DENTAL RESTORATION KIT

Description

[0001] The present invention relates to a dental restoration kit.

[0002] Dental restoration allows for the creation of artificial teeth for a partially or completely edentulous patient. It relies on the integration of one or more implants into the bone structure, achieved through an incision in the gum to access and drill into the bone. Next, a healing element is generally attached to an implant, and this assembly remains untouched until the implant integrates with the bone through osseointegration and the gum heals around the healing element. The dental restoration can be completed by attaching a restorative abutment to the implant, onto which the dental prosthesis is fixed. The abutment and the dental prosthesis are customized, adapted to the patient's anatomy and the tooth to be replaced, to achieve a result as close as possible to an ideal natural dentition.For this, the precise volume of the space to be restored is generally taken into account by taking an impression, which allows for the personalized manufacture of the dental prosthesis.

[0003] In the current state of the art, existing methods of dental restoration encounter some or all of the following technical problems: In many existing procedures, a new intervention on the gum is carried out after it has healed following the placement of the implant, in order to take the impression, material or digital, of the space to be restored, while having a view of the implant and the gum in order to take into account precisely the whole of this geometry, in order to manufacture an abutment and a prosthesis of precise shapes: this approach is naturally traumatic;Other existing procedures limit this trauma by using healing components that are not removed during impression taking, so as not to damage the gum: in return, these procedures use specific healing elements, generally of a roughly cylindrical and standard shape, and sometimes incorporating indicators and / or several additional components to allow consideration of all or part of the geometry above the implant without having full access to it through impression taking. These less traumatic methods then present other disadvantages, in terms of complexity and / or less effective optimization of the healing phase.

[0004] Document WO2014081843 describes a dental restoration assembly that can be fixed to an implant. Document US5810592 describes a dental restoration assembly in which a healing element is intended to cooperate with a prosthesis-supporting assembly. However, these constructions have drawbacks.

[0005] Thus, a general object of the invention consists of a dental restoration solution that does not include all or part of the disadvantages of the prior art.

[0006] More specifically, a first object of the invention is a dental restoration solution that minimizes patient trauma during the restoration process.

[0007] A second object of the invention is a dental restoration solution that allows for a restoration that is as adapted as possible to the patient's anatomy.

[0008] A third object of the invention is a dental restoration solution that is as universal as possible, suitable for any implant and any restoration. To this end, the invention is precisely defined by the claims.

