THE PERMANENT TEETH 



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young subject is compressed, convex and smooth laterally, concave with a median 

 ndge medially; its edge is sharp in the unworn tooth. The embedded part (usu- 

 ally called the root) is round and the pulp cavity is large, persisting to advanced 



age. In old subjects, when the compressed part of the crown has worn away, the 

 exposed part is rounded and blunt. 



Cheek Teeth (Premolars and Molars).^ — The constant number of these is 



1 It is common in veterinary works to apply the term "molar" to all the cheek teeth, since, 

 in the horse particularly, the premolars are molariform, i. e., do not differ materially fron the true 

 molars in size or form. The term cheek teeth conveniently includes the premolars and molars. 



