These brushes are the latest 'lecture' subject from my dentist, there is always something to nag me about although I haven't needed any dental treatment for many years. He recommends the Wisdom brand of brush, and I have to agree that I find them the best. Like you, Jalima, I can't get them between all my teeth, especially where I have a bridge.
I clean and re-use mine many times until they get too bendy, does anyone throw them out after each use? Seems such a waste!