Should reinforce the tip of the bristles so they don't spread out as easily. That would make them last longer.
love this brush. only thing more i could ask is that it were also available in medium stiffness instead of only soft.
My dentist gave me a sample of this brush because at 60 I had to get braces. No other brush gets past these (I hate 'em) to the teeth, even the expensive electric types. Once again I can say my teeth are clean and my mouth is fresh.
I use sulcus and impact brushes to try to stem the periodontal disease I have. I want to keep the teeth I have left.
For those of us who have partial denatl plates, this is the only tooth brush product that gets between the teeth an really cleans.