Improvement in Dental Anodynes or Obtundents.
Year: 1888

page_text: Date of Application, 3rd Dec., 1888
Complete Specification Left, 3rd Sept., 1889-Accepted, 9th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvement in Dental Anodynes or Obtundents.
I, ROBERT ISAAC HUNTER, of Norfolk, Norfolk County, Virginia, United States
of America, Dentist, do hereby declare the nature of this invention to be as
follows:-
-
My Invention is an improvement in anodynes or obtundents employed for allaying
the sensitiveness of decayed teeth and thereby preventing pain during the operation
of excavating the cavities preparatory to filling.
My compound is composed of the following ingredients in the proportions
stated;
Chloral
Cocaine
Arsenic
Creosote
-
six grains
five
ten
"
"
twenty drops
Carbolic Acid
five
"
These substances are put together, and three drams of water are added, to form a
complete solution of the solid matters.
In practical use, a small pledget of raw cotton is saturated with the above solution
and inserted in the cavity to be excavated. The compound will at once act as an
obtundent or anodyne on the sensitive dentine composing the body of the tooth, and
in a short time, ranging from five to fifteen minutes, it will produce complete insensi-
bility of the nerves disbributed through the dentine so that the patient will experience
no pain during the subsequent operation of excavating the cavity by means of suitable
instruments.
It will be obvious to those acquainted with the nature of creosote that it is liable to
produce an escharotic effect when used alone in the mouth, but in the proportions in
which I use it and in combination with the other ingredients named I have found it
innocuous yet effective as an obtundent. Cocaine cannot be successfully used alone
for its effect is too brief. Chloral is a necessary adjunct for producing and main-
taining the obtundent effect the required length of time. In short, by experiment, I
have found all the ingredients named are requisite for the desired result or effect.
While I have specified the proportions of the ingredients of my compound which
I prefer and have found most advantageous yet I desire it understood that I do not
propose to confine myself strictly to such proportions since I am aware that a desirable
obtundent or anaesthetic effect may be produced by employing somewhat different
proportions.
Dated this 3rd day of December 1888.
COMPLETE SPECIFICATION.
Improvement in Dental Anodynes or Obtundents.
I, ROBERT ISAAC HUNTER of Norfolk, Norfolk County, Virginia, United States
of America, Dentist, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
My Invention is an improvement in anodynes or obtundents employed for allaying

page_text: the sensitiveness of decayed teeth and thereby preventing pain during the operation
of excavating the cavities preparatory to filling.
My compound is composed of the following ingredients in the proportions
stated;
Chloral
Cocaine
White Arsenic
Creosote
Carbolic Acid
six grains
five
ten
""
"
twenty drops
five
"
These substances are put together and three drams of water are added to form a
complete solution of the solid inatters.
In practical use, a small pledget of raw cotton is saturated with the above solution,
and inserted in the cavity to be excavated. The compound will at once act as an
obtundent or anodyne on the sensitive dentine composing the body of the tooth, and
in a short time, ranging from five to fifteen minutes, it will produce complete insensi-
bility of the nerves distributed through the dentine so that the patient will experience
no pain during the subsequent operation of excavating the cavity, by means of suitable
instruments.
It will be obvious to those acquainted with the nature of creosote that it is liable to
produce an escharotic effect when used alone in the mouth, but in the proportions
in which I use it and in combination with the other ingredients named I have found
it innocuous, yet effective, as an obtundent. Cocaine cannot he successfully used alone
for its effect is too brief. Chloral is a necessary adjunct for producing and main-
taining the obtundent effect the required length of time. In short, by experiment I
have found all the ingredients named are requisite for the desired result or effect.
While I have specified the proportions of the ingredients of my compound which I
prefer and have found most advantageous yet I desire it understood that I do not
propose to confine myself strictly to such proportions since I am aware that a
desirable obtundent or anaesthetic effect may be produced by employing somewhat
different proportions.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is ;
The improved dental obtundent or anodyne herein before described, composed of
chloral, cocaine, white arsenic, creosote, and carbolic acid, substantially as specified.
1000
ROBERT ISAAC HUNTER.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.