US 1639782 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
F. H. NlEs ARTIFICIAL DENTURE Filed March 17, 1924 INVENTOR By Attorneys,
' out of the general plane.
Patented ug. 23, 19277.
UNITED STATES y 1,639,782 P,.crENfrl OFFICE.
FREDERICK HAROLD NIES, 0F BROOKLYN, NEW YORK..
Application fue@ March 17, 1924. semi No. 699,923.
Vbut each of these with which I arri' acquainted has some disadvantage which interferes with a perfect and durable union between the plate and teeth of therequired strength to withstand the strains of use. According to the present invention Iprovide a tooth having an elongated recess or deep socketat its basal end, and within this socket is arranged a tubular anchor post having at its protruding end a flange which areferably is adapted to be spaced apart from the base of the tooth. Preferably thev flange is originally formed on the post, but it is permissible to in such fashion that. the sectionsv thus formed may be turned down at anfangle ,to the post to form the flange. .In any event,l by preference the liange is slit 'so asto pro'- vide a number of may be turned down at a more acute angle with relation to the post loodyA in order that they mayiest on the end of the toothV and thus insure `that the flange of the post is sufficiently separatedfronithe end.; Other features of improvement will be hereinafter more fully described.l Referring toA the drawings which illustrate several forms of the invention:
Figure l represents alongitudinal section of a tooth showing the4 improved `post in perspective. i
Fig. 2 represents a similar section with the post in diametrical section showing the use of the bent down flanges.
Fig. 3 is a section similar to Fig. 2 illustrating the post with a solid or unsplit flange before any portion of it has been bent Fig. 4 is a top view of the preferred form of post.
Fig. 5 is a section of a modified A'form'of ost. p vReferring to the drawings, let A indicate r,and thus sections Gr suliiciently spaced from the end slit the ends of the posty necessity of sections, some of which are provided which Y rial that it can an lartificial tooth ofthe type described, that is to say, one in whichthe tooth is united toY the plate B by contact with the basal end y .C of the .toot-h. The latter is usually formed slightly concave so that the vulcanite or 'other material of which'the plate is coinposed enters the basal end of the tooth and makes a. sort of inortise connection there` with. D is the improved post provided by the present invention, which post comprises a cylinder' or tube of any desired cross section, it being preferred to make the tube in one piece by Ythe drawing process. However, the post may be rolled or may consist of two. longitudinal sections.
The basal end of the post is provided with a flange E Vwhich maybe continuous as illustrated in Fig. 3, or may bey Aslotted or slit as illustrated in Figs. 1 and 2. I prefer the latter constructionsince it permits soine of the sections F to be bent downwardly below their fellows G sothat they Contact with the basal end of the'. tooth, hold the'end of the .post withthe of the tooth to permit theflow of rubber or vulcanite beneath thesections F and Gr, par ticularly the latter. This obviatesf,` the Vaccurate .proportioning ofthe depth of the socket H withreference to the length o f the po'stQit-being only` necessary to form the socket in excess of' a given de th. i
i n' lieu of forming the head or flange ini'- `tially ontlie post, the latter may be split longitudinally and .the sections thus formed bentdownto lform the flange.
Y Ihave Vshown a construction in which the post is Yformed ofsheetmetal ,and
"has two legs J K originally lying flat with the Ahead L. These are afterwards bentl inwardly and then downwardly so as toL constitute in effectatubularl post. The lower i end of thelpost may be flared routwardly in this, or in the other constructions illus- .'trated, if desired in order to secure a better binding" effect between the tooth and post,
although this will 'not ordin'ar'ilybe necessary. y v i Preferably slots I `will be provided `at the incisal end ,ofy the post so as to better permit the flow of rubber in the socket Vof the tube and to aid in the strength ofthe union between the post land thevtooth. '.Flange E of the post is preferably v.made of vsiichinatef beV readily bent ,SQ that even in the continuous form one edge of the flange can be bent inwardly to contact with some portion of the tooth structure. It will be understood thatrtlie basalends of the teeth are customarily ground or hollowed out so that a portion of the flange willstrike the tooth wall and hold the post in it-s up ward position with a large part of the flange spaced apart from the tooth. So also it is possible to bend a portion of the flange to secure the same results. It is also possible in some cases to permit the flange tori-est on the rbase of the tooth without separation'` therefrom. It is also permissible to bend f the flange to a position more or less in parallelism with the basal endv of the tooth. These and similar structures are intendedto be covered by the appended claims.
The use of a ltubular post is very advantageous in that when the post is applied to the tooth the rubber or lcementitious material is placed in the tooth and the post pressed Vdown without forcing out any considerable amount of the material and that Whichdoes flow out being permittedto do so by the hollow'construction of the post. In the use of solid posts the post acts as a piston and squeezes down the material in the socket which opposes the proper seating of the post. On occasions also, it puts placement of individual teeth where the latter may-become damaged in use.
