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.
Toothache, connected with open carious teeth, may often be relieved by the local use of carbonate of soda (1/2 dr. in the ounce of warm water); it probably acts by neutralizing acid or irritant secretions (Duckworth: Practitioner, 1875).
 
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