U-shaped brushes aren't a replacement for regular brushing. Your tongue still needs to be cleaned everyday, which these can't do, and they're likely missing some build-up and plaque...they can be useful tools.
I brushed my teeth and tongue with the regular brush head in the morning or before I went somewhere, and used the U-shaped head at night. My teeth felt cleaner, but not as clean as they typically do.
Collection
[
|
...
]