I needed a new toothbrush. My gums are a bit screwed up and my wife’s cousin (who is a dentist) recommended I get one of the new Oral B “iO” models, because it would be good for the specific problem I have. But they’re expensive and so was the old Oral B I already had, so I couldn’t justify it until my existing one broke. Which it did quite suddenly, so yay! And I started researching. The only two features I wanted were the vibration action intrinsic to the “iO” line and a trave...
