CONFIGURATIONS FOR COPINGS AND FOR THE FIBER BAR FOR MANUFACTURING A FIXED DENTAL PROSTHESIS FRAMEWORK AND METHOD FOR OBTAINING SAID FRAMEWORK USING SAID COPINGS AND FIBER BAR

Abstract

The present invention relates to a combination of configurations for copings and for the fiber bar for manufacturing a dental prosthesis framework, and describes a method for obtaining a dental prosthesis framework using one of the described copings and the fiber bar. The configuration feature applied to the coping is that of providing at least one incorporated hook to accommodate the fiber bar, withstand the stress on the framework and contribute to the adhesiveness of the fiber bar to the coping, also aiding in maintaining the molded shape of the bar whilst it hasn't polymerized. The feature of the fiber bar is that it can be produced from a bundle of parallel fibers that are longitudinally aligned, non-fragmented and covered by a woven glass-fiber jacket, there also optionally being a seam to ensure a flattened cross section.

Claims

1. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks and method of obtaining the referred frameworks using these configurations of copings and fiber bars, refers to a set of constructive configurations of dental copings, and means of obtaining the fiber bars for the manufacture of dental prosthesis frameworks formed by referred coping, referred fiber bar and for a photopolymerizable polymeric material, being fiber bar comprised of a fiberglass impregnated with a resinous composition, and the copings can be screwed, cemented or for attachment, where in the copings provides at least one hook incorporated, with a compatible configuration to receive the fiber bar impregnated with the resin composition, and the photopolymerizable polymeric material; and the fiber bar impregnated with a photopolymerizable resin composition is obtained from a bundle of parallel fibers, not fragmented and longitudinally aligned and covered by a braided layer of glass fibers.

2. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the hook is constructed as a secondary, spare part, with a body containing a through hole, with dimensions compatible for be properly fixed to the main body of the coping, to be assembled and properly fixed to the coping later.

3. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in coping can provide two hooks, aligned in relation to each other.

4. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks according to claim 1, where in coping can provide two hooks, misaligned in relation to each other.

5. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the hook goes from the base region and protrudes up to just over half the height of the coping body approximately.

6. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the hook, or hooks, being built in a single body with the coping body.

7. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the intermediate region of the coping body providing some chamfer to facilitate the direction of the fiber bundle in the circular or arc direction.

8. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the region of the wall, front to the hook, being flat.

9. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the region of the wall, front to the hook, having a curved surface.

10. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the region frontal to the hook having recess, groove or depression.

11. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the fact that the fiber bar provides a longitudinal seam, along its central region, in order to create an oblong deformation in its cross section.

12. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the seam being performed by thread of compatible resistance.

13. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the seam being performed by metal clamps.

14. Configurations applied in copings and fiber bars for manufacturing fixed dental prosthesis frameworks, according to claim 1, where in the seam being carried out by rivets, or other compatible means.

15. Method of obtaining the referred frameworks using these configurations of copings and end fiber bar comprising: Install the implants, and install their respective prosthetic components; Copings with at least one hook incorporated must be attached to the prosthetic components; In this installation, the coping hooks must be aligned with a hook in the position where the fiber bar is desired; Once the copings are fixed with hooks, the installation of the fiber bar begins, which must be fitted in the coping hooks in such a way that it is evenly distributed along the archway that will receive the prosthesis; After fitting the fiber bar, the necessary adjustments must be made, such as checking the correct fit and supporting the fiber bar on the hooks, checking the positioning of the fiber bar according to the desired alignment; or any other adjustments that are necessary before starting the light curing; Finished attaching the bar in all copings, cover them with the fluid resin extending it over the bar; re-polymerize the applied resin; At the end, the bar should be light cured in its entirety, radiating it from all sides for at least 20 seconds each segment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0031] FIGS. 01 and 02 shows a first possible constructive form for coping, with an incorporated hook.

[0032] FIGS. 03 and 04 represent a second possible variation of coping, with an incorporated hook.

[0033] FIGS. 05 and 06 represent a third variation of coping, with an incorporated hook.

[0034] FIGS. 07 and 08 represent a fourth variation of coping, with an incorporated hook.

[0035] FIGS. 09 and 10 represent a fifth variation of coping, with two hooks incorporated.

[0036] FIGS. 11A and 11B represent a sixth variation of coping, in which the hook part is spare and mounted to the main body; the illustration shows a coping with a constructive format, but this variation can be an alternative to any of the possible constructions for coping proposed here.

[0037] FIG. 12 illustrates, in cross-section, the internal region of the coping with the hook incorporated. The illustration shows a coping with a constructive format (conical seat), but this is just an illustration for one of the possible constructive variations of the internal region, as this may have other constructive configurations, such as cylinder seat, seat with fixation system attachment type and also conical seats for cementation on trunnions, among other possible ones.