[0009] Other advantages and features of the invention will become clearer upon reading the description of preferred embodiments which will follow, with reference to the figures, which are provided as indicative and non-limiting examples: THE figures 1A, 1B and 1C represent respectively perspective views of a dental restoration assembly comprising a healing element, an implant, and a removable prosthesis support provided with a prosthesis receiving portion according to a first embodiment of the invention; Figures 1D and 1E represent respectively longitudinal cross-sectional views of the dental restoration assemblies depicted on the Figures 1A to 1Cequipped with a first variant of a locking element, according to the first embodiment of the invention; the figure 1F represents a perspective view of the removable support of a prosthesis, according to the first embodiment; the figure 1G represents a longitudinal cross-sectional view of the removable support of a prosthesis, according to the first embodiment of the invention; the figure 1H represents a perspective view of the first variant of the locking element, according to the first embodiment figures 1I and 1J represent respectively longitudinal cross-sectional views of the dental restoration assemblies depicted on the Figures 1A to 1C equipped with a second variant of the locking element, according to the first embodiment of the invention figure 2Arepresents a perspective view of a dental restoration assembly comprising a healing element, an implant, and a removable prosthesis support provided with a receiving portion for a crown prosthesis according to a second embodiment of the invention; figure 2B represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 2A according to the second embodiment of the invention; the figure 3A represents a perspective view of a dental restoration assembly comprising a healing element, an implant, and a removable prosthesis support provided with a receiving portion for a crown prosthesis according to a third embodiment of the invention; figure 3B represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 3A according to the third embodiment of the invention; the figures 4A, 4B and 4Crepresent respectively perspective views of a dental restoration assembly comprising a healing element, an implant, and a removable prosthesis support provided with a receiving portion for a crown prosthesis according to a fourth embodiment of the invention; figure 4D represents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 4A to 4C according to the fourth embodiment of the invention; the figures 5A, 5B and 5C represent respectively perspective views of a dental restoration assembly comprising a healing element, an implant, and a removable prosthesis support provided with a receiving portion for a crown prosthesis according to a fifth embodiment of the invention; figure 5D represents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 5A to 5C according to the fifth embodiment of the invention; the figures 5E, 5F and 5Grepresent respectively perspective views of the dental restoration assemblies depicted on the Figures 5A to 5C with the removable support of a prosthesis that is disassembled from the healing element according to the fifth embodiment of the invention; the figure 5H represents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 5F to 5G according to the fifth embodiment of the invention; the figures 5i, 5J, 5K, 5L and 5M represent respectively perspective views of the removable support of a prosthesis comprising the receiving part of the apex prosthesis according to the fifth embodiment of the invention; the figure 6Arepresents a perspective view of a dental restoration assembly comprising a healing element, an implant, and a removable prosthesis support provided with a receiving portion for a crown prosthesis, as well as a locking element according to a sixth embodiment of the invention; figure 6B represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 6A according to the sixth embodiment of the invention; the figure 6C represents a perspective view of the entire dental restoration depicted on the figure 6A with the removable support of a prosthesis that is disassembled from the healing element according to the sixth embodiment of the invention; the figure 6D represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 6C according to the sixth embodiment of the invention; the figures 6E, 6F, 6G and 6Hrepresent respectively perspective views of the removable support of a prosthesis comprising the receiving part of the apex prosthesis according to the sixth embodiment of the invention; the figures 6I and 6J represent a perspective view of the complete dental restoration in figures 6A to 6D, comprising the healing element, the implant, and a variant of the removable support provided with a receiving portion for a crown prosthesis, as well as a locking element according to a sixth embodiment of the invention; figures 6k to 6M each represent a longitudinal cross-sectional view of the entire dental restoration depicted on the figures 6I and 6J according to the sixth embodiment of the invention; the figures 8 and 9 represent respectively perspective views from below and above of a healing element according to any one of the first to sixth embodiments of the invention; figures 10A to 10C and 11A to 11Crepresent respectively top and bottom perspective views of a series of healing elements according to any one of the first to sixth embodiments of the invention; figures 12A to 12C, 13A to 13C and 14A to 14C represent respectively side, top and bottom views of a series of healing elements according to any one of the first to sixth embodiments of the invention; the figure 15 illustrates a cross-sectional view of a healing element arranged in an implant according to any one of the first to sixth embodiments of the invention; the figure 16 illustrates a side view of a healing element disposed in an implant according to any one of the first to sixth embodiments of the invention; the figure 17 represents a cross-sectional view of an implant according to any one of the first to sixth embodiments of the invention; the figure 18illustrates a cross-sectional view of a healing element fixed to an implant by a screw according to any one of the first to sixth embodiments of the invention; the Figures 19 and 20 represent respectively a side view and a cross-sectional view of an intermediate phase of association of an implant with a healing element and with a screw according to any one of the first to sixth embodiments of the invention; the figure 21 illustrates a cross-sectional view of a healing assembly comprising a healing element surrounded by gingiva and fixed in an implant according to any one of the first to sixth embodiments of the invention; the figures 22, 23 and 24 represent two schematic views of a cross-section of a gum in which a healing element is fixed according to any one of the first to sixth embodiments of the invention; the figure 25 represents the upper and lower teeth in a top view; the figure 26represents a view of the teeth according to a justa-gingival section; the figure 27 represents a horizontal section of the dentition at the justa-gingival level, as well as the corresponding healing elements retained according to any one of the first to sixth embodiments of the invention; the Figures 28 to 30 represent cross-sectional views through a vertical median plane according to any one of the first to sixth embodiments of the invention.

[0010] In the embodiments shown on the figures 1A to 6H And 6J and 6k to 6M the dental restoration kit 1a, 1b, 1c, 1d, 1e , 1fincludes a healing element, suitable for connection with a dental implant 60 (which will be more simply called implant 60), and a removable support for a prosthesis, in particular a 25, 25' apex prosthesis. Such a dental restoration assembly contributes to the implementation of a second phase of a dental restoration procedure which may comprise three phases: a first phase called healing during which one or more implant(s) are integrated into the patient's bone structure by osseointegration, and during which the particular healing element is used, as will be detailed later; a second phase of placement of a temporary summit prosthesis 25 on the healing element(s) via the removable support and this in particular during the time necessary for healing, and a third phase of restoration as such, during which a definitive summit prosthesis 25' is placed on the implant(s) via a restoration abutment or directly on the healing element(s) via the removable support.

