A major cause of lisps or whistling while talking is an overbite, which is when the upper teeth overlap the bottom teeth by too much. These problems can also be the result of gaps in the teeth, which allow air to escape when pressing the tongue against the teeth while talking, creating a whistling sound.

Can an overbite affect your speech?

The primary cause of this speech issue is an overbite. This is when the upper teeth overlap the bottom teeth too much. Additionally, gaps in the teeth can impede correct placement of the tongue and allow air to escape while talking, which creates a whistling sound.

Can fixing an overbite fix a lisp?

Lisp or Whistling

Braces can correct overbite, and close the gaps between teeth.