This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
The duration of this very painful and obstinate form of suppuration may be much shortened by iodoform ointment, of strength 1 dr. to 1 oz. (Medical Times, ii., 1872; Medical Record, 1878). I have used it frequently, with excellent results.
Gingivitis - "Tartar." - The local application of tincture of iodine will usually cure inflammation, sponginess, or tenderness of the gums, and will soften deposits of "tartar," so that they may be readily removed with the brush.