How Long Does Invisalign Take (And Why)?

Exact Answer: 12 Months- 24 Months

Invisalign is a common orthodontic device that is used to straighten teeth. It is the replacement for dental braces used to adjust teeth. One of the most important and useful qualities of Invisalign is that they are transparent reducing the showing up of the normal metal braces. The Invisalign braces have undergone a lot of changes making it easier for people to get the treatment of their teeth done without any awkwardness.

With an easier application, it gets easier to wear these braces. Not just the advantage of being transparent, Invisalign braces can also be removed and worn again. Many stars who wish to get their teeth to straighten use Invisalign as it prevents the chances of getting highlighted like the metal braces. Invisalign also prevents any sort of interference with your work because of its easier application.

How Long Does Invisalign Take

How Long Does Invisalign take?

TreatmentDuration Of Invisalign
Normal misaligned teeth12 Months
Crowded Teeth24 Months

Invisalign takes approximately 12 moths-24 months on average. However, the duration of Invisalign also varies with the condition of the teeth. An average human takes approximately 12 months to get his teeth properly aligned. Invisalign helps you get a straight smile. The most common reason for using Invisalign is the shifting of teeth over time because of not using retainers.

Like every human’s fingerprints, the design and alignment of everyone’s teeth are also different. We all want a clearer and straight smile because of which one resorts to solutions like Invisalign. Some people who need a minor treatment for a flawless smile tend to wear Invisalign for just 6 months. In some severe cases, the Invisalign might take time to align the teeth properly.

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Some main contributors for the longer duration of Invisalign include teeth crowding, gaps in teeth, age, compliance, and many more:

  1. Teeth Crowding: A smaller jaw might result in over-crowding of teeth that lead to the misalignment. Crowding can be corrected within 6 months but major cases of crowding take a time of 12-18 months to get corrected.
  2. Gaps in teeth: Diastemata can be a result of overgrowth or groth of teeth smaller as compared to the jaw. Depending on the adjustment of the teeth it can take upto 18 months to get the gaps in teeth fixed.
  3. Age: In comparison to old people, teeth of teens and adults tends to adjust faster and hence the treatment gets fixed quickly.
  4. Compliance: Wearing your invisalign properly for the correct duration of time is important for thr treatment. It is also necessary to have regular checkups by the dentist.

Why Does It Take This Long For Invisalign?

The treatment of Invisalign braces depends on the shape and adjustment rate of the teeth. Invisalign uses plastic trays to slowly realign the teeth. The trays are to be worn for 20-22 hours a day depending on the alignment of the teeth. It is advised to remove the aligners while brushing or eating.

The Invisalign aligners are made after taking a 3-D image of the teeth and making a model based on that. The Invisalign takes time as it is difficult for the plastic trays to shift the teeth from one place to another. The treatment can also be hindered by factors like over-biting, under-biting, crowding, or gap. If the upper teeth overlap the lower teeth or vice versa then the Invisalign might take longer.

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Following a proper schedule is important as it helps the teeth to get fixed properly. It is important to keep up with the dentist appointments. The removal of Invisalign should only be done for a short duration like in eating, drinking, or brushing. It is also important to change the trays regularly to reduce any chances of bad alignment. It is also really necessary that you adhere to the diet plan and stay away from food that might strengthen your teeth.


It can hence be concluded that the Invisalign takes a time of 12 months- 18 months depending on the alignments of your teeth. Since, the Invisalign are plastic trays the treatment can also be affected by factors like age, crowding, gapping, over-biting, or under-biting. It is also important to keep the Invisalign on for a proper duration of time to prevent any extra treatment time.


  1. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign – ScienceDirect
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Hi! I'm Nidhi.

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