Article - which goes into more detail about this - if you’re unsure which brand to go for ... at the W2 brush head, which Philips says can achieve up to a 100% whiter smile in just seven ...

Its brush head’s bristle pattern hugs tooth surfaces to deep clean nooks and crannies, plus the green bristles gradually fade to yellow, telling you it’s time for a replacement. New Waterpik ...

But with so many different replacement heads to choose ... if you’re unsure which brand to go for. Here is your definitive guide to Oral-B toothbrush heads, the differences between the designs ...