Having spent many years using the small round brush heads, the TriZone is much larger and bulkier in the mouth and is much more reminiscent to a regular manual toothbrush. Oral-B toothbrushes are designed with dentists and are the number one toothbrush brand most used by dentists worldwide. The small round brush head has contouring to the bristles to help adapt to the curvature of the tooth and gumline for a deep and thorough clean.

Thanks for your question. In short, the answer is no. You can still clean your teeth fairly effectively with the 3D white head.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.

Specific to the iO range of heads, the Specialised/Targeted Clean head can be used daily but is not designed for an all over clean of the teeth. It is specifically designed to be used in addition to the likes of the Ultimate Clean or Gentle Care head to reach more awkward locations that a normal head just won’t reach. Out from the white bristles are 2 clusters of very dark blue coloured bristles. The formation of these bristles are wider and slightly thinner than a normal cluster and are positioned in such a way that there is a gentle arc to them.The brush head is small and round with tufts angled at 16 degrees to be most effective in the clean, but to also sweep away plaque from the gumline.

You will find that the brush heads will normally last 3 months and whilst the intensity of the bristle colour may have changed the bristle formation should still be virtually the same as it was when new at the end of the 3 month period. Whilst it happily cleans the teeth well, for me the clean is not as invigorating as the CrossAction or the Precision clean brush heads.

Sensitive Clean: for a gentle clean, comes with ultra-thin bristles that are tough on plaque but gentle on gums 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. You might want to get just 1 brush handle and then let them share it. Of course they need their own head. Just be mindful if they are ever apart this is when you might need a 2nd handle or solution.

Or, would you like the sweeping action of the TriZone brush head which is more aligned with a manual toothbrush? Do you want the small round brush head, which Oral-B are famed for, and that is clinically proven to offer a superior clean?This was the brush head of choice and the default brush head supplied with most brushes from Oral-B, before they introduced the CrossAction brush head.