Replace toothbrush heads about every three months, or sooner if the bristles fray, as the ADA recommends. That is four heads a year per person, so yearly cost is four times the price of one head. Heads fit only compatible handles: most heads fit across one brand's modern range, but some lines, such as Oral-B iO, use their own heads. Check compatibility and price before you buy the handle.
The handle is a one-time purchase. The heads are a subscription whether you sign up for one or not.
How often
Replace heads every three months, or sooner if the bristles splay. Many brushes have fading indicator bristles or app reminders.
Yearly cost per person
| Head price | 4 heads a year | Family of 4 |
|---|---|---|
| $5 | $20 | $80 |
| $8 | $32 | $128 |
| $12 | $48 | $192 |
Prices are examples. Multipacks and subscriptions often lower the per-head price.
Compatibility
| Brand line | Notes |
|---|---|
| Oral-B rotating (non-iO) | Most heads fit across the range |
| Oral-B iO | iO heads only |
| Philips Sonicare | Click-on heads fit most current handles; check older or entry models |
| Subscription brands | Usually proprietary heads |
Always check the maker’s compatibility list.
Choosing a head
Soft bristles are standard. Specialty heads for sensitivity, whitening or orthodontics change bristle layout but not the basics: brush gently along the gum line for two minutes.
Compare brush types in oscillating vs sonic. Browse toothbrushes.
Common questions
How often should I replace my electric toothbrush head?
Every three months, or sooner if bristles are frayed or after an illness, according to the ADA.
Do Oral-B heads fit all Oral-B brushes?
Most fit the rotating range, but Oral-B iO handles use iO-specific heads.
Are third-party replacement heads OK?
Some work well, but quality varies and they usually lack the ADA Seal. Check bristle quality and fit.
Do subscriptions save money on brush heads?
Sometimes. Compare the per-head price and shipping with retail multipacks.