Question

why our tongue becomes white when we brush

Answer 1

The most common cause of a white tongue is poor oral hygiene. Small bumps on the tongue called papillae can start to swell up and become inflamed in a mouth that is not cared for well. ... dry mouth caused by mouth-breathing or sleeping with the mouth open. not brushing or flossing the teeth correctly

Answer 2

our tongue becomes white because of the acids and bases which are neutralised by our saliva and various food materials also stuck on it with a thin fine layer