146B AMEB.E 



200 to 400 times in alcohol and applied with a tooth brush, 

 is usually sufficient to kill recently implanted amebic infections. 

 A thorough mouth rinse with a drop or two of emetin in half a 

 glass of water is an excellent protective measure but even with 

 the use of these means of prevention some apparently cured cases 

 of pyorrhea get reinfections within a few months. 



As intimated before, the prevention of infection with End- 

 amoeba gingivalis is largely a matter of ordinary mouth hygiene. 

 Infection can be avoided to a large extent by care in eating and 

 drinking. One should never eat or drink with the same articles 

 that have been used by other people. The practice of promis- 

 cuous kissing is, of course, a ready means of transmission for 

 these parasites as for many others. 



Occasional infection with Endamceba gingivalis is, however, 

 almost inevitable. If the mouth is kept scrupulously clean and 

 in as near perfect condition as possible the ameba? may find no 

 congenial place to settle down, but in the vast majority of mouths 

 there is an abundance of fertile ground for them. 



