Gene, I agree with the info your wife found on the internet: dilation is a temporary procedure, most likely the stricture will come back. Unfortunatelly, I have experienced that three or four times....
I had a prostatectomy in 1999. Nerves were saved and retained continence. In Jan 2003 had surgery to enlarge bladder neck opening and to clear a stricture in the urethra. Fully continent after this...