The Dental cosmos . ay be used to peculiar advantage. The material is prepared by laying a sheet of No. 4, 5, or 6 non-cohesive gold foil upon a sheet of No. 4 extra tough tin foil, cuttingthem into two to four strips, and rolling each strip together to a soft Fig. 1. rope such as I have sent for your inspection (Fig. 1). These ropesmay be cut into short pieces (Fig. 2), or they may be used whole in amanner similar to soft gold ribbons. The material is inserted on ex-actly the same principle as fillings of non-cohesive gold, and anyonewho has learned to fill with the latter will have no diffic
The Dental cosmos . ay be used to peculiar advantage. The material is prepared by laying a sheet of No. 4, 5, or 6 non-cohesive gold foil upon a sheet of No. 4 extra tough tin foil, cuttingthem into two to four strips, and rolling each strip together to a soft Fig. 1. rope such as I have sent for your inspection (Fig. 1). These ropesmay be cut into short pieces (Fig. 2), or they may be used whole in amanner similar to soft gold ribbons. The material is inserted on ex-actly the same principle as fillings of non-cohesive gold, and anyonewho has learned to fill with the latter will have no difficulty whateverin filling with tin and gold combined. I shall not, however, takeup your time with a long description of the manner of inserting thematerial. The instruments are few and simple. A set which I recom-mended some years ago is to be had, I believe, of the White DentalManufacturing Co. Of this set I use chiefly Nos. 1, 2, 5, 6, and , almost any plugger may be used ; the chief requisite being Fig. that it have a square and not a round point, as a large part of thepacking is done with the side of the instrument. [Fig. 3 shows how the rope may with a four-sided plugger becarried to the bottom of the cavity, and one fold after another becondensed against the distal and then the mesial walls until all butthe center is filled as seen in Fig. 4 : the center may then be filledwith pellets. Fig. 5 illustrates the manner of packing a pellet withthe sides of the plugger against the walls of the cavity. In this waya number of pellets may be packed against the side a, and in thesame manner against the other side ; or the pellets may be placedalternately on opposite sides, as in Fig. 6, until at last there remainsbut a small hole in the center. Such centers may be filled as shown SOUTHERN DENTAL ASSOCIATION. 713 in Fig. 7. In some instances the use of a rocker (see Figs. 8 and9) will push the materials toward all the walls of the cavity, and leave Fig. 4.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdentist, bookyear1890
