FR3031292A1 - BRIDGE FRAME AND ASSEMBLY READY TO ASSEMBLE - Google Patents

Abstract

The ready-to-assemble kit includes several parts to be assembled to quickly achieve a dental bridge reinforcement. It includes in particular: - bridge reinforcement pillars (2) may have an articulated screw tube and intended to be screwed on dental implants (5) or on their secondary pillar (9) by the lais of a piece forming interface (1); and articulated sleeves (3) intended to be mounted on the pillars (2) and / or a connecting pin (4). It allows to quickly and easily make a bridge frame.

Description

The present invention relates to the field of dental bridges. It relates to different parts allowing simple assembly to quickly realize a bridge frame. It aims in particular to: provide a reinforcement structure avoiding or limiting the risk of breakage bridges made of resin, improve their aesthetics, allow the realization of a transfer of position of implants, and - achieve a validation key.

The state of the art does not include such a set of parts: the patent application FR 3,003,461 relates only to a rigid frame which comprises at least two pillars and the patent application FR 2 988 288 relates to a bridge frame with shrouds.

Thus, the invention proposes a bridge reinforcement abutment which abutment is intended to be fixed by means of an interface part on a dental implant or on a secondary abutment fixed on the dental implant, the reinforcing abutment. bridge comprising: - a main body; a tube arranged on the main body; and - one or two articulation supports; wherein: - the main body has an end provided to fix it preferably by gluing on the interface piece; the main body and the tube have a through-hole for a screw for fixing the bridge reinforcement abutment on the implant or on the secondary abutment fixed on the implant; the articulation support or supports are each pivotally mounted around the main body independently of each other, each articulation support having a tubular portion extending transversely with respect to the through hole of the main body so as to to be able to be oriented in the direction of the crest line of the gingiva of the patient, the tubular portion being provided to be engaged with an articulated sleeve. According to preferred embodiments, the pillar comprises one or more of the following characteristics: the main body, the tube and the articulation support (s) are made in a non-removable assembly obtained by additive manufacturing; - Each hinge support is further adjustable in height relative to the main body to allow adjustment of their position on the patient's gingiva; - The tube is mounted in ball joint on the main body to be orientable relative to the main body or alternatively the tube is arranged fixed on the main body; - The tube is surrounded by a partition preferably of titanium which has recesses or retention reliefs to promote the attachment of the resin or other binder, the partition being preferably provided to be reduced in height by manual trimming; - The tube has an upper ring adapted to be reduced in height by manual trimming; the tubular part of the joint support (s) has a texture promoting the adhesion of the resin or other binder. According to another aspect, the invention proposes an articulated sleeve intended to be used with at least one bridge reinforcement pillar according to the invention, the articulated sleeve comprising two tubular parts interconnected by a ball joint enabling them to be oriented. relative to one another, at least one of the two tubular portions, preferably both, being provided to engage with the tubular portion of a hinge support of the bridge reinforcement abutment. According to preferred embodiments of the articulated sleeve, the ball is arranged on the two tubular portions so as to be off-axis with respect to the longitudinal axis of at least one of the two tubular portions and preferably with respect to the two tubular portions and the tubular parts have a textured surface promoting the attachment of the resin or other binder According to another aspect, the invention also proposes a ready-to-assemble assembly for producing a dental bridge reinforcement, the assembly ready-to-assemble mounting comprising: - at least two bridge reinforcement pillars according to the invention; and - at least one articulated sleeve according to the invention. According to preferred embodiments, the kit includes one or more of the following features: it comprises at least one interface piece for each of the bridge frame pillars which interface piece has a hole in it. passage for a fixation screw of the bridge reinforcement abutment on an implant or on the secondary abutment fixed on the implant; a first end adapted to be sealingly contacted with the dental implant or on the secondary abutment secured to the dental implant; and a second end on the opposite side to the first end, the second end being provided to be preferably bonded to the attachment end of the main body of the bridge reinforcement abutment; it comprises at least two articulated sleeves according to the invention and at least one connecting pin for making a link between the two articulated sleeves, the ends of the connecting pin being designed to be engaged in one of the tubular parts of the articulated sleeves, the connecting axis preferably having a textured surface promoting the attachment of the resin or other binder. it comprises at least one retention element support intended to be mounted either on the connection axis or on one of the tubular parts of the articulated sleeve; and at least one retention member adapted to be slidably arranged, preferably by a dovetail-shaped portion, on the retention member support, the retention member being adapted to receive and support a prosthetic tooth. It will be understood that the articulated sleeves according to the invention and the aforementioned connecting axis - possibly in combination with the retention element supports and the retention elements - can be used together with other bridge reinforcement pillars. than those of the invention since the latter comprise at least one hinge support provided to engage with a tubular portion of articulated sleeves.

