i asked that friend again. she doesn't have all of her teeth root canaled yet.. I beg her not to continue doing this and buy the book 'tooth truth' before deciding what to do with her remained teeth. I think she has about 6 or 7 root canals (but her dentist wants to do all root canals, I thought it was done already) some of her root canals are new, and her bladder control problem happened right after the new root canals. I hope she woke up already..