Vhile I have shown and described the preferred embodiment of my invention I do not wish to be limited thereto, since various changes may be made therein without departing from the spirit ofV the. invention. IVhat I claim is:
l. A post for artificial teeth,'comprising a substantially tubular member adapted to vventer a socket in the tooth, said tubular memberhaving near its outer end a transversely extending part adapted to project beyond the base of the tooth so as to permit the material of the plate to pass beneath it whereby'such part becomes embedded in the plate, andl forms an anchorage for the tooth,
a portion of suchV transversely extending means being adapted touhold the 'post with `a portion of such partV separated from the base of the tooth.
2. A' postfor artificial teeth comprising a 'substantially tubular ymember adapted"l to enter a socketvin the tooth, and having a Locaties `tooth so as to beneathsaid flange.
flange adapted to project above the basal end of the tooth for embedment in the plate, said flange being formed in a number of seictions at least oneof whichsections is adapted to be bent out of the general plane of the .flange'to support the post on the tooth: I
3. A post for artificial teeth comprising a substantially"tubular member adapted to enter a socket in the tooth, and having a Y flange adapted to project above the basal end of the tooth for embedment in the plate, said flange being formed in a number of sections at least one of which sections is adapted to be bent out of: the general plane ofthe flange 'to support the post on the tooth,"and said post having atvits inner end a communieating passage lbetween. its iiinerfand outer sides.- r
4. An artificial denture comprising one or more teeth and a platevvith an anchorage comprising a tubular post, a socket in the tooth into which said post projects, Vand a flange at the upper part ofthe post sepaj iatedat least in part from the'basal end of the tooth.
5. An artificial denture comprising one oi more teeth and a plate with an anchorage.
comprising a tubular post, a socket in the .j
tooth into which saidv post projects, a yflange at the top of the post separated from the basal end of thetooth, and said flange hav,-V
ing a plurality of sections, some of-which are bent downwardly to contact with the,
basal end of the toot 6. A post for artificial teeth comprising a member adapted to enter a socket in the tooth, said member being tubular whereby to permit flow of the material of the plate into it, and having a'flange at its top' adapted to project above the basal end of the tooth so that its underl side is separated therefrom at least in part whereby to permit passage `of the material of the plate beneath said flange, and said fiange being bendable'V so lthat a part thereof maybe bent so .asto Ycontact with the basal end 'of' the tooth yand thus maintain the post with a part/,of4 the flange above said basal end.
7. A post, for artificial teeth comprising a l substantially tubular member adapted to entera socketin the tooth and having a flange at its outer end, with means carried by the outer end of saidmember forseparating the post from the tooth, with atleast a part of said fiange'projecting beyond and spaced apart from the basal end of Ythe 8. An artificial vvdenture comprising a tooth vand a plate rwith an anclioi'agefcompermit passage of materialv prising a tubulary post and a socket in the flange at the top of the post, the flange' and tooth vbeing so constructed as to maintaina part of the flange spaced apart from the vtooth into which 4said post projects, jand basal end of the tooth, and the plate material passing around and beneath said flange.
9. A post for artificial teeth comprising a member adapted to enter a sockety in the tooth and having a flange at its outer end, with means carried by the outer end of said member for separating the post from the tooth,` With at least a part of said flange projecting beyond and spaced apart from the basal end of the tooth so as to permit passage of material beneath said flange.
l0. A post for artieial teeth comprising a member adapted to enter a socket in the tooth and having formed integrally therewith a flange at its outer end, With means carried by the outer end of said member for separating the post from the tooth, With at least a part of said flange projecting beyond and spaced apart from the basal end of the tooth so as, to permit passage of material beneath said iange.
11. A post :for artificial teeth comprising a substantially tubular member open at both ends and adapted to enter a. socket in the tooth, said member having a flange at its outer end, with means carried by the outer end of said member for separating the post from the tooth, with at least a part of said flange projecting beyond and spaced apart from the basal end of the tooth so as to per mit passage of material beneath said flange.
12. A post for artificial teeth comprising a member adapted to enter a socket in the tooth and having bendable spacing means carried by the outer end of said member adapted to longitudinally7 adjust the position of said post With respect to the tooth.
13. A postfor artificial teeth comprising a substantially tubular member adapted to enter al socket in the tooth, said tubularl member having means adapted to engage a Wall of the tooth other than the bottom ot said socket for holding the top of the post at least partially separated from the tooth and the upper part of the tubular member having transversely extending portions to form an anchorage with a plate, the construction being such that the material of the plate is permitted to flovi7 around the transversely extending portion of the post into the socket, and the post having a clear passage through it from top to bottom so that the material of the plate may flow through the top of the post into the interior of the post.
In Witness whereof, I have hereunto signed my name.
FREDERICK HAROLD NIES.