Invisalign FAQs

Smiling young woman, putting in her upper Invisalign tray.  

Invisalign Frequently Asked Questions (FAQs)


What is Invisalign?

Invisalign is the invisable way to straighten teeth without braces.  Invisalign uses a series of clear, removable aligners that gradually straighten your teeth, without the use of metal brackets, wires and other appliances. 

How does Invisalign straighten my teeth?

Over the course of treatment, you will be supplied with a series of clear aligners. Each aligner will make slight adjustments to tooth position, a process that is mapped out in advance by your Orthodontist, specifically for your situation. When the aligners are placed on the teeth, they cause the teeth to gradually shift from their current position. After approximately 2-3 weeks, you will begin using the next set of aligners, which will continue the teeth straightening process.

What are the Primary benefits of Invisalign?

  • Invisalign aligners are virtually invisible. No one may even notice that you're wearing them, making Invisalign a seamless fit with your lifestyle.

  • Invisalign aligners are removable. For the best results and a timely outcome, aligners should be worn for 22 hours per day. However, unlike with braces, you have the flexibility to remove your aligners to eat and drink what you want during treatment. And you can also remove the aligners to brush and floss as you normally would, for fresh breath and good oral hygiene.

  • There are no metal brackets or wires that could cause irritation to your mouth, an advantage over traditional braces. Plus, since your office visits during treatment don't involve metal or wire adjustments, you'll likely spend less time in the doctor's chair.

  • Invisalign allows you to view your virtual results and treatment plan before you start so you can see how your straightened teeth will look when your treatment is complete. Instead of imagining how much better it can be, you'll be able to see it for yourself.

What are the clear aligners made of and what do they look like?

The virtually invisible aligners, which are made of a thermoplastic material uniquely developed for the Invisalign treatment plan, look similar to teeth-whitening trays. A series of Invisalign aligners are custom-made for you, to move your teeth in the sequence determined by your Orthodontist.


How long will treatment take?

The length of treatment depends on the severity of your case and can only be determined by your Orthodontist.  Patients can also optimize their treatment time by consistently wearing their aligners the proper number of hours per day.    


How often should you expect to visit your Orthodontist?

Your Orthodontist will schedule regular appointments usually about once every four to six weeks. The goal of these visits is to ensure that your treatment is progressing as planned – and to give you your next series of treatment trays. 


Will wearing Invisalign aligners affect my speech?

Similar to other orthodontic treatments, Invisalign aligners may temporarily affect the speech of some people, and you may have a slight lisp for a day or two. However, as your tongue gets used to having aligners in your mouth, any lisp caused by the aligners should disappear.


Will Invisalign treatment be painful?

Some people experience temporary discomfort for a few days at the beginning of each new set of aligners. This is normal and is typically described as a feeling of pressure. It's also a sign that Invisalign is working, as it moves your teeth to their final destination. This discomfort typically goes away in a couple of days.


How many patients have been treated with Invisalign?

Since 1998, over 3 million patients worldwide have been treated with Invisalign. 


What about Invisalign’s FDA clearance?

Invisalign aligners are classified as Class II medical devices by the FDA, and Align Technology, Inc., received the necessary 510K clearance from the FDA to be able to sell and market the Invisalign system in 1998.

You can also check out some great informational Invisalign videos on the "Videos" pull down menu above.  


Effectively treats a wide variety of cases, including crowding, spacing, crossbite, overbite and underbite.  
Straightens your teeth.  
Allows you to eat whatever foods you enjoy.
Lets you remove the device when you want.
Lets you enjoy virtually invisible teeth-straightening.
Allows you to brush and floss your teeth normally for better periodontal health.
Consists of smooth, comfortable plastic instead of sharp metal that is more likely to irritate your cheeks and gums.  
Frees up your busy schedule, with office visits only every four to six weeks.


                                                Invisalign Preferred Provider Company Logo



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  • Sunnyvale
  • 516 W. Remington Drive
  • Suite #3
  • Sunnyvale, CA
  • 94087
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  • Call: 408-736-8146