When braces are first applied, you might notice a mild lisp or have trouble pronouncing some words. This is a normal reaction as your tongue and lips learn to adapt to the new appliances.
Your mouth may begin producing more saliva than usual during the first day or two. This response fades as your mouth becomes accustomed to the braces and finds a new balance.
Mild soreness or tenderness in the teeth and gums is common as they start moving into proper alignment. Soft foods and over-the-counter pain relief can help ease discomfort during this initial adjustment.
“A slight lisp or difficulty pronouncing certain words at first. Increased saliva production as your mouth adjusts to the braces. Tenderness and soreness.”
Author’s summary:
The first day with braces often brings minor speech changes, extra saliva, and tenderness, all of which ease as your mouth adjusts to the new setup.