This post contains affiliate links. #ad
By Susan Volk, BURST Ambassador, RDH — Last updated August 19, 2026
Short answer: Replace your toothbrush head every 3 months, or sooner if bristles are visibly splayed or flattened — worn bristles clean measurably less.
A patient came in for her regular cleaning still using the same Burst head from her first order — over seven months old. Her hygienist pulled it out to show her exactly what to look for.
The visual test hygienists use
Fresh bristles stand straight up in even rows. Worn bristles splay outward or flatten — once they do, they can’t reach the gumline the way they’re designed to.
What happens if you don’t replace them
Flattened bristles reduce contact with the tooth surface and gumline even though the motor still runs at full strength.
Subscribe-and-save vs. one-time purchase
A subscription matched to the 12-week replacement cycle dentists recommend solves the “I forgot” problem that caused the seven-month-old head above.
Frequently Asked Questions
How often should I replace my Burst toothbrush head?
Every 3 months, or immediately if bristles are visibly worn.
Do Burst heads fit other toothbrush handles?
No — Burst heads are made for their matching Burst handle (Pro, Original, Curve, Nova, and Kids each have their own).