ANIMAL DE/NTISTRY. 



179 



are occasionally determined by monstrosity of the crown. 

 The crown will be found expanded in all directions, often 

 extending well toward the median line of the palate. They 

 may weigh upward to five or six pounds. 



Treatment: — The odontoma causing no inconvenience is 

 left undisturbed. When ablation becomes necessary through 

 decay of the tooth or infection of the surrounding perios- 



FiG. 126. 



An Odontoma of the 2nd Inferior Molar Weighing 5 Pounds. The White 



Portion Is the Table Surface of the Original Tooth. 



teum, they are removed by first trephining and chiseling the 

 skull over the most prominent part of the tumor, and then 

 dividing it into sections until repulsion is possible. 



BRACHYGNATHISM. 



Synonyms — Parrot mouth. Receding jaw. Receding 

 chin. 



