what is a white tongue
White tongue is the result of an overgrowth and swelling of the fingerlike projections (papillae) on the surface of your tongue.The appearance of a white coating is caused by debris, bacteria and dead cells getting lodged between the enlarged and sometimes inflamed papillae.hite tongue is the result of an overgrowth and swelling of the fingerlike projections (papillae) on the surface of your tongue.