Report of Judges on Artificial Teeth. 105 



direction or angle in which tlie pin is inserted in the tooth, as by 

 this mode of insertion tlie thin portion of the tooth is not weakened 

 as is done when the headed pin is inserted in a straight line, but 

 gives the greatest amount of resistance where the greatest strain is 

 brought to bear upon the surfaces ; in biting and masticating, the 

 force exerted being outward and downward toward the neck of the 

 tooth, which the shape and direction of the pin is thus made directly 

 to oppose. (The judges have illustrated their report by diagrams 

 which cannot be here inserted.) We consider this so great an 

 improvement in the manufacture of teeth, that we recommend it for 

 special consideration, and high award. 



We have also carefully examined the dental instruments exhibited 

 by ?. S. White, and tind them of superior finish and excellent 

 temper. We would particularly mention the perfection with which 

 the burrs and serrations, on the points of the filling instruments, are 

 cut; the shapes of the various kinds of filling instruments are 

 admirable. 



In accordance with the wish expressed by the Board of Managers, 

 we were very particular in testing the temper of these instruments to 

 ascertain if this important point had been attended to with the same 

 care and skill as was evident in the other parts of their construction, 

 and we found that in this particular their manufacture had been as 

 carefully conducted as in the other parts, and that the instruments 

 had the varieties of temper best suited to the purposes for which they 

 were constructed. And we pronounce them to be the best we have 

 ever seen produced by any manufacturer of dental instruments, and 

 recommend that such evidence of excellence should be rewarded by a 

 high award. 



No. 53. Artificial Dentures. — J. Allen & Son, 22 Bond street, 

 New York. 



The peculiarities of this method of mounting teeth is great strength, 

 durability and cleanliness, and great adaptability to the varieties of 

 cases. 



The mechanical execution of the pieces on exhibition is excellent, 

 but there is nothing new in those presented at this fair. 



JOHN B. RICH, 

 S. A. MAIN, 

 E. C. EUSHMOEE, 

 Jtidges. 



