PURULENT COLLECTIONS IN THE FACIAL SINUSES AND DENTAL CARIES. Q 



the dressing being renewed daily for the first week, and every second 

 day for the next three weeks. At the end of this time the alveolar 

 cavity of the third molar was almost filled up. That of the fourth still 

 admitted a man's little finger. Ten days later only a narrow canal 



Fig. 2. — Shows the method of closing the communicating orifice between the 

 mouth and maxillary sinus left after punching out a molar tooth. 



existed, food no longer passed into the sinus, and the mare was able 

 to leave the hospital. Towards the end of January we were informed 

 that cure was perfect. 



At the commencement of June of the same year, one of my 

 colleagues in the Seine and IMarne district sent me a horse affected 

 with double-sided collections of pus of dental origin. On the right side 

 the condition was due to caries of the third molar, and on the left to 

 caries of the fourth. We first trephined the right side and punched 

 out the diseased molar. In five weeks, with the precautions just 

 mentioned, the alveolar cavity had filled up. We then performed the 

 same operation on the left side. The parts healed as steadily as 

 before, although the alveolus closed rather more slowly, and healing 



