Review (5/5): These are not too soft, they're just-right soft
You could clean your teeth, if you choose to, with a steel wire brush. But if you want to clean without scratching, the medium-soft bristles on these brushes are perfect. In fact, the brush itself is almost identical in every way to the G.U.M. brush given to me by a previous dentist. Since several reviewers here have objected to the softness, I did a little online research, uncovering this:
'Apply a little bit(of denture paste or cream) on a soft brush and rinse your dentures well with warm (not hot) water after brushing them. Use a soft brush. A soft toothbrush or nailbrush is ideal for cleaning dentures.'
These brushes are a great value and I really like the brushes cases that came with them.