US1117275A - Dental impression-tray. - Google Patents

Description

S. G. SUPPLEE.

DENTAL IMPRESSION TRAY.

APPLICATION FILED MAR. 28,1914.

Patented Nov. 17, 1914.

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SAMUEL G. SUPPLEE, OF EAST ORANGE, NEW JERSEY.

DENTAL IMPRESSION-TRAY.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Application filed March 28, 1914. Serial No. 827,803.

To all whom it may concern Be it known that I, SAMUEL G. SUPPLEE, a citizen of the United States, residing at East Orange, Essex county, State of New Jersey, have invented certain new and useful Improvements in Dental Impression Trays, of which the following 15 a full, clear, and exact description.

My invention relates to an improved tray for taking impressions for artificial teeth, whereby a new method of taking impressions may be practised.

In the accompanying drawings: Figure l is a perspective view of one form of my improved tray. Fig. 2 is a similar view showing the impression material in place, the impression being partly formed. Fig. 3 is a plan view of a part of a piece of impression material before it is applied. Fig. 4 is a plan view of the complete impression. Fig. 5 is a section on the line 55. Figs. 6 and 7 illustrate slight modifications of the tray adapted for different conditions, but embodying my improvement.

The tray construction comprises the base portion 1 having a continuous flange 2 along its inner edge. Along the outer edges are two spaced flanges 3-3.

4 is a handle portion which may be pro vided. and which is preferably formed integrally with the base 1. In this particular instance, the handle is located between the flanges 3-3 so that as plainly seen, that part of the tray adjacent the handle 4 is open for the purpose hereinafter described.

The method of taking the impression comprises, first, placing within the tray the proper amount of plastic impression mate rial 5, said material being arranged around the front of the flange 2 and between said flange 2 and the spaced flanges 3-3. In this particular case, it is assumed that there are teeth present throughout that space intervening between the spaced flanges 3-3. With the tray thus prepared, it is placed in the mouth and the teeth are closed down. The tray is then drawn forward slightly so as to force the impression material into all the spaces around the rear of and between the teeth, at the same time conforming that part of the material adjacent to the spaced flanges 3-3 to the accurate shape of the alveolar ridge and the adjacent tissues. The cheeks of the patient may be massaged properly to assist in working the impression material effectively into place so that the impression will be taken with the face in repose and the mouth closed. Thus far the impression is accurately conformed to the lingual and buccal sides of the ridge where teeth are missing and to the lingual side only of the mouth tissues and teeth, where the teeth are present. Following this, a piece of impression material 6 such as conventionally shown in Fig. 3 is applied to the buccal side of the mouth tissues and the teeth so as to fill in the space intervening between the spaced flanges 33. This part of the Work is done with the mouth closed and in repose, save as it is necessary to move the lips slightly to facilitate manipulating the impression material applied at the outer side of the teeth and the outer side of the adjacent tissues. When this work is completed the impression will appear, substantially as represented in Fig. 4, which it will of course be understood is merely a conventional showing of only one condition. As appears in Fig. 4 and in the section Fig. 5, the impression material may not only be accurately conformed to that part of the ridge and adjacent tissues where teeth are missing, but the impression material is worked well into the spaces between and around the teeth so that a very accurate reroduction of the patients local condition is secured under normal conditions, that is to say, under the conditions of repose. The open space between the spaced flanges 33 permits the tray to be manipulated in a unique manner, that is to say, it permits it to be first placed in approximate position and then drawn forward, which according to my improved method, is essential to the best results. This, of course, furnishes no impression of the buccal side of the teeth and the adjacent tissues, which impression is taken as a second step and is made possible by reason of the space furnished between the flanges 33 which space is provided for the express purpose of permitting impression material to be applied to the buccal side of said piece after the balance of the impression is completed.

In Fig. 6 I have shown a modification oi the invention in which the bottom or base of the tray between the flange 2" and the spaced flanges 3*3 is somewhat arched.

In the modification shown in Fig. 7, I have shown the flange 2 as being extended upwardly so as to permit an impression to be taken of the roof of the mouth, as is desirable in taking some upper impressions.

The tray as shown in Figs. 1 to 6 may be employed for taking either an upper or lower impression.

As is obvious, the base of the tray curves substantially to the outline or curvature of the alveolar ridge.

What I claim is:

1. An impression tray comprising a curved base portion conforming generally to the curvature of the alveolar ridge, a continuous flange around the inner edge of said tinuous flange a1 ound the inner edge of said 20 curve and spaced relatively short flanges at the outer side of said curve, and a handle portion projecting from the base of the tray between the spaced flanges.

SAMUEL G. STTPPLEE. Witnesses E. E. MORSE, IDA M. HUNZIKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

spaced relatively short flanges at 15

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