[0011] It should be noted that the second phase can be implemented during the first phase. In a particular case, the so-called temporary apex prosthesis 25 may have characteristics adapted for permanent use, and in this case, the third phase coincides with the second phase.

[0012] As a side note, there are also many situations in which it is not recommended to place a prosthesis during the healing process, specifically during the first two phases mentioned above. While such a prosthesis offers an aesthetic advantage, it risks placing stress on a healing implant, which can be detrimental. Therefore, the healing element must be suitable for use alone in the mouth, either during the first phase or the first two phases, and also for situations where adding a prosthesis is preferred, whether in the first, second, or third phase. Thus, the healing element can be configured in two ways: first, with a removable prosthesis support, and second, with the prosthesis fixed directly to the implant without any additional prosthesis or other components.

[0013] With reference to figures 1A to 1E , 1I to 5H , 6A to 6D , 6I and 6J, and 6K to 6M And 15 à 21The implant 60 comprises a cylindrical or frustoconical overall shell and a longitudinal axis L forming an axis of revolution for this overall shell. The implant 60 includes an anchoring means for the patient's bone structure. This anchoring means may be a set of threads arranged around the outer periphery of the implant and comprising a variable thread pitch. A lower portion of the implant, i.e., a portion of the implant at the base of the bone structure, may comprise larger threads, while an upper portion of the implant, i.e., a portion of the implant on the side facing the surface of the bone structure, may comprise finer threads. The implant includes an opening on the side of its upper end, along the longitudinal axis L, inside which is a connection device with a healing element 10.The connection device comprises a threaded opening 21, a hexagonal opening 22 extending from the threaded opening, and a conical bearing surface opening onto a superior face of the implant. The threaded opening 21, the hexagonal opening 22, and the conical bearing surface are adjacent, coaxial with the longitudinal axis L, and arranged such that the threaded opening 21 is on the lower side of the implant 60, the conical bearing surface is on the upper side of the implant 60, and the hexagonal opening 22 is between the threaded opening 21 and the conical bearing surface.

[0014] In this assembly, the healing element 10, also known as the "cap," is a single-piece unit, meaning it is made from a single piece and preferably from a single material. Its function is to be housed within the incised gum tissue after the implant has been fixed to the implant, either directly or indirectly, preferably with a removable attachment.

[0015] As illustrated on the figures 8 to 30 The healing element 10 comprises an upper portion 31 intended to be in contact with the gingiva and a lower portion 32 intended to be inserted into the implant opening to cooperate with the connection device. The healing element includes a through-hole 11 oriented along an axis and intended to receive a screw 40 screwed into the threaded opening 21 of the implant. In other words, the healing element 10 includes, in particular, an opening in a surface opposite to a terminal surface 14, which will be specified later. The healing element 10 is therefore intended to be fixed directly to the implant by means of the screw 40. When the healing element is fixed to the implant, the axis of the through-hole 11 coincides with the longitudinal axis L of the implant. This assembly is illustrated in particular by the figures 18 And 21The through opening 11 is generally cylindrical in shape and includes, at one end on the upper part, a conical bearing surface 33. This conical bearing surface 33 is designed to cooperate with a conical bearing surface of a screw head 41 of complementary shape so as to form a sealing interface. The conical bearing surface 33 and the screw head 41 thus function as a sealing cone.

[0016] The healing element 10 includes at least one thread 34 located at the opening 11 and adapted to cooperate with a threaded portion of the screw 40 to prevent dissociation between the screw 40 and the healing element 10 by a single translational movement. The screw 40 includes an unthreaded cylindrical portion between the threaded portion and the screw head 41. The threaded portion is designed to cooperate with the threaded opening 21 of the implant to lock the healing element in position. The cylindrical portion of the screw is designed to be positioned along the opening 11 of the healing element. When assembling the screw 40 with the healing element 10, the screw must be screwed through at least one thread 34. The screw is designed so that, when the screw head 41 is in contact with the conical bearing surface 33 of the healing element, at least one thread 34 is opposite the cylindrical part of the screw.Advantageously, the threaded portion of the screw 40 cannot simultaneously engage with the at least one thread 34 and the threaded opening 21 of the implant. This captive screw assembly prevents the accidental separation of a healing element from its associated screw. For example, this assembly prevents the screw from falling out when handling the healing element. The healing element and the screw can thus be delivered pre-assembled, reducing the amount of handling required by the dentist. Furthermore, the at least one thread 34 also provides an attachment point for the healing element, which can be used during subsequent removal of the healing element. Indeed, the dentist can then partially unscrew the screw so as to dissociate its threaded part from the threaded opening 21 of the implant while maintaining a grip of the threaded part on at least one thread 34 of the healing element.The dentist can then easily grasp the screw head and pull on it to remove the healing element without transmitting any force to the implant and without causing discomfort to the patient.