Other features and advantages of the invention will appear on reading the following description of a preferred embodiment of the invention, given by way of non-limiting example and with reference to the appended drawing. FIG. 1 represents an overview of an example of a bridge frame made with a ready-to-assemble set according to one embodiment of the invention. FIG. 2 represents a sectional view of a bridge reinforcement pillar having an orientable tube and which is fixed on the secondary abutment 9 of an implant 8 inserted in the bone 10 of the gingiva, as well as an isolated view of cutting the interface piece between the bridge frame abutment and the secondary abutment of the implant. FIG. 3 represents the interface piece placed directly on an implant inserted into the bone of the gingiva according to two sizing variants with regard to the burial more or less important of the implant in the bone of the gum (10), each variant being shown in a sectional view accompanied by a view of a detail. FIG. 4 shows an articulated pillar of the bridge frame of FIG. 1, according to two perspective views and a sectional view. FIG. 5 shows different views of the articulated pillar of FIG. 4 to mount more specifically its articulation supports. FIG. 6a shows two views of an articulated sleeve (3) used in the armature of FIG FIG. 1 and a view showing such an articulated sleeve mounted between two bridge reinforcement pillars whose ends have been cut to allow this mounting. FIG. 6b shows several views of the articulated sleeve with different relative positioning of its two tubular parts FIG. 7 shows a linkable link axis used in the embodiment of the bridge armature of FIG FIG. 1 and whose function is to connect two articulated sleeves. FIG. 8 shows in each case two insulated views of two versions of a retention element support for receiving a retention element for supporting a prosthetic tooth, the first version is intended to be mounted on the tubular portion of a sleeve articulated FIG. 6a as shown in two additional views and the second version is intended to be mounted on a connecting pin of FIG. 7 as shown in another additional view.

FIG. 9 shows several views and a section of another embodiment of the bridge reinforcement pillar which has a fixed tube, another view showing a bridge frame made with such reinforcing pillars.

In the following, we will describe the embodiments described in the figures. One embodiment of the interface piece 1 is illustrated in FIG. The interface 1 is made of a metal or a metal alloy having good biocompatibility properties, and therefore preferably of titanium. It is obtained by machining. During the realization of the bridge armature, the interface 1 is glued on the bridge frame pillar 2. The interface 1 provides a seal 1-B1 between the pillar 2 and the implant 8- or the secondary pillar 9 as the case thanks to the tight tolerances and the very good surface finish that provides the machining. More particularly, the quality and roughness of the interface 1 ensures the seal 1-B1 between the interface 1 and the implant 8 or the secondary abutment 9. Moreover, the quality and roughness of the interface 1 ensures also a correct 1-Al support of the head of the screw 7 to prevent it from being unscrewed, it being specified that the screw 7 serves to fix the bridge reinforcement post 2 on the implant 8 or on the secondary pillar 9 according to the case. In the case where it is not resorted to a secondary pillar 9, that is to say that the pillar 2 of bridge frame is fixed directly on the implant 8, the interface can be declined in several versions 1-A, 1 -B of different heights Hi, H2 as shown in FIG. 3. The prosthetist then chooses the appropriate interface version according to whether the implant 8 is more or less buried in the bone 10. An embodiment of the bridge frame pillar 2 is illustrated by FIG. 2, FIG. 4 and FIG. 5. This is an articulated pillar. It is obtained by unmountable assembly of several components. Such an indémontable assembly is advantageously obtained by an additive manufacturing method. The pillar 2 comprises a main body 2A, a steerable tube 2B and one or two articulation supports 2-C1, 2-C2. When making the bridge armature, the main body 2A is glued to the interface part 1, 1-A, 1-B. The main body 2A is composed of a sphere which serves as a male part of a hinge type 2-Al ball joint with the steerable tube 2B. The main body 2-A is hollow and is provided to slide the fixing screw 7 through it.

