To summarise, the Ultimate Clean and Gentle Care heads are essentially the iO equivalents to the CrossAction and Sensitive Clean that are our recommended choices. In the centre of the brush head, are a further 7 tufts, 6 of which are grouped around a single tuft right in the centre. Capable of removing up to 5x more plaque than a manual toothbrush the precision clean head leaves your whole mouth feeling cleaner thanks to an arc trim that cups each tooth as you brush it.

Seeing as the small round heads are clinically better and more popular, I will presume you want the small round brush head. Offering a specially designed, dentist inspired polishing cup this brush head is for a tooth by tooth clean that works to remove surface stains to whiten teeth while the bristles clean away plaque. It is possible to share a toothbrush handle with another user, providing each user has their own brush head. With very few exceptions, all the different Oral-B brush heads work with the different Oral-B brush handles.Above and below this are 2 light blue bristle clusters with a further 2 clusters above them. The outer bristle formation is slightly thinner, but wider in formation and are positioned to form a slight arc or curvature to the edge of the brush head. The very outer bristles are the tallest on the head. To the outer left and right of this polishing cup are 3 clusters of bristles that form the outer ring of the brush head if you like. These are rich blue colour and are the shortest bristles on the head. Whilst a regular rinse and air drying of the brush head should be enough to prevent excessive bacteria buildup, this is another approach to help prevent bacteria developing on the brush head. Different users

A new design is somewhat frustrating for existing Oral-B electric toothbrush users, but there are some benefits too. Many are focused on getting a ‘whitening’ effect on their teeth, therefore opt for 3D White. But, in reality, this can be achieved with the CrossAction and other brush heads. I’ve buying links to the various brush heads so that you can be sure you’re choosing the right one. Comparison Table The brush heads shown in the table below will work with any Oral-B brush handle, apart from the Stages Power Kids and the Oral-B iO series.Oral-B's improved 3D White replacement brush heads are equipped with the latest CleanMaximiser bristle technology to signal when it's time to change brush heads-so your brush head is always fresh and never frayed for an optimal clean. Whilst it happily cleans the teeth well, for me the clean is not as invigorating as the CrossAction or the Precision clean brush heads. Dentists recommend replacing your brush head every three months. Oral-B's improved 3D White replacement brush heads are equipped with CleanMaximiser bristle technology which turns green bristles yellow to help remind you when to replace it to maintain a superior clean.* However, for those looking to achieve specific results or have special brushing requirements, Oral-B does offer a little more choice.

These ‘Tuft-in-Tuft’ structures are found on the outer edge of the brush head, there are 6 in total.

What happens is that over a period of approximately 3 months, the green bristles are dyed yellow to indicate the brush head requires changing. Oral-B have introduced a range of brush head styles with what they refer to as ‘cleanmaximiser bristles’.