[0017] As previously mentioned, as an alternative to the direct attachment of the healing element 10 to the implant 60 described earlier, the latter can be attached indirectly to this implant 60. Indeed, according to a method described in document FR3027792, this healing element 10 can be removably attached to an abutment base which is connected to the implant 60. In this configuration, the implant 60 is secured to the bone, the abutment base is fixed to the implant 60, so that its collar is positioned at the boundary between the bone and the gingiva. The healing element covers the abutment base up to the collar, so that the gingiva is almost exclusively in contact with the healing element 10. The assembly formed by the healing element on this abutment base thus corresponds to a healing assembly described previously.As a point of note, in all cases, the removable denture support is separate from the healing unit, meaning it is distinct from both components or from the single component it contains. Specifically, the removable support does not participate in any impression-taking function, digital or otherwise. It is the healing unit alone, after removal or in the absence of a removable denture support, that is used for taking impressions, particularly digital impressions using a scanner.

[0018] In the embodiment described above, in which the healing element 10 is a single piece, it includes at its lower end and on one outer periphery a hexagonal portion 35 adapted to cooperate with the hexagonal opening 22 of the implant. The interface thus formed ensures fixation of the healing element 10 in a single orientation, without rotation of the healing element around the implant 60. The hexagonal portion 35 and the hexagonal opening 22 are anti-rotational elements that could be replaced by any other equivalent anti-rotational elements. Furthermore, the healing element also includes on the outer periphery of its lower part 32 a frustoconical or substantially frustoconical portion 36 adapted to cooperate with the conical bearing surface 23 of the implant to form a watertight interface between the implant and the healing element.The frustoconical portion 36 forms a boundary between the lower part 32 and the upper part 31 of the healing element. The conical bearing surface 23 and the frustoconical portion 36 act as a sealing cone and also uniquely position the healing element relative to the implant. In fact, the assembly of the conical bearing surface 23 with the frustoconical portion 36 constitutes a pivot joint whose axis coincides with the longitudinal axis L. Specifically, after tightening the screw 40, such a joint eliminates any translational play between the healing element and the implant along the longitudinal axis L or any axis perpendicular to the longitudinal axis L.Furthermore, as rotation of the healing element relative to the implant is impossible thanks to the interface formed by the hexagonal section portion 35 and the hexagonal section opening 22, the connection between the healing element and the implant is a particularly rigid connection.

[0019] The upper part of the healing element comprises an end face 14 through which the conical bearing surface 33 of the opening 11 opens, and a lateral surface 13 around which the gingiva is intended to heal. The conical bearing surface is oriented towards the interior of the healing element so that the screw head 41 is embedded within the healing element. Thus, the screw head 41 does not protrude from the end face 14. The screw head 41 is therefore arranged to close the opening 11 in the end face, while extending its surface to create a continuous final surface, as is particularly visible on the figure 18 .

[0020] Existing implants can have different shapes and, in particular, different connection devices. There can be as many different healing elements as there are different connection devices, so that each existing implant can have a healing element with a connection device that is suitable for it.

[0021] The healing element 10 is designed to be housed within the incised gingiva after implant placement. The final configuration is shown on the figure 21. In this configuration, the implant 60 is fixed to the bone structure 62 and emerges slightly from the bone part in the gingiva 63. The healing element 10 is fixed to the implant 60 so that the gingiva is almost exclusively in contact with the healing element 10. The healing element participates, preferably temporarily, in a restorative process, allowing the healing and the smooth fabrication of the final summit prosthesis 25'.