The steerable tube 2B composes the second element of the ball joint type 2-B1. The steerable tube 2B makes it possible to choose the correct position of the passage of the hole of the head of the screw 7. The steerable tube 2B has an amplitude, denoted delta, which is preferably from +30 degrees to -30 degrees. The steerable tube 2B allows to deliver to the customer an aesthetic work. It allows the practitioner easy access to screwing in the mouth for his impression or for his validation key. The prosthetist can offer his client aesthetic work for the anterior teeth with no visible screw head entry. In addition, it is possible to provide the steerable tube as small as possible, namely a few 1/10 mm more than the diameter of the screw 7. The steerable tube 2B is surrounded by a titanium partition 2B-3 made of retentions - that is to say, hollows or reliefs - ensuring better grip of the resin or other binder. The 2-B titanium bulkhead will be completely embedded in the resin to ensure maximum strength and avoid breakage of the bridge due to fatigue exerted by the efforts in the mouth. The titanium partition 2-B can be reduced in height by a simple manual trimming by the prosthetist. The upper ring 2-B4 of the 2-B orientable tube is used to adjust the occlusion. The upper ring 2-B4 can be reduced in height by a simple manual trimming performed by the prosthetist. The hinge supports 2-C1, 2-C2 are tubular parts which rotate freely and independently of one another around the main body 2A. They may preferentially rotate completely around the main body 2A. In other words, the angles Alpha and Beta visible in FIG FIG. 5, can vary from 0 to 360 degrees.

Each articulation support is preferably movable in height - cf. Htl and Ht2 - for adjustment of their position on the gum 10. The two articulation supports (2-C1) and (2-C2) can move freely around the main body because the height of the tube of the main body (2A) is larger than the sum of the two articulation supports (2-C1) and (2-C2). The 2 articulation supports (2-C1) and (2-C2) can turn freely around the main body because there is a clearance gap between the 2 articulation supports (2-C1) and (2-C2) and the main body ( 2A).

The function of the articulation supports is to support the articulated sleeves 3, but also to position the bridge frame at the best height of the gum 10 and to align with the crest of the gingiva. The 2-D1 texture of the tubular parts of these articulation supports 2-C1, 2-C2, for example being honeycombed or having holes on their surface, promotes the adhesion of the resin to block in position the bridge frame after assembly. The length Li of the articulating supports 2-C1, 2-C2 can be reduced by cutting if the implants are close.

FIGS. 6a and FIG. 6b illustrate an embodiment of an articulated sleeve 3. With its 3-3 ball joint, its two tubular portions 3i, 3-2 can be oriented at best on the crest line of the gingiva. The amplitude of inclination of one with respect to the other is preferably from + 45 ° to -45: cf. the angle Omega in Figure E. The 3-3 ball is placed so as to offset the two tubular parts 3-1, 3-2 between them: cf. FIG. 6b. The offset D31 of the two tubular parts 3-1, 3-2 allows the articulated sleeve 3 and the rest of the bridge frame to be positioned in the best resin volume of the prosthesis. It also allows the adjustment of the tubular portions 3- 1, 3-2 of the articulated sleeve to the best height of the gum 10. The tubular portions 3-1, 3-2 preferably have the same dimensioning.

The tubular portions 3-1, 3-2 advantageously have a honeycombed texture or hole 3-4 allowing a binder to block its angular position and stabilize the entire assembly. The cut-off L31, L32 of the tubular part 3-1, 3-2 concerned makes it possible, if necessary, to bring the ball 3-3 as close as possible to the implant 8: cf. FIG. 6a. During the assembly of the bridge frame, an articulated sleeve 3 is mounted by one of its tubular parts 3-1, 3-2 on a hinge support 2-C1, 2-C2 of the pillar 2 while the Another tubular portion of the articulated sleeve 3 is mounted on a hinge support 2-C1, 2-C2 of another pillar 2 if it is sufficiently close. The insertion of the sleeves 3 on the articulation supports of the pillars 2 is slippery. If the next pillar 2 is farther apart, the other tubular portion of the articulated sleeve 3 receives a connecting pin 4, the other end of which is received by a tubular portion of another articulated sleeve 3, the other tubular portion of which is mounted on an articulation support of the next pillar 2. Preferably, an additive manufacturing method is used to produce the articulated sleeves.

