. The Dental cosmos. Writers anatomic specimen jar for pre-serving syringes, dissolving-cup, pliers, andlancet. not been completely washed off ; it alsorequires a more lengthy and tediouswashing in boiling sterilized water toremove all traces of the preserving solu-tion, which, if injected hypodermicallywith the novocain-suprarenin solution,would produce most undesirably pro-longed anesthesia. The boiling water drawn up into thesyringe to rinse out the alcohol andglycerin should never be squirted backinto the sterilizer, since by doing so the 1328 THE DENTAL COSMOS. water in the sterilizer is
. The Dental cosmos. Writers anatomic specimen jar for pre-serving syringes, dissolving-cup, pliers, andlancet. not been completely washed off ; it alsorequires a more lengthy and tediouswashing in boiling sterilized water toremove all traces of the preserving solu-tion, which, if injected hypodermicallywith the novocain-suprarenin solution,would produce most undesirably pro-longed anesthesia. The boiling water drawn up into thesyringe to rinse out the alcohol andglycerin should never be squirted backinto the sterilizer, since by doing so the 1328 THE DENTAL COSMOS. water in the sterilizer is mixed withtraces of glycerin, and the interior ofthe syringe barrel really is not freedentirely from this undesirable admix-ture. Clamping of the cross-bar to the rub-ber ring fitting to the edge of the jarprevents all ingress of air, dust, andbacteria, also the sticking of the lidso often encountered if ground-glass Fig. Writers jar for preserving syringes, needlesin hubs, and lancet. covers are used, as well as evaporationof the alcohol. I have also suggested another jar, inwhich the ground cover can be easilyprized loose even in case of sticking, andwhich is more elegant than the anatomicspecimen jar. (See Fig. 4.) A platform of glass, porcelain, orenamel ware is being suggested for thereason that aluminum, or nickeled metal,soon oxidizes, especially if the stand isnot fully immersed in the alcohol. Ifa metal stand is used, the alcohol shouldbe poured away, the stand cleaned, and a new alcohol solution made as soon asthe old one appears cloudy. In order toprolong the usefulness of the solution,which gradually loses its optimum con-centration owing to its hygroscopic na-ture, it is practical, when the syringe isput away after use, to rinse it thor-oughly inside and out in boiling distilledwater, and then to evaporate the adher-ing water in dry heat, as for instanceby laying the syringe on a sterilena
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
