Not sure if its a dental or medical problem.I have lost 9 pounds within the past month from not eating.  Ive had a problem since I had a tooth lengthening so a crown could be put on it. A short time later I lost my my taste and a sticky substance began forming in my mouth.  After time the taste became rancid and because of what seems to be a leakage in my mouth a sticky film is all over my upper gums , teeth and tounge.  I actually gag when I try to eat anything. My tounge is sensitive to an food that comes in contact with it.I just got checked by an ENT doctor and he said there was no sinus problem.  I also seen my gastro doctor and he cant explain the problem.What else can it be ?
Hi. Can understand your concern. Sticky substance forming in mouth can be related to salivary glands and at times the watery content of saliva may decrease leading towards Chat Doctor. . So it is better to consult an Oral Physician or an Oral Surgeon and get evaluated. A thorough examination can help in narrowing down the cause and then is an effective treatment can be done. For now, you can chew sugar-free chewing gum and suck lemon