142 



ANIMAL DENTISTRY. 



ment containing only one extractor should, therefore, con- 

 tain the closed variety instead of the open, which can only be 

 applied in the extraction of molars having full crowns. 



Fig. 96. 

 Closed Molar Extractor, with Curved Handles. 



THE OPEN MOLAR EXTRACTOR. 

 The open molar extractor answers the same general de- 

 scription as the closed, with the exception that the jaws are 

 five-eighths of an inch apart when the instrument is closed, 

 and that the forks form an abrupt drop of one inch, five 

 inches from the head. The object of the curved or drop 

 forks is to prevent the handles from striking the incisor teeth 

 before the tooth is lifted from its cavity. The closed extrac- 



FiG. 97. 

 Open Molar Extractor. 



tor may be similarly curved, but owing to the fact that when 

 they are applied to the entire crown the handles are wide 

 enough apart to pass the incisors between them, the curve 

 is not as essential as in the open ones. 



THE ANGULAR MOLAR-CUTTER. 



The angular molar-cutter is twenty inches long, and is 

 of the same size and pattern as the closed molar trimmer. 

 Its jaws extend from the head at an angle of about forty-five 

 degrees, and open in the shape of a V to fit the triangular 

 crown of the first inferior molar. 



This instrument is used solely for the purpose of beveling 