[0038] FIGS. 13A and 13B show, in a representative way, the fiber bar with round cross section, which is its original shape. Recalling that said fiber bar is comprised of a bundle of parallel fibers, not fragmented and aligned longitudinally and this being covered by a braided layer of glass fibers.

[0039] FIGS. 14A, 14B, 15A and 15B show, in a representative way, the fiber bar, with the same characteristic as the previous one, but with a flattened section, by sewing with thread (FIGS. 14A and 14B) and with fixing clips (FIGS. 15A and 15B).

[0040] FIGS. 16 and 17 show a representative image of the use of a variation of coping with the hook incorporated in a method of manufacturing fixed denture framework.

[0041] FIG. 18 shows in a representative way an image of the use of a variation of coping with two hooks incorporated in a method of fabrication of fixed dental prosthesis infrastructure.

[0042] FIG. 19 illustrates in a representative way an image to facilitate the understanding of the procedure for making the fiberglass bars available, to obtain the referred frameworks.

[0043] FIG. 20 illustrates a representative image of a fixed dental prosthesis framework obtained through the proposed method that uses coping with the hook incorporated.

DETAILED DESCRIPTION OF THE INVENTION

[0044] In reference to the figures presented, this patent document referring to the configurations applied in copings and fiber bars for the manufacture of fixed dental prosthesis framework. In relation to coping, in its broader inventive idea it comprises a body in the shape of a cone-shaped trunk, hollow, and comprising at least one hook incorporated to said body. Referred hook, it can be built in a single body with the cone trunk (figures from 01 to 10), or it can be a secondary, spare, assembled and properly fixed to the coping later (FIGS. 11A and 11B).

[0045] Said coping provides for at least one hook incorporated, however two or more hooks may be provided, aligned or misaligned in relation to each other. And, in addition to the variation related to the number of hooks and their spare construction, coping with a hook incorporated, the object of this document, can provided for numerous other construction variations, such as recesses, chamfers, among other details. The absence to illustrate all the possible constructive variations does not detract from the inventive step of the matter of this patent document.

[0046] FIGS. 01 and 02 represent a first constructive variation of the coping (100) with a hook incorporated. In this constructive configuration, referred coping (100) provides an upper portion (110), an intermediate portion (120), and the base (130); and the hook (121) that departs from the base region (130) to preferably the intermediate region (120); and in said intermediate portion (120) a chamfer (122) is provided that has the function of facilitating the direction of the fiber bundle in the circular or arc direction, as required by the shape of the prosthesis. Likewise, other forms of rounding (not shown) can do this function; and the wall (123), front of the hook (121), in this illustration, is flat.

[0047] FIGS. 03 and 04 represent a second constructive variation of the coping (200) with a hook incorporated. In this constructive configuration, said coping (200) provides an upper portion (210), an intermediate portion (220) and the base (230); and the hook (221) that departs from the base region (230) to preferably the intermediate region (220); and said intermediate portion (120) is cylindrical with the region frontal to the hook also with curved surface, being a constructive variant that helps to organize the bundle of fibers in such a way that it is available in the central alignment of the prosthesis axis, which it is interesting to maintain the lower volume of the framework (less interference in the volume of the prosthesis) and positioning for efficient mechanical function.

[0048] FIGS. 05 and 06 represent a constructive variation of the coping (300) with the hook incorporated. In this constructive configuration, said coping (300) provides an upper portion (310), an intermediate portion (320) and the base (330); and the hook (321) that departs from the base region (330) to preferably the intermediate region (320); and in said intermediate portion (320) a larger chamfer (322) is provided, which allows the bundle to bend towards the central axis of the prosthesis, ensuring better bundle organization; and the wall (323), front to the hook (321) has a flat surface, and also provides for a smaller chamfer (324) adjacent to the larger chamfer (322).

[0049] FIGS. 07 and 08 represent a constructive variation of the coping (400) with the hook incorporated. In this configuration, said coping (400) provides an upper portion (410), an intermediate portion (420) and the base (430); and the hook (421) that departs from the base region (430) to preferably the intermediate region (420); and in said intermediate portion (420) a larger chamfer (422) is provided, which allows the bundle to bend towards the central axis of the prosthesis, ensuring better bundle organization; and the region (423), front of the hook (421) has a recess shape (groove or depression); a configuration of this region (423) with recess, can be useful in the retention function of the beam bar after polymerization, it represents a mechanical restriction of retention of the bar next to the coping; and it can also provide for a smaller chamfer (424) adjacent to the larger chamfer (422).

