question: I am worried because I am not sure where “Many almost white and very soft acid particles in the mouth” is coming from? My concern is different diagnosis: salivary gland infection surgery (coming from my salivary gland but no mucus) and Acid reflux (coming from my stomach with acid taste)? I have taken a large amount of acid reflux and antibiotics pills with no effect. Also, chemical analysis on this Sediment has not been done. My throat does not ache, no breath smell, do have a taste problem, was told no sphincter, lining of the esophagus or  larynx damage, no swollen tonsils, no mucus, no dry mouth, no heartburn, sediment does cause a sleep problem every 10-15 minutes without a  CPAP machine with the sleep machine once or twice a night to rinse my mouth making me think the problem is coming from my stomach?Back in November 2011 when the problem started I had post nasal drip received more antibiotics, nasal spray and so on, today: no nasal drip but still the white stuff 24-7.  Now and then, I am not sure my doctors are not looking at the small white specks problem separately?  I am 66 years old and maleRich