The Dental cosmos . plaster model. Should any discrepancy occur, it will be fatal to thesuccess of the appliance. In all cases where there are teeth whichoccluded with those of the opposite jaw (previous to the fracture) amistake is impossible, if care be exercised. Fig. 5 shows the plaster fragments placed in their normal positionand cemented together, ready for the articulator. Fig. In fractures where the teeth are missing, take an impression of thealveolar ridge in the same manner as for artificial teeth, and there willbe no difficulty in correcting the model. The splint should be molde
The Dental cosmos . plaster model. Should any discrepancy occur, it will be fatal to thesuccess of the appliance. In all cases where there are teeth whichoccluded with those of the opposite jaw (previous to the fracture) amistake is impossible, if care be exercised. Fig. 5 shows the plaster fragments placed in their normal positionand cemented together, ready for the articulator. Fig. In fractures where the teeth are missing, take an impression of thealveolar ridge in the same manner as for artificial teeth, and there willbe no difficulty in correcting the model. The splint should be moldedwith wax on the reconstructed plaster cast, and must embrace eachfragment of the jaw. If to be used for mastication, the splint shouldcover all the teeth. After modeling the splint in wax, and just before removing thecast for flasking, soften the wax with dry heat. (The grinding-surface 6o8 THE DENTAL COSMOS. of the teeth should have been previously oiled to prevent their ad-hering. ) Then close the articulator, forcing the grinding-surface ofthe upper teeth into the wax, thus giving a uniform packing the rubber, cover the teeth and model with two orthree thicknesses of tin foil. There are two reasons for doing this :first, it makes the splint a trifle larger ; second, it gives a clean sur-face. After vulcanizing, immerse the splint in diluted muriatic aci
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdentist, bookyear1890
