DISEASES OF THR TEETH. 



501 



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

 Cohiinbia Veterinary College, in which the xmobstructecl tooth 

 ha,d seriously penetrated into the upper jaw. Tn the endeavor to 



Fjg. 3*^". — Aliout 11 yi-ars of age. 



Fig. ,328.— Mouth of 

 tlu' 111 are at i:^> A'ears. 



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 

 M'orn down that ]'»oth upper and lower jaw 

 were twistoil around more than an inch out 

 of line. 



Sometimes caiies or ulceratioii of a tooth 

 produces such sei'ious disturbance that there 

 may be an enlargement of the parts, growth 

 r>f fungus, or necrosis of the parts. This too 

 is much more common than is sii.spected. 

 Prof. Cressy of Hartford called my attention 

 t(^ a case in which a back tooth in the lower 

 JRW became ulcerated, causing much enlarge- 

 ment of the jaw. He first removed the tootli, 

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

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

 seton to keep the pai'ts 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 of 

 the mare at 13 years. 



