Not exactly cured, but I believe every stutter can reach a good level of fluency if it really puts a lot of work on it. I have been a stutter since I remember, couldn't even say my name or ask the bus driver to make a stop so I can get off (in Mexico you just yell "Bajan", the bus buttons rarely work). Nowadays I can say I have a 90% fluency level, only stuttering on stressful situations. Almost every new person I know doesn't realize I'm a stutter, or they don't believe that I have such a condition. So, in my personal opinion, I can be considered cured from stuttering. Unfortunately, that didn't change much my overall happiness. When I was still a child I thought being cured from stuttering was going to be the end of my problems, boy I was wrong. Stuttering left me with the scar of anxiety and some other bad habits that I'm still working on.