Difficulty playing after brushing one's teeth

[Blue]

Not only does He Who Must Not Be Named / You Know Who likes to use lip balm when playing the flute, he also brushes his teeth before playing the flute to maintain flute cleanliness. I've tried brushing my teeth before playing, but it makes playing both the xiao and dizi much harder. Is the calcium carbonate (or glycerin or sodium lauryl sulfate) interfering here because it increases the dryness of the mouth?

I usually like to drink sugar-free green tea before playing the flute, but You Know Who feels that the tannic acid inside the tea could maker the interior of the flute a little brown . . . . . . . .

[edcat7]

Brushing one's teeth before playing any wind instrument is a good idea. Oral hygiene is almost essential with the hulusi, particles of food can build up, clogging the reed.

I used to drink hot water before playing the dizi, not for hygiene reasons, but to warm the dizi. A warm dizi to me is easier to play.