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152 DENTAL MEDICINE.

5j, every fifteen minutes until four doses have been taken, then
every half-hour for two hours. Sulphate of quinine gr, viij com-
bined with sulphate of morphia gr. y^ and patient placed in bed
with the head elevated. If pulse is full and throbbing, tincture
of aconite ten drops in one ounce of water, and teaspoon ful doses
given every hour until the pulse becomes normal. If the inflam-
matory symptoms are not relieved in five hours, the feet are to be
placed in hot water, and then wrapped in blankets, and x gr. of
Dover's powder in hot lemonade given until free diaphoresis
occurs. The tooth protected from irritation during treatment,
by a cap over adjoining teeth. The removal of the extremity of
the root of a tooth affected with chronic periodontitis by means
of a trepan, has also been suggested.
Jlveolar Abscess is first indicated by pain of a constant char-
acter, which is afterwards aggravated at each pulsation ; then
swelling about the roots of the affected tooth, which at length
becomes defined and prominent, and afterwards points and dis-
charges pus, when the active symptoms subside. The develop-
ment of alveolar abscess is indicated by such constitutional symp-
toms as foul tongue, offensive breath, hot skin, thirst and head-
ache, and when the suppuration is considerable, symptomatic
fever and rigors.
The characteristic pain of an alveolar abscess is deep-seated
and throbbing, and, with the swelling, denotes the formation of
pus. J chronic form of alveolar abscess is indicated by a subsi-
dence of the active symptoms, and a continuance of the discharge
of small quantities of pus through a fistulous opening opposite
the root of the affected tooth, or about its neck. An elastic
fluctuating swelling in any part of the face, or for some distance
down the neck, may result from abscessed teeth.
Treatment.—Remove all irritants. Give free vent for the
escape of the pus. Destroy sac of abscess by therapeutic treat-
ment, or by a surgical operation. Therapeutic treatment : First
cleanse the root-canal by injections of chloride of sodium on per-
oxide of hydrogen, or pyrozone, or peroxide of sodium ; escha-
rotics to destroy the sac, such as creasote, carbolic acid, salicylic
acid, nitrate of silver, iodine, dilute aromatic sulphuric acid, to