US1590363A

US1590363A - Removable dental bridge

Info

Publication number: US1590363A
Application number: US739139A
Authority: US
Inventors: Gisske Carl
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-09-22
Filing date: 1924-09-22
Publication date: 1926-06-29
Anticipated expiration: 1943-06-29

Description

June 29 A1926.

C. GISSKEA REMOVABLE DENTAL BRIDGE Filed sept. `22, 1924 Patented June 29, 1926.

UNITED STATES CARL GISSKE, OF SAN FRANCISCO, CALIFORNIA.

REMOVABLE DENTAL BRIDGE.

Application led September 22, 1924. Seriali No. 739,139.

My inventionrelates to improvements in dental bridge work whereby one or more false teeth may be removably mounted be tween two spaced teeth to occupy the space and take the place of teeth extracted from a persons mouth.

The primary object ot my invention is to provide an improved dental bridge.

Another object of my invention is to provide a bridge which may be readily inserted and removed from the mouth to facilitate the cleansing of the teeth and bridge.

A further object is to provide an improved bridge which may be applied without injury to the teeth between which it is secured.

A still further object is to provide an improved device of the character described which can be readily litted and applied to the mouth and which is retained in position without permanent connections secured to the teeth and without imparting undue pressure against the sides of the teeth.

I accomplish these and other objects by means of the device disclosed in the drawings forming a. part of the present specification wherein like characters of reference are used to designate similar parts throughout said specification and drawings and in which, ff. i

Fig. 1 is an enlarged side elevation show ing the manner in which the bridge and teeth are mounted between spaced teeth.

F ig. 2 is a similar view, the bridge being shown in section.

Fig. 3 is a tifansverse section taken upon the line 3-3 of Fig. 1.

Fig. 4 is a side elevation showing the manner in which the lower plate is applied lo span the space between the teeth.

Fig. 5 is a side elevation showing the manner in which the upper plate is applied in connection with the lower plate sections, the teeth to be carried by such upper plate being omitted.

Fig. 6 is an enlarged detail showing the manner in which an end of the upper plate engages and is retainedl by the adjacent end ot' the lower plate section. c

Fig. 7 is a broken plan view of the interlocking means.

Referring to the drawings' the numeral l is used to designate in rgeneral a portion of a persons jaw having

natural teeth

2 and 3 separated by a space resulting from the extraction of one or more intervening teeth.

In order to till the intervening space and toireplace the extracted teeth I provide a bridge consisting of a lower plate formed in two sections 4 and 6 shaped to conform to the gum between the

teeth

2 and 3 and having their opposite ends shaped to contorni to the lower portions of the adjacent teeth. One of the sections, as 4, is provided with an extension 7 having a retaining bar 8 formed thereon, said extension and bar being adapted to engage and interlock with a corresponding groove 9 and recess 10 iormed in the adjacent end of theopposite l section 6. Notches.l 11 are formedupon the inner sides of the ends of the sections adiacent the

teeth

2 and 3.

An upper plate designated in general. by the numeral l2 is shaped to lit over the under plate, the ends 13 of the plate being made of slightly increased thickness and adapted to engage the notches 11 formed in the ends of the lower plate sections.v

The upper and lower plates are both cast from gold or other suitable metal by means of molds Jformed from wax impressions taken from the mouth of ar patient in the well known manner whereby the plates may be made to contorni exactly to the gum and teeth and to each other.

The upper plate`12 is arranged to receive one'or more false teeth 14 of a size and shape adapted to replace the yextracted teeth, said teeth being set and vulcanized in the well known manner, vthe vulcanized rubber entirely covering the upper surface of the plate and being shaped and colored as closely possible to the natural size and color of the gum,

In applying' my improved dental bridge, the lower plate is placed in position between the teeth by lirst inserting the section 6 in normal position against the adj acenttooth 3 so that the shaped end of the section will fit into the curvature at the base of the tooth. The other section 4 is then inserted into position, the extension 7 first being inserted into the recess 10 and the section then pressed down from. the position shown in full lines to the normal position shown in dotted lines in Fig. 4.0i1 the drawings. A suiiicient sliding movement is ailorded the bar 8 .within the recess 10 to permit the section to. be moved downwardly past. the side ofthe tooth and then moved longitudinally to lfit under andy around the curvature of the tooth 2. The bar 8 is arranged to be moved against shouldered'lugs 16 to accurately align the sections and to limit the longitudinal movement for a purpose hereinafter more fully described. Thedownward'movement of the section is limited by an extension 17 which (fo-operates with theh shouldered. lugs 1.6.. to:

Y lower plate section as shown in full' lines andthe plate then moved downwardly to the position shown in dotted lines. The length of the upper plate is made .such that when movedtothe dotted position it will be neces sary to apply a moderate pressure to spring the end ofthe upper plate past the adjacent portion of the lower plate and into engagement with the notch l1.

In springing'the upper plate int-o position the bar 8, is moved toy its extreme position within the recess l0 against the shouldered lugs 16 so that the lower' plates will be spaced apart and firmly held in interlocled relation. At, the same time the shaped ends of the lower plate sectionY are held'against the adjacent surfaces of the

teeth

2 and 3. In this manner, both' the upper andl lower plate are held firmly' in' position between the teeth 2` and 3', thel natural vcurvature ofthe teeth beingadapted to prevent either transverse or' vertical movement of. the bridge.

