A new study recently published showed that gene transfer to human salivary glands was successful.

This research is promising for those who have chronic dry mouth, specifically for those who had received radiation treatment for head and neck cancers.  The gene used was aquaporin, a gene that creates water channels to help move fluid into the mouth.  Those who were treated with this therapy had better fluidity within 2 months of treatment. This therapy could radically change how we currently treat dry mouth with various mints and rinses.