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.
Syphilitic Inflammation of the Mucous Membrane of the Mouth is indicated by a general swelling of the gums, with everted and ulcerated margins, exposing the necks of the teeth, although not affecting, to any great degree, their stability, with a viscid discharge, mixed with blood, from about their necks; soreness rendering mastication painful; the affection slowly spreading until the bone is exposed and a portion exfoliated; greater degree of congestion; formation of mucous patches on sides of cheeks; superficial ulcers inside of cheeks and beneath the tongue; erosions of the soft palate and tonsils; fissures at corner of the mouth and eruptions on skin and scalp. 11