MXPA97008362A - Spherical coroning piece for print - Google Patents

Abstract

The present invention relates to a spherical crowning piece, for printing, temporary, to be used in the preparation of a false teeth, which has spherical fastening devices for attaching the false teeth to fixed parts located in the jaw, the crowning part is provided with a hole that cooperates or engages a ball or spherical part, which is located on the spherical fixing device, the crowning part is characterized in that the hole has a polygonal cross-section

Description

SPHERICAL CORONING PIECE FOR PRINTING FIELD OF THE INVENTION The present invention relates to fixing devices, spherical or ball, in particular for dentures. ostizas in which, posts or pieces of connection, which have a spherical or ball, are attached to a fixed piece that is in the bone of the jaw, and pressure holders or spherical or ball accommodations, complementary, they are mounted on the denture, and more particularly the present invention relates to a temporary crowning piece for use during the preparation of a denture, which has spherical crowning devices.

BACKGROUND OF THE INVENTION The preparation of dentures involves a series of impressions and molds, positive and negative, which are used to adapt the denture to the shape of the cavity 'REF .: 025874 oral, and to guide the fastener elements in the jaw and denture, in a correct way, some in relation to the others. During this molding-printing process, a temporary copy is placed over the spherical splice pieces in the jaw and is molded into a print, into a printing spoon. The crown pieces have a hole that is complementary to the spherical parts of the spherical fixing devices. The coronation pieces, which are now in print, are then used to hold spherical splice replicas, which are molded in a positive mold model on the jaw, in the print. The pressure clips or spherical housings are then fixed to the splice, spherical, temporary replicas and are molded in the denture or otherwise attached to it. The crown pieces usually have an inner hole of circular cross section. This means that the adjustment between the crowning piece and the spherical part has to be very exact. If the hole is too small it will be very difficult to hold pressure, the crowning piece, on the spherical part, and if the hole is too wide, there will be no friction or there will be insufficient friction to retain the splice part, spherical and the splice replica, safely. In addition, special arrangements have to be made to allow the air that is in the hole, escape, such as the formation of channels that lead to the outside, etc. In this way, it is desirable that there is a specified friction between the hole in the crowning piece and the spherical parts of the spherical fitting, respectively. This imposes a high standard with respect to the dimensional accuracy of the hole. It is also desirable that any amount of air that is present inside the crowning piece, has the possibility of escaping when the crowning piece is pushed down and on the spherical part, to allow the crowning piece to settle completely on the spherical part.

DESCRIPTION OF THE INVENTION It has now been found that the aforementioned disadvantages, which occur in known crown pieces can be overcome by the use of a spherical crowning piece for spherical printing, in which the inner hole has a polygonal cross-section. Thus, in accordance with the present invention, a spherical coronation piece for temporary printing is provided for use in the preparation of a denture having spherical fixation devices, for attaching the denture to fixed pieces found therein. in the jaw, the crowning piece is provided with a hole for coupling or cooperating with a spherical part which is on the spherical fixing device, characterized in that the hole has a polygonal cross section. This spherical coronation piece, for printing, can overcome the inherent disadvantages of the prior art, while at the same time It is simple and cheap to manufacture. The hole can be of any type or polygonal shape. However, preferably, the hole has a polygonal, regular cross section. In a further, preferred embodiment, the polygonal shape is hexagonal. The sides of the polygonal shape may be curved inwards. The sides of the polygonal cross section can also be formed of two parts having the same length and having an angle inward, relative to one another, to form the shape of a star. Preferably the mouth of the orifice is provided with a part that widens conically, so that it is coupled with a correspondingly conical part that is on the spherical fixing splice.

BRIEF DESCRIPTION OF THE DRAWINGS A preferred embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a coronation piece for printing, according to the invention, Figure 2 is a top view of the crowning piece shown in Figure 1, and Figures 3-10 illustrate the use of the spherical or ball crowning piece for pressure.

