-4 SIMPLE BY
SYSTEM CLINTON
OF ORTHODONTIC
C. HOWARD,
PHOTOGRAPHY”
D.D.S., ATLANTAN
GEORGIA
EFINITE value of photographic records in the practice of orthodont ;iCS has 1ong”been recognized by the author and has been consistently E:mployed by him f’dr the past fifteen years. Every case presented for treatment, regardless of the type of malocc lusion, is recorded by photographs representing at 1,ea.d four different poses.
*Given
before
the
First
International
Congress.
685
686
Clinton
C. Howud
Our routine includes a full face, Fig. 1; a full ‘face with lips retracted, 2 ; a full side face, Fig. 3 ; and a full side fa.ce with lips retracted, Fig. 4. After years of experimentin g with various methods and equipment, it is a genuine satisfaction to announce a procedure, coupled with an inexpensive equipment, which renders a result in keeping with the detailed exactness of an orthodontic practice. Fig.
DESCRII’TJOK
OF
EQUIPMENT
AND
3IETRCPDS
Figs. 5, 6, 7, 8 and 9 are ‘(staged” illustrations. In explanation, our was placed in a professional photographic studio. This was matle neeessary on account of the small dimensions of our office photographie cquipmellt
Fig.
5.
loom. Our own photographic department, shown by Fig. 10 is used in our ordinary routine. In Fig. 5 are shown the three outstanding essentials of an orthodontic photographic equipment, namely, a standard dental chair of any desired make, an Eastman clinical camera, and the two electric lamps furnished with the camera. (The altera,tions of the outfit. will be described later.) In Fig. 6 we are attempting to illustrate the several cardinal principles of ortbodont,ic photography. First. By the use of a dental chair the subject is raised or lowered so that the middle face occupies a position on a horizontal plane with the center of the lens. This is an advantage over raising or lowering the camera. (Explained later.)
fkst adjusted to take a one-half life-size The camera, Oe,iny Second. picture (as indicated on top of carriage) is shifted to a position which causes the object to come into a, perfect focns. Nom, a iinleasuring-sticl~” is cut, its
Fig.
Fig. of teeth. photographic
7.-The method This eliminates records.
of the
obtaining focusing
6.
correct distance of camera and
from the also obtains
camera to subject for a perfect uniformity
profile of z!l
length being exactly the distance between the lens and the root of the wing of the nose. After the “measuring-stick” is once obtained, all futwe focusbag of camera is eliminated,-a. decided and obvious advantage. The shutter is set at F 77; the time at l/2 second.
688
Clinton
C. Howard
Artificial lighting is a decided advance in orthodontic photogThird. raphy. With the lamps placed at the proper distance from the subject and aided by a reflector (see Fig. &A.), the variance of daylight with the uncertain
Fig.
X.-The
Fig.
9.-This
same
as Fig. the
picture from
7 for correct
profile of face distance was
should be made lens to subject
element of time exposure plained in the legends.
The “measuring-stick“ only. just previously obtained.
immediately would have
is entirely
ALTERATIONS,
after Fig. 6, therefore the been previously determined.
eliminated. ADDITIONS,
is unnecessary
correct
as
distance
Figs. 7, 8, and 9 are exETC.
In Fig. 10 a general view of our photographic record room is pi.ctured. There are two most striking changes in the standard Eastman equipment,
First: The elimination of the camera tripod. It is noted that the camera rests on a T-shaped shelf 46 inches from the floor. This permits the easy shifting of the camera to meet the distance of the “~lleasuring-sticgr) from the face t,o the lens. Second. The two lamps are hung on brackets screwed to the wall. The lamps are 5 feet 6 inches from the floor, at an angie of 45 degrees to the right, of the patient and a,bout 36 inches from the subject’s face. It is with satisfaction that these measurements are given, as it required hours of experimentation and hnndreds of exposures in order to arrive at a proper lighting. A lead box 12” x 8” x 10” is shown on the right of Fig. 10. This contains a.11unexposed films. The protect,ion from x-rays is obvious.
Fig:
10.
Cheek retractors are made from I4 gauge base metal wire and are a”,ta.ched with cloth-covered elastic. (glass tube nearly filled with water] can be attached to the A “level" center of the “measuring-stick” as an aid in placing the patient in the exact horizontal position to the center of the lens. This, however, may be unnecessary with the experienced eye. By employing the above method it is readily recognized that practically all personal element of error is eliminated. In our practice, four pictures are made in as many minutes. Their uniformity does not vary; their cost is trivial; and, finally, the objections offered by men who procrastinate about photography are inexcusable.