I am a dentist currently studying my masters in Jordan, and I dont have any access to any articles on the internet related to Hepatitis. My subject is about willingness of dentists to treat hepatitis positive patients. Because those patients dont have access to health care and dentists are still afraid to treat them!!
A place you might want to keep in mind is Medscape.com. I am a student in Med School and it is a life saver at times. Hope you can find what you are looking for here. Oh and registration is free.
Hi!\nHow about Crest White Strips,they are cheap and they really work,or if that doesn't help she can get a professional tooth whitening in a dental office.They usually have few treatments to choose  from.Also she has to use whitening tooth paste at home,floss and have regular dental cleanings.Another factors that could be making her teeth yellow are:smoking,drinking too much coffee or too much tea and any other drinks or foods that stain the teeth.Even the regular mouth rinses can stain your teeth!\nSo tel your friend to do something about it,there are many choices!Good luck!