DISEASES OF THE TEETH. 



5G7 



The writer saw a very interesting case of this kind at the 

 Columbia Veterinary College, in which the unobstructed tooth 

 had seriously penetrated into the upper jaw. In the endeavor to 



Fio. 327. About 1 1 years of age. 



FIG. 328. Mouth of 

 the mare at 13 years. 



relieve the pressure of the parts, the animal 

 evidently masticated the food wholly upon 

 the opposite side of the mouth ; in conse- 

 quence of this the teeth on this side were so 

 worn down that both upper and lower jaw 

 were twisted around more than an inch out 

 of line. 



Sometimes caries or ulceration of a tooth 

 produces such serious disturbance that there 

 may be an enlargement of the parts, growth 

 of fungus, or necrosis of the parts. This too 

 is much more common than is suspected. 

 Prof. Cressy of Hartford called my attention 

 to a case in which a back tooth in the lower 

 of jaw became ulcerated, causing much enlarge- 

 ment of the jaw. He first removed the tooth, 

 then divided the skin at the lower edge of the jaw, and with a 

 drill made a hole through the bone. Through this hole he put a 

 seton to keep the parts open until a healthy healing process should 

 be produced. A strong preparation of carbolic acid was put upon 

 the seton and dressed once a day, which finally effected a perfect 

 cure. 



FIG. 329. Mouth 

 the mare at 13 years. 



