. The principles and practice of dental surgery. Fig. 225. Fig. 224. The part embedded in each model, is a semi-circular continujition of the wire. The articulator devised by Dr. W. H. Smith, Fig. 225, will be found to be one of thebest in use. But whenplaster is abundant thereis no articulator better thanthe plaster one. It ad-mits, however, of only onemodification in case ofan inaccurate antagonism,namely, widening. A care-ful manipulator never hasoccasion to alter his ar-ticulation. If modern im-proved articulators gaveless facility for doing so,operators would, perhaps, be a little more ca
. The principles and practice of dental surgery. Fig. 225. Fig. 224. The part embedded in each model, is a semi-circular continujition of the wire. The articulator devised by Dr. W. H. Smith, Fig. 225, will be found to be one of thebest in use. But whenplaster is abundant thereis no articulator better thanthe plaster one. It ad-mits, however, of only onemodification in case ofan inaccurate antagonism,namely, widening. A care-ful manipulator never hasoccasion to alter his ar-ticulation. If modern im-proved articulators gaveless facility for doing so,operators would, perhaps, be a little more careful, in this very important step in the construction of a piece of dental CHAPTER TWELFTH. ADJUSTiMENT OF PORCELAIN TEETH TO THE PLATE-FINISHING PROCESS. Where a vacancy requiring only one or several teeth, is tobe filled, it is highly important that the artificial teeth correspondin shade and color with the natural organs; for in proportion asthey are whiter or darker, will the contrast be striking, and theirartificial character apparent. Of the two faults it is better thatthey should be a little darker than any whiter. Their outer con-figuration should resemble, too, the shape of those which havebeen lost, so far as it is possible to ascertain this. Minute accuracyas to shades of color, involves the necessity of a large assort-ment, unless one is located near a depot or agency. But thefacilities of mail and express companies will lessen this necessity,provided there is time to send for the tooth or teeth required. Itis desirable, in view of this method of matching shades of color,to keep all refuse or broken teeth, as samples in sending orders. The manufa
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