The connecting pin 4 is preferably made of titanium. It serves to freeze the assembly. The assembly of the components is a sliding assembly to simplify the design of the bridge frame. This frame becomes fixed when it is coated with resin or other binder.

The link axis slides freely in the articulated sleeves 3. The link axis 4 can be reduced in length by cutting. It advantageously has a texture 4-1 which promotes the attachment of the resin to lock in position the bridge frame after assembly. Preferably, an additive manufacturing method is used to make the connecting pins 4. Moreover, the post-assembly bridge reinforcement may also support one or more retention elements intended to each receive a commercial prosthetic tooth. Thus, supra-implant bridges can be quickly made by simple assembly such as a construction set to avoid the techniques of casting and machining. For this purpose, the prosthetist places support elements 5, 5-1 - illustrated in FIG. 8 - under each prosthetic tooth. To reinforce the strength of the efforts concentrated on the bonding of the prosthetic teeth of the trade, the prosthetist can adjust the position of the retention element to place it at best. This adjustment is possible thanks to a dovetail guide 6-1 The retention element support 5, 5-1 is used for the construction of a titanium superstructure to support the retention elements 6 which will reinforce the maintenance resin teeth of the bridge. The retention support can be produced according to two variants, namely a first variant 5 having a mounting diameter R5 adapted to be positioned on the connection axis 4 and a second variant 5-1 having a mounting diameter R51 adapted to be positioned. on a tubular part 3-1, 3-2 of the articulated sleeves 3.

The holes 5-A made in the retention element supports 5, 5 1 promote the attachment of the resin to block in position of the assembly. The retention element 6 is preferably made of titanium. It is advantageously provided to be slidably mounted on a retention element support 5, 5-1 by means of a dovetail-shaped part 6-1. The retention element 6 supports and reinforces the bonding of a commercial tooth on the bridge frame. The retention elements 6 and the supports 5, 5-1 of retention elements are made by additive method.

FIGS. 9 and FIG. 10 illustrate another embodiment of the invention which is similar to the previous, except that the pillar 2 is replaced by a pillar 11. In other words, the tube 2B is fixed instead of being articulated relative to the main body 2A. In this case, the main body 2A and the tube 2B preferably constitute one and the same piece of material. The right pillars 11 offers the advantage of being less bulky. It can be used when the implants are well posed and not divergent.

In general, all the parts constituting the ready-to-assemble set can be made of metal or a metal alloy having good biocompatibility properties, so preferably titanium to avoid the galvanic effect. They can also be made with materials such as cobalt chromium or polyetheretherketone (known by the abbreviation PEEK) or other materials used in additive manufacturing.

An implementation of such a ready-to-assemble set is as follows. The dentist proceeds as follows: - he assembles the bridge frame with the different pieces previously described; - It directs the orientable tubes 2-B of the pillars 2 to facilitate the screwing; - It screws all the articulated pillars on the implants 8 or on the secondary pillars 9; - It coats the bridge frame with a binder; when the binder is solid, the dentist unscrews the coated armature of the hardened binder and gives the validation key or the transfer of position to his prosthetist. The prosthetist will be able to use the present invention to strengthen the production of resin bridges: - He completely builds the present invention; - It directs the orientable tubes (2-B) so that the screw holes are not visible when the patient smiles; It surrounds the present invention with resin to make the final bridge.

Of course, the present invention is not limited to the examples and the embodiment described and shown, but it is capable of numerous variants accessible to those skilled in the art.

