178 



ANIMAL DENTISTRY. 



is confined to the fourth, fifth and sixth superior molars, and 

 it originates in the young- animal. 



ODONTOMATA. 



Synonym: — Tooth tumors. 



Definition: — A dentinal growth of non-infiammatory 

 origin, occurring on the fangs of the teeth. 



Etiology: — The cause of these growths is obscure. The\^ 



Fig. 124. Fig. 125. 



A Large Odontoma of the 6th Su- Odontomata of the 3rd and 4th Su- 

 perior Molar. perior Molars. 



are probably the result of some perversion of their foetal 

 evolution. 



Symptoms: — The odontoma may exist unobserved until 

 attempt is made to extract the tooth to which it is attached. 

 The tooth will be easily loosened, but in spite of all efforts 

 it cannot be lifted from its cavity. There is usually a slight 

 tumefaction of the skull over its fang. In the superior ar- 

 cades and on the posterior teeth of the inferior arcades they 



