Talk it Out: Will Invisalign Affect the Way I Speak?

September 2, 2025

Woman holding Invisalign clear aligner.

If you’re thinking about getting Invisalign, you probably already know how it can straighten your teeth discreetly and comfortably. But one common question many patients have is: “Will Invisalign affect the way I speak?” It’s a valid concern — after all, clear aligners sit directly on your teeth, and even small changes in your mouth can influence how you pronounce certain words. The good news is that while Invisalign may cause a slight adjustment period, most patients find that any speech changes are temporary and minor.

How Invisalign Works

Invisalign aligners are custom-made, clear plastic trays that fit snugly over your teeth. Each set is designed to gently move your teeth into their desired position over time. Because they’re made from thin, smooth material, Invisalign aligners are far less bulky than traditional braces — making them much less likely to interfere with speech.

However, since your tongue and lips play a key role in forming sounds, anything new in your mouth — even a thin layer of plastic — can take a little getting used to.

Possible Speech Changes with Invisalign

During the first few days of wearing your aligners, you might notice:

  • A slight lisp or whistling sound: This is the most common change patients experience. It happens when your tongue briefly struggles to adapt to the new surface of the aligners, especially when pronouncing “s” or “sh” sounds.
  • Minor tongue or cheek friction: Your tongue may need time to get used to the aligners, which can affect the precision of your speech at first.

The good news? These effects are temporary. As your tongue adjusts to the aligners’ presence — typically within a few days to a week — your speech will naturally return to normal.

Tips to Adjust Faster

If you’re self-conscious about speaking clearly with Invisalign, try these helpful tips to speed up your adjustment:

  • Practice speaking out loud. Read a book, sing along to music, or have conversations while wearing your aligners. The more you talk with them in, the quicker your mouth will adapt.
  • Wear your aligners full-time. Invisalign works best — and your adjustment goes faster — when you wear them the recommended 20 to 22 hours per day. Constantly removing them can delay the adaptation process.
  • Stay patient. Remember, any speech differences are only temporary. Within a week or two, most people forget they’re even wearing aligners.
  • Keep your aligners clean. Dirty or cloudy aligners can affect how your mouth feels and how air passes through when you speak. Regular cleaning ensures a more comfortable fit.

When to Talk to Your Dentist

If you experience persistent speech difficulties after several weeks, contact your dentist or orthodontist. They can check whether your aligners fit properly or if minor adjustments could help.

Invisalign may cause slight, short-term changes in your speech, but with practice and consistency, most people adapt quickly. The aligners are designed for comfort, and within days, speaking with them will feel completely natural. Invisalign not only helps you achieve a straighter smile but does so without compromising your confidence — both in how you look and how you speak.

About the Practice

Here at Kraft & Schrott Dental, we can straighten your teeth without cumbersome metal. Clear braces like Invisalign are a wonderful treatment option! At our practice, you’ll enjoy fully personalized dental treatments at our cutting-edge, state-of-the-art dental office. We have U.S. and European-trained cosmetic dentists, so you can rest assure that you’re getting the very best care available. Let us help you start your journey towards a straighter, healthier smile. Schedule an appointment online or call (617) 227-4924.