I have these stones too as well. They are produced from bacteria build up in a "tonsil crypt" (hole) which I have found in my mouth.
From time to time I pass these stones. They are called "tonsil stones" They are usually white and are small like you stated. I have made an appointment with an ENT (Ear, Nose, Throat Doctor) to find out what I need to do.
I want to have the opening for bacteria closed. I don't think it is a good thing for bacteria to be building up into a "ball" in a hole in the mouth.
Research through the internet on "tonsil stones" and "tonsil crypt".
Hope this helps!
> I have had for years stones in my salivary glands.. From time to time I pass them from under the tongue and they
> are small white and soft like cooked rice but the size of small peas. My question is: Does anyone know how and
> why they form? Also, how can I flush them from the glands.