. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . , the final 144 FILLING MATERIALS condensation being accomplished by means of mallet to the strength of the thrust required for working tinand gold by the non-cohesive method, larger handles than m lllll iiiiif M ,.i: Fig. i8o.—Plugger handles. those usually employed are necessary (Fig. i8o). Two methods are employed, depending on the size of thecavity and the individual preference of the operator. METHODS OF WORKING TIN. 145 1. The Cylinder or Cushion Method. 2. The Ribbon, R
. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . , the final 144 FILLING MATERIALS condensation being accomplished by means of mallet to the strength of the thrust required for working tinand gold by the non-cohesive method, larger handles than m lllll iiiiif M ,.i: Fig. i8o.—Plugger handles. those usually employed are necessary (Fig. i8o). Two methods are employed, depending on the size of thecavity and the individual preference of the operator. METHODS OF WORKING TIN. 145 1. The Cylinder or Cushion Method. 2. The Ribbon, Roll, or Rope Method. I. The Cylinder Method.—The cylinder method is themore rapid when the size of the cavity will admit of its adop-tion. The cylinders should be of such length that one end willprotrude above the orifice of the cavity, while the other restson the floor or seat. (Fig. i8i). (i) Place enough cylinders against the wall farthest awayfrom the operator to cover the wall. Condense thoroughlyagainst the wall with the plugger. (2) In large cavities place another layer of cylinders against. Fig. 181.—Working gold or tin cylinders (nou-cohesive). the first layer, and condense in the same direction, holding inposition with a plugger in the left hand. (3) Repeat the procedure on the opposite wall, and thenon the two intervening walls, leaving the center of the cavityunfilled. (4) Force one or more cylinders into the central opening,the number depending on its size, ramming them in until thecavity is full. (s) Force an opening, by means of the wedge-shapedpluggers, into another part of the filling, and pack in one ormore smaller cylinders here, repeating this process at other 146 FILLING MATERIALS points until it is impossible, by great force, to insert anymore cylinders. (6) Thoroughly condense with foot pluggers by meansof mallet force and then burnish. (7) Trim to shape, grind to shape, or file to shape andburnish again, continuing until the filling is of proper fu
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidoperativedentala00mcge
