question: Hi -  i split the piece of gum between #20 and #21. i saw my prosthodontist yesterday, and he told me to use Chlorhexidine twice a day. He said not to rinse or brush afterwards (as he did in the past cause it can cause tooth discoloration. My concern is with the tooth discoloration.  Is there an alternative solution of any kind so i heal the area without using Chlorhexidine? I greatly appreciate your help and wish you a happy holiday season. Many Thanks,Priscilla