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Why Isn’t My Invisalign Fitting Correctly? A Quick Guide

Invisalign is a popular orthodontic treatment that uses custom-made clear aligners to gently move teeth into the desired position. The aligners are comfortable and discreet, making them a great alternative to traditional braces. 

However, if the aligners don’t fit correctly, they won’t be able to do their job properly. If you’re having trouble with your Invisalign fitting correctly, this article will help you understand why and what you can do about it.

How Does Invisalign Work? 

Invisalign works by gradually shifting teeth into the right position with the help of a series of custom-made aligners. Each aligner is designed according to your individual dental needs and is made to fit snugly around your teeth. The aligners must fit correctly so that they can apply the right amount of pressure to move your teeth in the right direction. If the aligners don’t fit properly, they won’t be able to do their job efficiently, and the treatment won’t be as effective.

Why Your Aligners Might Not Fit Correctly 

There are several reasons why your Invisalign aligners might not be fitting correctly. The most common reason is that your teeth have moved since the aligners were first made. This can happen if you don’t wear the aligners for the prescribed amount of time each day, or if you don’t follow the instructions for cleaning and care of the aligners. Another common reason for improper fitting is that the aligners have been damaged, either by accident or through normal wear and tear.

In some cases, the issue may be related to the initial fitting of the aligners. If the aligners were not fitted properly in the first place, they may not fit correctly even when they are new. It’s also possible that the aligners have been incorrectly designed. This can occur if the dentist does not take accurate measurements or does not use the latest technology to plan your treatment.

What to Do If Your Aligners Don’t Fit

If your Invisalign aligners don’t fit correctly, you must contact your dentist as soon as possible. They will be able to assess the situation and determine the best course of action. This may involve making adjustments to the aligners or creating a new set of aligners that are better suited to your needs. In some cases, your dentist may recommend changing the treatment plan and using a different type of orthodontic appliance. No matter what the issue is, it’s important to address it quickly. If the aligners don’t fit properly, they won’t be able to move your teeth into the desired position and the treatment won’t work as well.

How Should Invisalign Fit?

Invisalign aligners should fit snugly against your teeth. They should not be loose or uncomfortable. When they are first put in, they may feel tight and may cause some minor discomfort. This is normal and should subside after a few days. The aligners should not move around when you are speaking or eating. If you feel like your aligners are too loose or too tight, contact your dentist to discuss the issue.


In conclusion, Invisalign is a great way to straighten your teeth without having to wear bulky metal braces. However, some common issues can arise with Invisalign that could cause it to not fit correctly. These issues can include improper placement of the aligners, not wearing the aligners long enough, or not wearing them at all. In some cases, the fit may be off due to the anatomy of the mouth not being suitable for the Invisalign treatment. 

If you are having trouble with your Invisalign fitting correctly, it is best to consult your dentist or orthodontist to determine the cause and receive the best advice for a solution. With the right adjustments and modifications, you can get the perfect fit and smile you desire.

If you are looking for Invisalign dentists, come to Manassas Smiles. We offer complete dental care services like cosmetic dentistry, dental implants, or gum disease treatment. Contact us now to schedule an appointment. 

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