Device · Electric Toothbrushes · Oral-B
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Blue indicator bristles have faded halfway to white
Likely cause: The brush head is worn
Fix: Replace Part — Fit a new CrossAction head. · Oral-B CrossAction Replacement Brush Heads (3-Count)
Source: manufacturerWon't hold a charge
Likely cause: Charging on a metal surface, a dead outlet, or not charging for the full time
Fix: Check or Adjust — Charge off metal surfaces, check the outlet works, and charge for the full time in the manual (the charging light can take up to 10 minutes to start flashing).
Source: manufacturerRinse the brush head and handle
every day · Easy
After each use, take the head off and rinse the head and handle shaft with tap water; wipe the handle with a damp cloth now and then; store upright to air-dry. Never boil or microwave a brush head. Source: https://oralb.com/en-us/oral-health/why-oral-b/electric-toothbrushes/how-to-clean-electric-toothbrush/
Replace the brush head
every 3 months · Easy
Every three months, when the blue indicator bristles fade halfway to white, or sooner if frayed. Source: https://oralb.com/en-us/oral-health/why-oral-b/electric-toothbrushes/how-to-clean-electric-toothbrush/
Oral-B CrossAction Replacement Brush Heads (3-Count)
Device · Electric Toothbrushes
Philips Sonicare 4100HX3681
Device · Electric Toothbrushes
Oral-B All Oral-B rechargeable handles (except iO)