The tightening of loose teeth: some technical innovations . Fig. 8. edges. The model must be placed perpendicularly uponthe investing material, so as to insure immobility of themetal to be swaged. Finally, a wall is erected in adirection parallel to the bottom of the oral is built up a quadrangular box of moldine, inwhich only the teeth are visible. Large interdental spaces also should be filled withmoldine, in order to prevent overhanging places in thematrix from being formed (Fig. 8). MECHANICAL FIXATION 15 Now cast Melottes fusible metal into the box ofmoldine. Temper and invest
The tightening of loose teeth: some technical innovations . Fig. 8. edges. The model must be placed perpendicularly uponthe investing material, so as to insure immobility of themetal to be swaged. Finally, a wall is erected in adirection parallel to the bottom of the oral is built up a quadrangular box of moldine, inwhich only the teeth are visible. Large interdental spaces also should be filled withmoldine, in order to prevent overhanging places in thematrix from being formed (Fig. 8). MECHANICAL FIXATION 15 Now cast Melottes fusible metal into the box ofmoldine. Temper and invest the die (Fig. 9) in moi-dine up to the backs of the teeth (Fig. 10).. Fig. 9. Fig. 10. Next oil, sprinkle with French chalk, blow it away,place a ring-shaped sandpaper strip round it, andpour on more melted, but not overheated, fusible metalupon it. Thus the counter-die is obtained (Fig. 11).
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1912
