. Dental materia medica, therapeutics and prescription writing. Fig. 5.—Hypodermic syringe. saline* or Ilingers A 1 or 2 per cent, solution of the drugis suitable for all dental operations. There are on the market smallgraduated porcelain dishes with standard and handle, in which thesolution may be prepared and, where permissible, boiled over a Bimsenburner or alcohol Fig. 6.—Boiling cup. The injections about the teeth may be made in any of the followingways according to the requirements of the case: vSnbperiosteal, intra-osseous, peridental or submucous. The area to be injec


. Dental materia medica, therapeutics and prescription writing. Fig. 5.—Hypodermic syringe. saline* or Ilingers A 1 or 2 per cent, solution of the drugis suitable for all dental operations. There are on the market smallgraduated porcelain dishes with standard and handle, in which thesolution may be prepared and, where permissible, boiled over a Bimsenburner or alcohol Fig. 6.—Boiling cup. The injections about the teeth may be made in any of the followingways according to the requirements of the case: vSnbperiosteal, intra-osseous, peridental or submucous. The area to be injected should first bepainted with tincture of iodine diluted with an equal cjuantity of grainalcohol. Thorough asepsis should be practised throughout the operation. * Normal saline solution is known officially as Physiological Solutioti of SodiumChloride and consists of per cent, of sodium chloride in distilled water. t Ringers solution imitates closely the salinity of the blood plasma, containing,in distilled water, sodium chloride, per cent.; potassium chloride, per cent.;calcium chloride?, per cent. COCA. The leaves-of Erythroxylon Cocaand its varieties. The alkaloid Cocaine fully rep-resents the druff. Classified as :Cerebral protoplasmic poison. Physiologic actionThe drug pro-duces fiist a de-scending stimula-


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