Dental cosmos . Fig. 4- this 202 THE DENTAL COSMOS, a place for that little to flow ; otherwise the band could not go backinto place, on account of the solder flowing inside, and we must havethe solder to flow inside in order to make a complete cone take a piece of pure gold (No. 34 American gauge) and cut justa little larger than the band, anneal it and adapt it perfectly, then placethe two in a No. 7 Melotte soldering-clamp (Fig. 5), and be surethey do not move ; place borax, mixed with water to a thin cream,all around the overlapping edge of pure gold, place a small piece oft
Dental cosmos . Fig. 4- this 202 THE DENTAL COSMOS, a place for that little to flow ; otherwise the band could not go backinto place, on account of the solder flowing inside, and we must havethe solder to flow inside in order to make a complete cone take a piece of pure gold (No. 34 American gauge) and cut justa little larger than the band, anneal it and adapt it perfectly, then placethe two in a No. 7 Melotte soldering-clamp (Fig. 5), and be surethey do not move ; place borax, mixed with water to a thin cream,all around the overlapping edge of pure gold, place a small piece oftwenty-two-carat gold solder at the junction of the band and floor,and with a broad, gentle flame solder the entire floor with the onepiece of solder and at the same moment. The clamp holds themfirmly together, and the work can be placed back on the tooth withoutrocking. (Fig. 6.) Fig. Now make the pivots (of platinum and iridium wire), and roughenthem before placing in position. Drill holes corresponding with theroot-canals, place the pivots in position, and fasten them to the floorwith prepared hard wax. Now remove carefully, and invest pivots,floor, and band in equal parts of plaster and marble-dust, and afterremoving the wax with boiling water, solder the pivots to floor withtwenty-two-carat gold. Now cut down the overlapping pure-goldfloor exactly even with the band, also cut down the projecting ends ofthe pivots. This constitutes the foundation for a solid gold make pivots for canals which cannot be thoroughly filled withcement. It is better to shorten the pivot somewhat and make itthicker, and depend for anchorage only upon the lower part of thecanal, as shown in Fig. 7. Fig. 6. Fig. 7. Fig. 8. Fig. 9. Fig. 10.
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Keywords: ., bookauthor, bookcentury1800, bookdecade1890, booksubjectdentistry
