US1613384A - Dental molding plate - Google Patents

Description

1,613,384 Jan. 4, 1927. s. DOBRIK DENTAL MOLDING PLATE Filed June 8, 1925 2 Sheets-Sheet 1 W MM? //7 ue/yfaz' Jan. 4,1927. 1,613,384

s. DOBRIK DENTAL MOLDING PLATE Filed June 8. 1925 2 Sheets-Sheet 2 Patented Jan. 4, 1927.

TEN T SAMUEL DOBBIK, OF BROOKLYN, NEW YORK.

DENTAL .MOLDING .PLATE.

A -ppl-icatien filed June 8, 1925.

My invention relates to ,a new and .improved molding plate construction to be used for dental purposes. I

One ofthe objects of my invention is to provide a molding plate which shall be sanitary, which can'be readily adapted for the individual mouth whose teeth areto be restored and whichcan.beireadily :shaped by Such a plate may be made of any material which can be easily cut, as, forex-ample, a

waxy material.

Another object of my invention-is to devise an article of tlllSCllllTtlGtel which can be readily manipulated and to which .a metal holding handle'can be afiixed in a secure manner.

Anothenand important object of my invention is to provide a fundamental form or type of plate which can be used for taking impressionsrof the full upper jaw or of the full lower jaw, upon being suitably shaped by the dentist for the purpose for which it is intended.

Other objects of my invention will be set forth inthe following description and drawings which illustrate a preferred "embodi- V ment thereof, it being understood that the above general statement of the objects of my invention is intended to generally, illustrate the same and not to limit it in any manner.

Fig. 1 is a perspective view ofanmolding plate to be used for molding the upper jaw.

Fig. 2 is a'perspective view of the holding member to be used in combination with the plate shown inFig. 1.

Fig. 3 is an inverted .plan view showing the holding handle applied tothe molding plate and the holding member therefor.

Fig. i is the same as Fig. 1 butshowing a portion out the molding plate cut awayso as to enable the device to the used .witha relatively shallow jaw.

Fig. 5 is the same :as Fig. t but showing the central portion of the holding plate cut away so as to enable the device to be used as a molding plate for the lower jaw, this figure also showing a part of the plate cut away so as to enable the device to be used for a relatively shallow jaw.

Fig. 6 is a perspective view showing the device shown in Fig. 5 in the inverted position and with fewer of the corrugations cut away.

Fig. 7 is a perspective view of a molding Serial .No. 35,526.

plate to be used asa partial tray for the sideportion of theupper or lower .j aw.

Flg. 81s a perspective viewof aholding member to be used in combination .withthe plate. shown in Fig. 7.

Fig. 9 is a top view showing the-holding handle and holding member appliedtoithe device shown in 'Fig. 7. [the dentist to accommodate its use to the mouth of the patient who lsbeing treated.

Fig. :10 is a sectionon-the line 10.10 of Fig. 9.

Hitherto in taking impressions tor dental v purposes, for the purpose 'of making bridge workand for other dental work where-restoration of teeth is necessary, it has been customary to use .a hollow,metal molding plate in which the impression material was placed, so that aproper impression could-be taken. Plates of this kind werenot sanitary in that they were used again and againand in addition, since :the mouths of .various patients are more or iless'shallow, adental plate made of metalwas necessarily adapted for the deepest type of mouth so that it proved uncomfortable for patients having relatively shallow mouths andithis also in terfered with the accuracy of the work taken. According :to any invention, the

molding plate is made of any-material which poses for which it is used, consistent. a plate 7 having a peripheral portion 11, arentral'or palate port1on2 and :a depending wall'S having a series of corrugated portions separated by corrugation linesy. Theperipheral portion 1 is provided-with relatively ,-.raised extensions 5, 6 and 7 separated from the main peripheral portion 1 by slotsso that the corresponding tongues of the holding handle can be vinserted between the :periph eral portion 1 andthe said raised portions 5, 6 and 7.

.To enable themolding plate toihe suitably held by the dentist, a holding member '8 is provided and this holding member 8 is also provided with relatively raised side shoulders 9 and 10.

This holding member 8 is provided with depending walls 11' and 12 so that it can be fitted upon the molding plate 1.

A handle H is provided with tongues 14, 15 and 16 so that when the handle H is thrust into position as shown in Fig. 3, the tongues 14, 15 and 16 engage the molding plate 1 and the holding member 8, as shown in Fig. 3. The central tongue 16 passes underneath the central shoulder of the molding plate 1 and the end tongues 14 and 15 pass underneath the shoulders 6 and 9 on one side and the shoulders and 7 on the other side, so that a firm frictional fit is secured which could not be secured with. the sameadvantageous effect if the holding member 8 were omitted.

The molding plate shown in Fig. 1 is adapted for taking an impression of the entire upper jaw of the deepest type.

If the upper jaw of the mouth of the patient is more shallow than the deepest type before mentioned, then, more or less of the corrugations of the side walls 3 can be cut away. 'I have not illustrated indetail the appearance of the fundamental type of plate shown in Fig. 1', as the corrugated portions of the depending walls 3 are gradually cut away, because this is unnecessary for a clear understanding of my invention because it can be readily appreciated that the skilled dentist will cut away more or less of these corrugated portions, depending upon the mouth of the patient who is being treated.

In order to adapt this plate for. taking an impression of the entire lower jaw, the palate portion 2 can be cut away so as to make a device of the type shown in F 5 and 6, the type shown in Fig. 6 having less of the side walls cut away so that it is intended for a deeper type of jaw than the device shown in Fig. 5.

If it is desired to take a small impression of only a part of one of the jaws, then the device shown in Figs. 7-10 inclusive can be employed. The molding plate 17 shown in Fig. 7 has a single raised shoulder 18 and side of the shoulder 20, thus providing for a firm frictional engagement where only a single holollng tongue is used.

The purpose of usmg the holding member 7 the material of which the molding plate is made is not stiff and rigid, as if metal were used for this purpose. However, when the holding plate 8 is applied to the molding plate 1, the respective ends of the tongues 14:

and 15 are firmly forced against the upper surface of the holding plate 8 when the tongues are mserted into but ge - like extensions 6 and 7 so that a firm hold is secured.

The holding plate 19 also enables the handle H to firmly hold the small molding plate 17.

I have shown a preferred embodimentof my invention, but it is clear that numerous changes and omissions could be made without departing from its spirit.

Experience has shown that'the corrugations previously described in the said molding plates aid, a dentist materially in enabling him to secure a more accurate impression, because these corrugations enable the plate to hold the impression material in one solid mass so that the impression material does not break into parts, which fre quently occurs when the plate is not properly shaped.

I claim 1. In combination, a dental molding plate having bridge-like extensions at the front thereof and at the sides thereof, and a holding plate adapted to fit over said molding plate and having bridge-like extensions corresponding to the before mentioned extensions upon the sides of the said molding plate.

In combination with the device specified in claim 1, a handle having tongues adapted to engage the said molding plateunder the said extensions thereof, the said tongues being adapted to firmly bear against the exterior of the said holding plate.

3. A molding plate having a bridge-like extension, a holding plate adapted to fitover the said molding plate and having a second bridgedike extension corresponding to the first bridge-like extension. 7

In testimony whereof I affix my signature.

SAMUEL DO'BRIK.

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