Invisalign is a system of polyurethane dental aligners that can gradually correct minor orthodontic problems. Invisalign might not be right for everyone, but for many who suffer from minor orthodontic issues, Invisalign can straighten teeth without the embarrassment, expense and pain of traditional braces. Here are some of the drawbacks and risks associated with using Invisalign aligners.


Invisalign May Not Be Effective for All Patients

Unlike traditional braces, Invisalign aligners don't exert the amount of pressure required to correct serious orthodontic problems. Invisalign is intended to correct mild orthodontic problems only.

Invisalign may not be able to move certain teeth. The aligners may not be able to grasp and exert appropriate force on teeth like the lower premolars.

Those who suffer from bruxis (grinding or clenching of teeth) may damage the Invisalign aligners. New aligners may have to be ordered if this occurs.


Invisalign Aligners May Be Difficult to Use Properly

Patients must be committed to wearing the aligners day and night, except when eating, drinking or cleaning their teeth. If you don't wear the aligners consistently, they won't be as effective; unfortunately, many people forget to replace the aligners, and, sometimes, aligners get lost.

It's believed that traditional braces can contribute to tooth decay, because it's difficult to clean the teeth when you're wearing braces. Since Invisalign is removable, you can clean the teeth after eating and before replacing the aligners. However, it's crucial to remember to do this, otherwise you're making yourself vulnerable to tooth decay.


Some Patients May Be Allergic to Invisalign

Rarely, some users may develop an allergic sensitivity to Invisalign. Symptoms of minor allergic reactions include nausa, sore throat and cough. The FDA has received reports of serious reactions in which swelling and pain have extended from the throat to the upper chest and bronchial passages, necessitating emergency medical treatment and the cessation of Invisalign treatment.


Invisalign is Not as Effective as Traditional Braces

While Invisalign may be more discreet and more comfortable than traditional fixed appliance braces, it's not as effective. Invisalign cannot correct severe orthodontic problems. Many dentists believe that Invisalign doesn't correct minor orthodontic problems as effectively as would traditional fixed appliances.


Other Problems with Invisalign

Invisalign aligners are expensive, much more so than traditional braces. New aligners are to be put in about every two weeks, in order to gradually move teeth. If the aligners aren't worn properly, then they'll cease to fit. New impressions will have to be taken and new aligners made.

Invisalign aligners may cause patients to develop a slight lisp. This is normal and usually goes away once you've become accustomed to wearing Invisalign aligners.

Despite to computerized projection of what your teeth will look like when you're finished with Invisalign treatments, actual results may vary. The last aligner does not always move the teeth into the final projected position. If you're not satisfied with the final position of your teeth after Invisalign treatment, you may need to order additional aligners to continue moving your teeth.