Does Invisalign Give You a Lisp? What to Expect and What Helps
Yes, Invisalign can give you a slight lisp, especially when you first start wearing aligners. The trays change the surface your tongue touches when you speak, which may affect sounds such as “s” and “z.” Not everyone notices a difference, and speech changes are usually temporary.
Why Can Invisalign Change Your Speech?
Invisalign aligners cover your teeth. They slightly change the surfaces inside your mouth. Your tongue needs to move precisely to produce certain sounds. An aligner can change where your tongue touches. So, sounds might change until you get used to it.
In a study of 30 Invisalign patients, researchers looked at how they spoke with their trays in and out. Wearing the aligners changed how people pronounced consonants. This was especially true for the “z” and “s” sounds.
If a tray does not sit properly against your teeth or irritates your tongue, ask your dentist to check its fit.
How Long Does an Invisalign Lisp Last?
A review of seven studies with 332 Invisalign patients found that most people with speech issues from clear aligners improved in 7–14 days. A smaller number took 30–60 days. The researchers rated the overall evidence as low quality. So, these timeframes can’t predict how long speech changes will last for any one person.
You may notice a change when switching to a new set of aligners. However, there’s no specific number of hours or days that works for everyone.
What Can You Do to Speak More Clearly?
Practice speaking with your aligners in. Speaking, reading aloud, or saying tough words can help you practice moving your tongue in the trays. Slow down when a word is hard to pronounce.
Wear your aligners as your dentist instructs. Invisalign recommends that patients wear aligners for 20–22 hours a day. Your provider will give you specific treatment instructions. Contact your dentist if an edge feels sharp or a tray does not fit correctly.
Does Everyone Get a Lisp With Invisalign?
No. Some people notice a slight change in speech, while others notice none. If your speech does sound different, it does not mean you will have a lisp throughout treatment. The amount of change and time needed to adjust vary from person to person.
When Should You Contact Your Dentist?
Contact your dentist if an aligner causes pain or irritates your tongue. Also, reach out if it doesn’t fit right or if your speech worsens instead of improving. You can also reach out if a speech change interferes with your work or daily life. You do not need to wait a set number of days to ask about a concern.