[0050] FIGS. 09 and 10 represent a constructive variation of the coping (500) with two hooks incorporated. In this constructive configuration, said coping (500) provides an upper portion (510), an intermediate portion (520) and the base (530); and provides for two hooks (521), preferably aligned with each other; and in said intermediate portion (520), a chamfer (522) is also provided, which allows the bundle to bend towards the central axis of the prosthesis: bundle arrangement; and the wall (523), front to the handles (521), in this illustration, has a flat surface.

[0051] As already presented, FIGS. 11A and 11B represent a variation of the coping (600), in which the intermediate portion (620) containing at least one hook (621) is spare, that is, it constitutes a secondary part with a hole (624) through, which is mounted to the main body (610); said hole (624) must have compatible dimensions to be properly fixed to the main body (610). The intermediate portion may also comprise chamfer (622), as shown, as well as other constructive details (not shown) if necessary; the frontal region (623) in the illustrated case has a flat surface, however it can also present other constructive forms (circular, recess, etc.), just to confirm that this illustrated variation is an alternative and that it can present other possible constructive alternatives.

[0052] Already as shown in FIG. 12, the “A” region, internal to the coping with the hook incorporated, must provide a constructive format that allows the implant seat; in the illustrated case it consists of a conical seat, however it should be noted that this is only an illustration for one of the possible construction variations of the internal “A” region, as this may have other constructive configurations, such as cylinder seat, seat with attachment type fixation system, seats for cementation on trunnions, among other possible ones, being that such variations should not be interpreted as novelty or an inventive idea in relation to the proposed object, and not detracting from the inventive step of this document.

[0053] Regarding the fiber bar (700), they are illustrated in FIGS. 13 (A, B), 14 (A, B) and 15 (A, B). Said glass fiber bar (700), which is obtained from a bundle (702) of parallel fibers, not fragmented and longitudinally aligned and this being covered by a braided layer (701) of glass fibers. Said glass fiber bar (700) can be deformed, so that its cross section has an oblong shape, or flattened; for this a longitudinal seam (703) (or another longitudinal fixation) is necessary, along the central region of the fiber bar (700). For the realization of this longitudinal seam (703) (or fixation) on the fiber bar (700), compatible techniques and tools must be employed for such execution, depending on the chosen fixation means (by wire, by metal clamps, by rivets, or other compatible). After this longitudinal sewing step (703), the fiber bar (700) will have its section permanently flattened, giving all the advantages already mentioned to be used in obtaining the framework.

[0054] Remembering that these figures are illustrative to better understand the object proposed in this document, and to facilitate interpretation and understanding for a person skilled in the art; thus, some variations of these configurations, as well as the combination of constructive details of an illustration with details constructive elements of another illustration, or even combinations with constructive details not illustrated, should not mischaracterize the object here presented or to be understood like an improvement of these examples.

[0055] Thus, in a conceptual way, the object proposed in this document, is a coping with a hook incorporated, the fiber bar (700) with the light-curing resin in order to enable a totally innovative method of obtaining fixed prosthesis framework. It is important remembering that the hooks, incorporated to the coping, can have a different constructive format, (with recesses, spares, chamfers, with more than one hooks, as well as compatible for different types of seats, etc.), as long as it is compatible to receive the constituent element of the framework composed of bundles of resin fiber and the photopolymerizable polymeric material; preferably the hook part goes from the base region and protrudes up to half the height of the coping body approximately. This hook represents innovation in coping, as it allows positioning and organizing the fiber bar (700) close to the coping, receiving the bite pressure transmitted through the polymerized fiber bar (700) and transferring the bite pressure to prosthetic components/implants, it helps to guide the fiber bundle and all the other advantages already mentioned and explained in this document.

[0056] The method of obtaining the fixed dental prosthesis frameworks using one of the copings with configurations here presented, as well as one of the configurations of the fiber bar (700) presents, is also the matter of this patent document, since it was to enable the present method of obtaining framework that the configurations of copings and fiber bar, already described, were developed. The proposed method comprises the use of coping with specific configuration as already described and presented in this document, it also comprises the use of a fiberglass bar together with a fluid photopolymerizable resin.

[0057] One of the copings (100, 200, 300, 400, 500, or 600), as already presented, with its specific configuration and variations, already described above, consists of the element that will support the glass fiber bar (700).

[0058] The glass fiber bar (700), also object of this patent document, is comprised of a braided layer (701) of glass fibers and inside it runs a bundle (702) of parallel fibers, not fragmented and aligned longitudinally. The intact bundle (702), with parallel and aligned configuration, brings to the fiber bar (700) high flexural strength. Said fiber bar (700) can also provide seam (703), as already described.