The pressure applied Vagainst the sides of the teeth is regulated bythe movement 'of the bar 8 within the rec'esslO. If the movement of the bar is not limited, the full" spring pressure imparted bythe upper plate will be directed againstV lthe sides of the' teeth. In some. cases thisv arrangement is desirab'leand the retaining bar 8 may be entirely' omitted'. However, in most cases-it is desirable to limit the pressure against the tooth itself and to accomplish this the bar is arrangedto engage the lugs-16` in such a manner as to carry the greater portion of the pressure, only suficientpressure being appliedv to the tooth to hold th'ebri'dge firmly in position. If desired, the entire pressure may be directed onto the bar and no pressure at all applied to the tooth, the accurate shaping of the bridge sect-ion being sufficient to hold the bridge in position without pressure against the tooth.

When it is desired to remove the bridge for cleaning or for other purpose, one end of the upper plate is pried upwardly out of engagement'and the plates are removed by a reversal of the above described method of insertion. The several parts may thus be readily removed and' replaced with very lit tle eifort or inconvenience.

My improved bridge is of particularvalue because ofthe fact that the bridge` is applied without any injury to the teeth 2 vand 3. In common practice heretofore it has been cusrIlhis plate is inserted ieeoea tomary to grind portions of the teeth away to receive mounting elements of various kinds. In all such cases the sound tooth to which the bridge is anchored is itself wealtened and the life of the tooth is materially shortened.' By my improved arrangement this injury to the tooth is entirely avoided.

I'Vhile I have illustrated and described one particular form and construction, the device is of course subject to modification in numerous ways, particularly with respefiftto the structure ofthe interlocking means for limiting the relative movement of the lower plate sections. I therefore do not wish to restrict myself to the specific details of structure shown in the drawings but desirerto avail myself of all modifications which may fall within the scope ofthe appended claims.

' Having thus described my invention what I claimA as new and desire to secure by Letters Patent is, y Y

l. fh dental' bridge' comprising a lower plate formed in two sections adaptedV to be det-achably mounted between two teeth to span a space intervening therebetween due to' the extraction of one or more teeth; means formed upon adjacent ends of the sections for limiting relative longitudinal movement between said sections; and an upper plate adapted to be detachably engaged and retainedv by the lower plate, said'upper plate being provided with teeth secured thereon to replace the extracted teeth.

2. A dental bridge comprising a lower plate formed in two sections adapted to be detachably mounted between two teeth to span a spacev intervening therebetween due to the extraction of one or morerteeth, opposite ends of said sections being shaped toV conform to the shape ofthe adjacent teeth whereby the curvature of said teeth will retain the sections in position; and an upper plate adapted to be detachably engaged and retained between the ends of the lower plate, said upper plate being provided with teeth secured thereon to replace the extracted teeth.

3. A dental bridge comprising a lower plate formed in two sections adapted to be detachably mounted between two teeth to span a space intervening therebetween due to the extraction of one or more teeth, opposite ends of said sections being shaped to conform to the shape of the adjacent teeth `whereby the curvature of said teeth will retain the sections in position; means formed upon adjacent ends of the sections to limit relative longitudinal Y. movement between said sections; and an upper plate adapted to bel detachably engaged and retained between the ends of the lower plate, said upper lplatel being provided with teeth secured thereon to replace the extracted teeth.

4. A dental bridge comprising 4a-lower plate formed in two sections adapted tobe 1N detachably mounted between two teeth to span a space intervening therebetween due to the extraction of one or more teeth, opposite ends of said sections being shaped to contorni to the shape of the adjacent teeth whereby the curvature of the teeth will retain the sections in position; means formed upon adjacent ends of the sections to secure said sections in interlocking relation to limit relative longitudinal movement therebetween; notches formed upon the inner sides of the shaped ends of the sections;

and an upper plate adapted to be sprung into engagement with said notches to detachably secure said upper plate between the ends of the lower plate sections, said upper plate being provided with teeth secured thereon to replace the extracted teeth.

5. A dental bridge comprising a lower plate formed in two sections adapted to be detachably mounted between two teeth to span a space intervening therebetween due to the extraction of one or more teeth, op` posite ends of said sections being shaped to conform to the shape of adjacent teeth whereby the curvature of the teeth will retain the sections in position; a locking element formed upon one of the sections and adapted to interlock with a corresponding recess formed in the opposite section to normally lock the sections against relative movement; notches formed upon the inner sides of the shaped ends of the sections; and an upper plate adapted to be sprung into engagei'nent with said notches to detachably secure said upper plate between the ends or" the lower plate sections, said upper plate -being provided with teeth secured thereon to replace the extracted teeth.

6. A dental bridge comprising a lower plate formed in two interlocking sections adapted to be detachably mounted between two teeth to span a space intervening therebetween due to the extraction of one or more teeth, said sections being shaped to conform to the gum between the teeth and having opposite ends shaped to conform to the shape of the adjacent teeth .whereby the curvature of the teeth will retain the sections in position and an upper plate adapted to be sprung into engagement with the shaped ends of the lower plate sections, said upper plate being shaped to conform to the shape of the lower plate and provided with teeth vulcanized thereon to replace the extracted teeth.

In witness whereof I hereunto set my signature.

CARL GISSKE.