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CHAPTER XL
ENTRANCE-PORTALS OF THE PATHOGENIC MOUTH-BACTERIA.
The diseases caused by the pathogenic bacteria of the mouth
may be considered under six heads, according to the point of
entrance of tlie infection
1. Infections caused by a breach in the continuity of the
mucous membrane, brought about b}' mechanical injuries
(wounds, extractions, etc.). These lead either to local or to gen-
eral disturbances.
2. Infections through the medium of gangrenous tooth-pulps.
These usually lead to the formation of abscesses at the point ot
infection (abscessus apicalis), but also sometimes to secondary
septicaemia and pyaemia with fatal termination.
3. Disturbances conditioned by the resorption of poisonous
waste products formed by bacteria.
4. Pulmonary diseases caused by the inspiration of particles
of slime, small pieces of tartar, etc., containing bacteria.
5. Excessive fermentative processes, and other complaints of
the digestive tract, caused by the continual swallowing ot
microbes and their poisonous products.
6. Infections of the intact soft tissue of the oral and phar^^ngeal
cavities, whose power of resistance has been impaired by debili-
tating diseases, mechanical irritations, etc.
In this connection the possibility of an infection by the accu-
mulation of the excitants of diphtheria, typhus, syphilis, etc., in
the mouth must also be taken into consideration.
1. INVASION OF PATHOGENIC MOUTH-BACTERI AIFOLLOWI NG
MECHANICAL INJURIES.
Many facts favor the supposition that a considerable number
of pathogenic micro-organisms may thrive in the juices of the
274
CHAPTER XL
ENTRANCE-PORTALS OF THE PATHOGENIC MOUTH-BACTERIA.
The diseases caused by the pathogenic bacteria of the mouth
may be considered under six heads, according to the point of
entrance of tlie infection
1. Infections caused by a breach in the continuity of the
mucous membrane, brought about b}' mechanical injuries
(wounds, extractions, etc.). These lead either to local or to gen-
eral disturbances.
2. Infections through the medium of gangrenous tooth-pulps.
These usually lead to the formation of abscesses at the point ot
infection (abscessus apicalis), but also sometimes to secondary
septicaemia and pyaemia with fatal termination.
3. Disturbances conditioned by the resorption of poisonous
waste products formed by bacteria.
4. Pulmonary diseases caused by the inspiration of particles
of slime, small pieces of tartar, etc., containing bacteria.
5. Excessive fermentative processes, and other complaints of
the digestive tract, caused by the continual swallowing ot
microbes and their poisonous products.
6. Infections of the intact soft tissue of the oral and phar^^ngeal
cavities, whose power of resistance has been impaired by debili-
tating diseases, mechanical irritations, etc.
In this connection the possibility of an infection by the accu-
mulation of the excitants of diphtheria, typhus, syphilis, etc., in
the mouth must also be taken into consideration.
1. INVASION OF PATHOGENIC MOUTH-BACTERI AIFOLLOWI NG
MECHANICAL INJURIES.
Many facts favor the supposition that a considerable number
of pathogenic micro-organisms may thrive in the juices of the
274