DETAILED DESCRIPTION OF A MODALITY PREFERRED OF THE INVENTION As can be seen in Figures 1 and 2, a spherical coronation piece 1 for printing, according to the invention, is provided with a spherical upper portion 2 which is used to be molded in the impression, and a cylindrical, lower portion, 3 (upper and lower refers to the orientation of the crowning piece shown in Figure 1). A central hole 4 extends from the lower end of the cylindrical part 3. The side inside the hole 4 has walls 5 which provides the cross section of the hole 4, with a hexagonal, regular shape. The outer part of the hole 4 is provided with a conically widening part, which is used to fit or fit closely, in a corresponding part 8, on a splice part 7, spherical 7 or a spherical splice replica (see Figure 3). The dimensions of the hexagon are such that they circumscribe a circle having a diameter slightly smaller than the diameter of the largest circular section of part 9, ball-shaped or spherical, of the spherical connecting piece 7 to provide an adjustment with a slight pressure, when the spherical crowning piece 1 for printing, is pressed downwards and on the spherical part of the splice part, of the spherical part. The spherical coronation piece, for printing, is made of suitable resilient or flexible plastic materials, such as polypropylene. The two parts, 6 and 8, conical, complementary, ensure that the crowning piece and spherical joint, they will be oriented, one with respect to the other, in exact and reproducible form, when the two parts are coupled. One result of the hexagonal shape of the hole in the crowning piece is that the coupling between the inside of the hole and the spherical part will only be made along the central lines of the respective inner wall of the hole, so which has certain important advantages. The friction between the two parts will be well defined and will be easy to determine in advance, defining the relative sizes of the two parts. It is also easier to achieve a predetermined minimum friction. An additional advantage of the hexagonal (polygonal) shape of the hole, is that the air contained in the orifice can easily escape by passing through the spherical or ball-shaped part through the channels formed in the corners of the hexagonal hole, allowing so that the conical parts that are on the crowning piece and on the spherical connection piece, are completely coupled other. The location of the channels reduces the risk that some impression material may penetrate the hole, damaging the desired adjustment between the crowning piece and the spherical joint piece. The use of the crowning piece is illustrated in Figures 3 through 10. Figure 3 shows how the spherical splice pieces 7 are mounted on the fixed pieces in the jaw 11 by an appropriate instrument 19. As it can be seen in Figure 4, the spherical crown pieces 1 for printing are then pressed downwards and on the spherical splice pieces 7 so that the respective conical parts 6, 8 thereof, perform a complete coupling, thus ensuring a different and defined orientation between the two parties. Then, a printing tray 12 containing printing material 13 is pressed down and onto the crowning pieces 1 for printing, and the impression material is allowed to harden, forming a negative pattern. The printing tray 12 is then removed while still containing the material 13 for printing, and, as can be seen in Figure 5, the crown pieces, for printing, are retained in the hardened impression material. Then, in the crowning pieces 1, in the material for printing, the splicing 10, splice replicas 10 (see Figure 7) are assembled. Then a positive model 14 of the jaw is molded, with the help of the negative impression model. The splice replicas 10 will be molded in this way in the positive jaw model, and will be retained therein. The regularity of the polygonal cross-section of the hole will cause the spherical or ball-shaped part of the connecting pieces 7 and of the splice replicas to center on the crowning piece. The splice replicas 10 will be oriented in the same way, in the positive jaw model, 14, as the spherical splice pieces 7, mounted on the fixed parts that are in the jaw bone 11 (see Figure 7). ). The spherical housings 16 are then mounted on the splice replicas 10, spherical, see Figure 9, and to the denture insert 15 is provided or provided with holes 17 in the locations corresponding to the spherical housings 16, see Figure 8. The holes 17 that are in the denture are then filled, at least partially, with a hardening material, and the denture 15 fits over the jaw model 14 and in the spherical housings 16. When the material in the holes 17 of the denture has hardened or hardened, the spherical housings 16 securely secure the denture 15 can be removed from splice replicas 10 and the denture is ready to be used, see Figures 10 and 10b. It is necessary, of course, that the denture is not an existing denture. The denture can also be prepared during the procedure described above, with the help of a positive model of the jaw. The invention can be varied, of course, in many forms that are within the scope of the appended claims. For example, in the preferred embodiment, above, it has been described that the cross section of the hole has a hexagonal shape. However, any polygonal, regular shape is possible, for example regular polygons that have three, four, five, seven, or eight sides. The walls of the polygons can also be curved inwards from the corners of the polygon or can even be formed by two parts oriented at a certain angle, one with respect to the other, thus providing the cross section with a star shape , for example the shape of a double hexagon. It has further been described that the crowning part has a spherical part that must be molded into the printing material. This part of the crowning piece may, however, have any shape that provides a reasonably good retention in the hardened impression material.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates. Having described the invention as above, the content of the following claims is claimed as property.

Claims (6)

1. A spherical coronation piece, for printing, temporary, for use in the preparation of a false teeth, which has spherical fixation devices, for joining the false teeth to fixed parts that are in the jaw, the crowning piece is provided with a hole that cooperates or engages a spherical or ball part, which is located on the spherical fixing device, the crowning part is characterized in that the hole has a polygonal cross-section.

2. The crowning piece, according to claim 1, characterized in that the hole has a polygonal cross section, which is regular.

3. The crowning piece according to claim 1 or 2, characterized in that the polygonal shape is hexagonal.

4. The coronation piece, in accordance with claim 1, 2 or 3, characterized in that the sides or sides of the polygonal shape are curved inwards.

5. The crowning piece according to claim 1 or 2, characterized in that the sides of the polygonal cross section are formed of two parts that have the same length and are oriented at a certain angle inwards, one relative to the other, to form the shape of a star.

6. The crowning piece according to any of the preceding claims, characterized in that the mouth of the hole is provided with a part that widens conically, so that it cooperates or functions in conjunction with a corresponding conical part that is on the splice part for spherical fixation.