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J Dent Res 22(6): 487-490, 1943
© 1943 International and American Associations for Dental Research
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SOLUTION OF DENTIN POWDER BY INORGANIC ACIDS USED IN ROOT CANALS

LOUIS I. GROSSMAN D.D.S.,1

1 Department of Oral Medicine, University of Pennsylvania, Phila., Pa.

(1) A method for determining the effectiveness of acids for dissolving dentin is described.

(2) From a clinical standpoint, 50% aqua regia in reverse proportions was more effective than any other acid examined which could safely be used in the root canal.

(3) Nitric acid was slightly more effective than hydrochloric acid.

(4) A 50% nitric-hydrochloric acid solution, or 30% nitric acid, or 20% hydrochloric acid may be used effectively for routine enlarging of root canals.

(5) Higher molar concentrations of either nitric or hydrochloric acid were more effective than lower concentrations.

(6) Sulphuric acid, phenolsulphonic acid and perchloric acid did not materially effect solution of dentin. Insoluble precipitates formed which prevented further solution of dentin.

Submitted on November 5, 1943






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