This section is from the book "Dental Medicine. A Manual Of Dental Materia Medica And Therapeutics", by Ferdinand J. S. Gorgas. Also available from Amazon: Dental Medicine.
Mercurial Poisoning, or Salivation, when of a mild form, is indicated by a red margin of the gum, which eventually becomes somewhat spongy and tender, with a slight fetor of the breath and a metallic taste.
An increased degree of salivation, or mercurial stomatitis, is indicated by a profuse flow of saliva, intense fetor, strong metallic taste, tenderness of the gums, stiffness of the jaws, followed by ulceration and sloughing, if the injudicious use of the mercury is persisted in.
Discontinue use of mercury. Chlorate of potash, internally, gr. x, in water ss: as a gargle, to water ; or iodide of potassium in doses of gr. iij, three times a day. To correct fetor of breath, permanganate of potash solution, gr. ij to x, to the ounce of water; or washes of chlorinated soda; astringent washes during convalescence. Loose teeth should not be removed, as they will again become firm.