VETERINAR Y DENTAL SURGER Y. 



227 



decay and forming the cavity, and finally those for 



introducing, consolidating and finishing the filling. 



EXPLORING INSTRUMENTS. 



For this purpose we use 

 the small excavators used in 

 human dental surgery. 

 There are an endless variety 

 of forms manufactured for 

 this purpose. 



CHISELS. 



These are strong cutting 

 instruments used in open, 

 ing cavities and cutting off 

 projections of dentine and 

 enamel and cutting down 

 the sides of the cavity, 



Fig. 55- 



Of these the dental sur- 

 geon should have a large 

 variety of sizes and shapes, 

 as it is with them that almost 

 the entire cavity is formed. 



The dental engine has 

 almost wholly superseded 

 the use of hand drills in 



FIG. 55. Chisels. 



human practice, and the veterinary dentist is even 

 more dependent upon it, as it is impossible to use 

 hand drills in cavities in some of the molars, because 



