20 VETERINARY DENTAL SURGERT. 



pulp cavity is most active at the time the tooth is first 

 up and comes into wear. 



Teeth are either simple or compound. Simple, 

 as in the dog and cat, where the entire exposed sur- 

 face is covered by enamel ; and compound, as in the 

 horse and ox, where two or more tissues come into 

 wear. 



For description, a tooth is divided into three por- 

 tions; the crown, which is that portion above the 

 gums; the grinding surface, being called the table; 

 the cervix or neck, that part covered by the gums; 

 and the fang or root, that portion which is inserted 

 into the socket, or alveolus. 



Teeth are of three kinds: Incisors, those occupy- 

 ing the anterior portion of the jaw; Canine, those 

 occupying the interdental space; and Molars or 

 grinders, those situated in the posterior of the jaw 

 bone. In the horse there are 40 teeth ; in Ruminants 

 32 ; in dogs 42, and in pigs 44. In the horse the 

 dental formula will be: 



Incisors, | f ; Canines, \ |; Molars, | 1= 40 



In the Ruminants the dental formula will be 



Incisors, | ; Canines, {{ ; Molars, J \= 32 



In the pig the dental formula will be: 



Incisors, f |; Canines, \ \\ Molars, % ^= 44 



In the dog the dental formula will be: 



Incisors, J f; Canine, { |; Molars, . 7=42 



