Page 370 - My FlipBook

368 DENTAL MEDICINE.

Dental Uses.—Cantharidal collodion is a valuable application
in periodontitis, applied to the gum over the root of the affected
tooth, by means of a camel's-hair brush, previously removing all
moisture from the surface, and protecting the lips and cheeks,
until the ether it contains has evaporated, and an artificial cuticle
is formed. The blister which rises on the gum should be
punctured with a needle. The counter-irritation thus produced
relieves the periosteal inflammation.
Iodized Collodion— Collodium lodicum—(collodion, .5j. iodine,
gr. xx) forms a good solution of iodine for external use.

DENTAL FORMULi^.
For Odontalgia. For a Styptic.
CoUodii
R . Acidi carbolic! cryst., B • 3 iij
Collodii aa gj. M. Tinct. ferri perchloridi jj
SiGNA.—To be applied on cotton. Olei ricini • • • . . gtt. ij. M.
SiGNA.—To be applied to the bleeding
For a Styptic. surface, or, on cotton, to the alveolar
*^^^'^y-
R. Collodii . . . .partes 100
Acidi carbolici . partes 10 Po'' " Styptic.
Acidi tannici . . partes 5 R . Acidi tannici,
Acidi benzoici partes 5 M. Alcoholis,
.
SiGNA.—To be applied to the bleeding ^theris . . . . aa parts aeq. M.
surface by means of a camel's-hair Then add as much pyroxylin as the
brush. solution will dissolve.
Crystallin is the name of a collodion, in which methyl
alcohol takes the place of ethyl alcohol. Crystallin differs from
ordinary collodion in that it does not dry so quickly : it leaves a
thin transparent cuticle, and a pure article of methyl alcohol
should be employed in preparing it to prevent the unpleasant,
penetrating odor of impure alcohol. Philip recommends the
following formula for '•^Jiex'tble crystallin."
R . Castor oil 4 parts
Canada balsam 2 parts
Crystallin 40 parts.
Crystallin varnish, impervious to air, can be prepared as follows:
R . Crystallin 30 parts
Castor oil 4 parts
Zinc oxide 8 parts.