Page 535 - My FlipBook

PYROZONE. 533

into large abscess pockets as an excellent cleanser and means of
cure. As a bleaching agent the 3 per cent, solution, however,
is less penetrating in its effects than either the 5 per cent, or 25
per cent, solutions ; and used as a spray it will by its oxydizing
effect bring to the surface from between the teeth any pus pres-
ent. It will also act upon any incrustations about the teeth,
softening them and rendering their removal easy.
The 5 per cent, ethereal solution is employed in abscess
pockets, fistula or sinuses, fistulous roots, alveolar pyorrhoea, small
quantities only being used at a time. The solution may be
dropped from an ordinary glass stopper, a drop at a time until the
desired effect is produced ; or it may be applied on a tapered
piece of orange wood, or an attenuated glass rod, or as an injec-
tion with a syringe, or by a special pyrozone atomizer in the form
of spray. In treating fistulas of alveolar abscesses, the solution
may be introduced on cotton or other tents, so that it may be
carried well within the tract.
The 5 per cent, solution is also an efficient bleacher of discol-
ored teeth, and causes no injurious action on the tooth structure,
or on myxomatous tissues; and its application to ulcerating sur-
faces brings about a rapid reduction of the suppuration without a
resulting coagulum.
The per cent, ethereal solution of pyrozone appears to be
5
more generally serviceable, but if the ether is permitted to evap-
orate it may become caustic, as concentration follows evapora-
tion. For bleaching discolored teeth, a pledget of cotton
saturated with the solution may be placed in the cavity, and the
surface of the crown of the tooth be wiped over with the same
per cent, solution it is also useful in removing the green stain
5 ;
common on the necks of children's teeth, but care must be taken
that the solution does not touch the gums. Great care must also
be taken not to allow the stronger pyrozone solutions to come in
contact with an exposed pulp, as it expands such a tissue very
greatly, and as a consequence causes excruciating pain.
The 25 per cent, solution of pyrozone is caustic in its action,
and its use in preference to the 5 per cent, solution will depend
upon the depth or rapidity of action required, as the 5 per cent.