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.
Orthoform occurs in the form of a white, voluminous powder, odorless, and tasteless, and slightly soluble in water.
Orthoform is antiseptic, hemostatic, and a local anaesthetic. It is used as a local anaesthetic and antiseptic to relieve the pain of ulcers, burns, wounds, excoriations, etc. As it is non-toxic it may be applied to large surfaces ad libitum. In the form of ointment it is employed to the extent of 10 to 20, per cent made up with lanolin. It is also administered internally in affections of the gastric mucous membrane. Combined with hydrochloric acid - "orthoform hydrochloride " - in the form of a soluble crystalline salt, it anaesthetizes as well as the powdered orthoform, but is not applicable for subcutaneous injection.
Of Orthoform, gr. viii to xv.
Orthoform is applied to ulcers, excoriations, etc., as an antiseptic, and anaesthetic. It is also recommended for hemorrhage following the extraction of teeth; after removing the blood, the alveolar cavity is packed with the powdered orthoform to arrest the hemorrhage.
A new form of Orthoform (under the name of Orthonew) has recently been introduced, this new preparation being whiter and cheaper than the original orthoform. This new preparation is perfectly non-irritating, even when applied in its full strength, and is used in the same way as the original.