VETERINARY DENTAL SURGERT. 16? 



latter treatment is pursued that portion exfoliating 

 should not be neglected and allowed to fall down 

 and remain in the bottom of the cavity, or it will set 

 up an irritation which will produce a discharge of 

 pus through the nostrils that will remain until the 

 exfoliated portion is removed. 



Dr. C. E. Sayre, prof essor of veterinary dentistry 

 at the Chicago Veterinary College relates the follow- 

 ing cases: 



"During January, 1887, I was called to see a 

 horse, the property of Mr. M. on Twelfth street. 

 The history as given by the owner revealed the fact 

 that the animal had received a kick on the lower jaw 

 a year before, since which time there had been a 

 slight discharge continually taking place over the 

 region of the injury. 



"On examination I found a small sinus under the 

 third lower right molar which, by passing the probe, 

 proved to be very shallow, not more than a half inch 

 in depth. At the bottom of the sinus necrosed bone 

 conld be easily detected. I suspected caries of the 

 third molar, but by a careful examination of the tooth 

 could detect no trace of disease. The gums adhered 

 firmly to the tooth. I then concluded that there was 

 a small sequestrum of necrosed bone and advised 

 trephining and its removal. Dr. Drake who was 

 with me at the time coincided with my views. 



"After applying the twitch we proceeded with the 