Claims (15)

REVENDICATIONS1. Dental bridge frame abutment (2) which abutment is intended to be fixed by means of an interface part (1) on a dental implant (8) or on a secondary abutment (9) fixed on the dental implant the bridge frame pillar comprising: - a main body (2A); a tube (2B) arranged on the main body; and - one or two articulation supports (2-C1, 2-C2); wherein: - the main body has an end provided to fix it preferably by gluing on the interface piece; the main body and the tube have a through hole for a fixation screw (7) of the bridge reinforcement abutment on the implant or on the secondary abutment fixed on the implant; the articulation support or supports are each pivotally mounted around the main body independently of each other, each articulation support having a tubular portion extending transversely with respect to the through hole of the main body so as to to be able to be oriented in the direction of the crest line of the gingiva of the patient, the tubular portion being provided to be engaged with an articulated sleeve. 2. A pillar according to claim 1, wherein the main body, the tube and the or the hinge supports are made in a releasable assembly obtained by additive manufacturing. 3. The abutment of claim 1 or 2, wherein each articulation support (2-C1; 2-C2) is further adjustable in height relative to the main body to allow adjustment of their position on the gingiva of the patient. 4. Pillar according to any one of claims 1 to 3, wherein the tube (2B) is mounted in ball joint on the main body (2A) to be orientable relative to the main body. 303 12 92 12 5. Pillar according to any one of claims 1 to 3, wherein the tube is arranged fixed on the main body, the tube and the main body preferably constituting a single piece (11) integral. 5 6. Pillar according to any one of claims 1 to 5, wherein the tube (2B) is surrounded by a partition (2B-3) preferably made of titanium which has recesses or reliefs retention to promote the grip of the resin or other binder, the partition being preferably provided to be able to be reduced in height by manual trimming. 7. A pillar according to any one of claims 1 to 6, wherein the tube (2B) has an upper ring (2B-4) adapted to be reduced in height by manual trimming. 15 8. Pillar according to any one of claims 1 to 7, wherein the tubular portion of the support or supports (2-C1, 2-C2) has a texture promoting the adhesion of the resin or other binder. 20 Articulated sleeve (3) intended to be used with at least one bridge reinforcing pillar according to any one of claims 1 to 8, the articulated sleeve comprising two tubular parts (3-1, 3-2) connected between they by a ball (3-3) to orient them relative to each other, at least one of two tubular parts, preferably both, being provided to engage with the tubular portion of a hinge support (2-C1; 2-C2) of the bridge reinforcement pillar (2). 10. Sleeve according to claim 9, wherein the ball (3-3) 30 is arranged on both tubular portions so as to be offset (D31) relative to the longitudinal axis of at least one of the two tubular portions ( 3-1, 3-2) and preferably with respect to the two tubular parts. 35 11. The sleeve of claim 9 or 10, wherein the tubular portions (3-1, 3-2) have a textured surface (3-4) promoting the attachment of the resin or other binder. 12. Set of ready-to-assemble for the realization of a dental bridge frame, comprising: - at least two pillars (2) of bridge reinforcement according to any one of claims 1 to 8; and - at least one articulated sleeve (3) according to any one of claims 9 to 11. 13. ready-to-assemble assembly according to claim 12, further comprising at least one interface piece (1) for each of the bridge frame pillars (2) which interface piece has: - a passage hole for a fixing screw (7) of the bridge frame abutment (2) on an implant (8) or on the secondary abutment (9) fixed on the implant; a first end intended to be brought into sealed contact with the dental implant (8) or on the fixed secondary abutment (9) on the dental implant; and a second end on the side opposite the first end, the second end being designed to be preferably fixed by gluing on the fixing end of the main body (2A) of the bridge reinforcement pillar (2). 14. ready-to-assemble kit according to claim 12 or 13, comprising at least two articulated sleeves (3) according to any one of claims 9 to 11 and further comprising at least one connecting pin (4) to achieve a link between the two hinge sleeves, the ends of the connecting pin being adapted to be engaged in one of the tubular parts of the hinged sleeves (3), the connecting pin preferably having a textured surface (4-1) promoting the attachment of a resin or other binder. The kit of any one of claims 12 to 14, further comprising: - at least one retention member support (5; 5-1) adapted to be mounted on the axis of link (4), either on one of the tubular parts (3-1; 3-2) of the or an articulated sleeve (3); and - at least one retention member (6) arranged to be slidably arranged, preferably by means of a dovetail shaped portion, on the retention member support (5; 5-1), retention member being adapted to receive and support a prosthetic tooth.