[0059] The glass fiber bar (700) is impregnated with a photopolymerizable resin composition. While not polymerized, it is malleable and allows its shape adjustment to fit the coping hooks and acquire the shape of the prosthesis arch. This photopolymerizable resinous composition covers the entire class of Acrylic and Methacrylic monomers; preferably a composition based on urethane diacrylate (UDA), TEGDMA, and photoinitiator composition is being used; this monomer was selected because it allows rapid polymerization and provides high rigidity to the fiber bar after polymerization. Compositions containing the classic methacrylic monomers can also be used.

[0060] When irradiated with blue light from a dental curing light, the resin polymerizes and stiffens the glass fiber bar (700). When photopolymerized, the fiber bar adheres to copings, becomes highly rigid and defines the shape of the framework of the future prosthesis. By stiffening and adhering to the copings, the bar already captures the exact position of the prosthetic components/implants. To facilitate the handling of the bar while not polymerized, it can be covered with a plastic film, glass powder or other material that gives it a dry appearance.

[0061] In order to avoid disorganization of the bundles (702) inside the fiber bar (700) and also to facilitate their installation in the coping hooks, one end of the bar may have the bundles (702) and braided cover (701) attached by a ring, clamp or any device or simply have a small segment on the pre-polymerized end.

[0062] In order to increase the mechanical properties of the polymerized Fiber Bar, the braided cover (701) and bundle (702) of fibers can be treated with silanes or other coupling agents before being impregnated with the light-curing resin.

[0063] The composition of the glass fiber bundles (702) that are suitable for obtaining the bar covers the entire variety of glass fibers, such as type A, type C, type D, type E, type R, type S (S-1, S-2 and S-3) type ECR, type AR and others. Still, viable alternatives are Quartz, Carbon fibers, Aramid fibers (popularly known as Kevlar), Polypropylene fibers, polyester fibers and other examples that the high-performance mechanical fibers market can offer.

[0064] Alternatively to what is proposed for the current fiber bar (700), the fiber bundles (702) can still be braided in the form of ribbons or bars, elements already known in the technical field, however also compatible for the proposed method of obtaining. Furthermore, said fiber bar (700) can provide for other specific construction configurations, which may facilitate the proposed method of obtaining and manufacturing.

[0065] The fluid photopolymerizable resin, the third component for the method of obtaining the infrastructure described in this document, comprises a composition identical to that used to impregnate the fiber bar, plus loads to obtain greater mechanical resistance and eventually pigments. This resin assists in the process of fixing the bar on the copings and assists in camouflaging the hooks of the copings so that they do not harm the aesthetics of the prosthesis, if thinner walls in the prosthesis allow such part to appear.

[0066] Obtaining, or manufacturing, the fixed prosthesis frameworks comprise a procedure based on a standard prosthesis protocol, and FIGS. 16, 17, 18, 19 and 20 illustrate this achievement, so that: [0067] a) Once the implants are installed, their respective prosthetic components must be installed. [0068] b) On the prosthetic components, copings with hook incorporated must be fixed, the fixation can be done by screws used for molding in an open tray. [0069] c) In this installation, the coping must be aligned with the hook in the position where the fiber bar (700) is desired; FIGS. 10 and 11 illustrate, respectively, a framework obtained with coping with one hook, and with coping with two hooks, respectively. In the framework with coping with two hooks, the fiber bars are arranged, preferably in a braided form. [0070] d) Once the copings with hooks are fixed, the installation of the fiber bar (700) begins. The fiber bar must be fitted to the coping in such a way that it is evenly distributed along the arch that will receive the prosthesis. To facilitate the process of inserting the bar into the hooks, tweezers, spatulas or the instrument that is preferred by the user can be used. [0071] e) After fitting the fiber bar (700), the necessary adjustments must be made, such as checking the correct fit and supporting the fiber bar (700) on the hooks, checking the position of the fiber bar according to the desired alignment; or any other adjustments that are necessary before starting the light curing.

[0072] FIG. 19 illustrates a diagram for this procedure: with a finger or spatula, press the bar against the coping hooks to ensure its perfect fit (la), adjust the end of the bar to the ideal alignment position (2a) and start light curing by irradiating the last coping from this end for approximately 5 seconds (1b). Then radiate the end of the bar (2b), making sure that it is in the ideal alignment. In order to have the possibility of adjustments and perfect positioning of the bar, it is suggested to photopolymerize by segment between copings (3b to 5b) until the end (6b), positioning the photopolymerizer with the beam of light always facing the segment that has already received light, thus preserving the segments that have not yet been polymerized. [0073] f) After the fixing of the bar in all copings, (also known as eyelets), cover these with the fluid resin extending it over the bar; re-polymerize the applied resin. At the end, the bar should be light cured in its entirety, radiating it from all sides for at least 20 seconds each segment.

[0074] In this way, it is possible to accurately capture the position of the prosthetic components and production the rigid framework (an example in FIG. 20) that will reinforce the prosthesis very easily and quickly.