, wearing the aligners consistently again will allow treatment to continue as planned.
If aligners have not been worn for more than one or two days and they no longer fit properly, you should contact your orthodontist for advice. In some situations you may need to wear the previous aligner again or extend the wear time of your current aligner.
Consistency is very important during Invisalign treatment to ensure the teeth move according to the planned sequence.
However, this depends on the stage of treatment and your orthodontist’s recommendation. Whitening is often recommended towards the end of treatment, when the teeth are close to their final position.
It is always best to discuss teeth whitening with your orthodontist first to ensure it is done safely and effectively.
- Mild discomfort or pressure. Taking painkillers such as ibuprofen or paracetamol may help relieve discomfort. It may also be helpful to eat softer foods that do not require much chewing during the first few days.
- Slight changes in speech while you are adjusting to the aligners.
- Increased awareness of the aligners in your mouth.
Most patients adapt to aligners within a few days. Wearing them consistently for at least 22 hours per day will help ensure smooth and effective treatment progress.
- Place the aligner gently over your teeth
- Press down evenly with your fingers, starting from the front teeth and moving towards the back
- Make sure the aligner is fully seated and fits snugly
In some cases, your orthodontist may recommend using aligner chewies, which help the aligners fit properly and improve treatment tracking.
Aligners should never be bitten into forcefully to place them, as this may damage the aligner.