[0022] The gingiva heals around the lateral surface 13 of the healing element 10. For this reason, this lateral surface 13 is chosen to best match the patient's oral environment. The terminal surface 14 of the healing element is designed to remain visible above the gingival surface 64 of the gingiva, since the gingiva 63 remains in full contact with the lateral surface 13 of the healing element. Note that the upper part of the lateral surface 13 and the terminal surface 14 thus form an emergent surface of the healing element. This emergent surface is illustrated in particular by the figures 22 to 24To this end, healing elements of varying heights can be provided to accommodate different oral geometry configurations. As examples, three standard heights allow for good adaptation to all situations. These heights are advantageously between 3 and 10 mm. Color-coding the screw allows for quick identification of the healing element's height. For example, a blue screw can be associated with the small healing element, a green screw with the medium-sized element, and a red screw with the large element. This simplifies communication between dentists and dental technicians.

[0023] According to the embodiment of the invention, the shape of the healing element is specifically chosen to promote gingival healing, according to an anatomical shape that best corresponds to the tooth to be replaced and consequently also to the future upper prosthesis intended to occupy this oral space. This shape is characterized in particular by the plane section of its lateral surface 13, this section being a transverse section by a plane perpendicular P to the lateral surface 13, shown in the figure 18 , and substantially parallel to the terminal surface 14. As a remark, this section is substantially reproduced by the shape of the terminal surface 14, or more precisely by the projection of this terminal surface 14 onto such a perpendicular plane, that is to say substantially parallel to the gingival surface 64.

[0024] To understand the approach taken, the figure 25illustrates a top view of the upper and lower teeth and the figure 26 illustrates a cross-sectional view at the level of the justogingival plane PJ of a dentition, represented on the figure 21 , at the level of the root of the tooth emergences. These figures show that the teeth have sections of different shapes, which can be simplified by rectangular and / or square and / or triangular shapes, but more precisely trapezoidal.

[0025] Depending on the chosen method of implementation, a series of 10 different shaped healing elements will allow for the best possible reproduction of these different shapes. figure 27This figure represents a top view of the sections of all the teeth and a top view of the healing elements 10 associated with each tooth. The shapes of the different series of teeth, numbered 11 to 18, 21 to 28, 31 to 38 and 41 to 48 in this figure (these numbers should not be confused with the numerical references used elsewhere in the other figures to designate the features of the invention), are all approximated by means of four different healing elements 10, referenced A to D. For some teeth, or even all the teeth, several healing elements, among the healing elements A to D, appear suitable.

[0026] In the example of implementation chosen and illustrated by the figure 27Healing elements A are suitable for restoring upper lateral incisors and all lower incisors. Healing elements B are suitable for restoring canines and premolars, healing elements C are suitable for restoring intermediate molars, and healing elements D are suitable for restoring the largest molars. Alternatively, the healing element series 10 could include a completely different number of different healing elements, for example, three or five different healing elements.

[0027] These elements of wound healing will now be described in more detail by considering a series of three elements: A, B, and C. Element A of wound healing is particularly illustrated by the Figures 10A to 14A , the healing element B by the figures 10b to 14b and the healing element C by the figures 10c to 14cTo avoid making the figures too cumbersome, the numerical references are not reproduced on all the healing elements of these figures; however, all these healing elements possess the same characteristics, which will be described.

[0028] As is apparent from Figures 10A to 13C The terminal surfaces 14 of these healing elements 10 (A to C), intended for positioning above the gingival emergence, are substantially flat and intended for positioning parallel to a horizontal plane (parallel to the justogingival plane PJ, between 1 and 2 mm inclusive above this plane) corresponding to the cutting plane of the figure 25 However, they are slightly domed, with a central part 145, particularly visible on the figures 12A to 12C , intended to rise higher beyond the gum than its peripheral parts 146.

[0029] The cross-section of the healing element, by a plane P perpendicular to its lateral surface 13, as explained previously, which gives the final shape to the gingiva after healing, is substantially reproduced by the terminal surface 14 of the healing element (in particular its projection onto a plane P), which is its extension. The cross-sections of all the healing elements are substantially trapezoidal in shape. They comprise a longer side 141, which will be positioned on the outside of the mouth (vestibular side), a parallel shorter side 142, which will be positioned on the inside of the mouth (lingual side), connected by two sides 143, 144. The intersection of the diagonals of the trapezoid defines a center 15. Preferably, this center 15, thus defined, lies on the axis of the through opening 11 of the healing element.Furthermore, by similarly considering the center 17 of the opening 11 at the lower end of the healing element in the alternative of a restoration set in several distinct elements, substantially circular, it is possible to define a central axis 18 of the healing element, passing through the two central points 15, 17. This axis 18 of the healing element 10 is perpendicular to the terminal surface 14. Preferably, the axis 18 of the healing element, whether monobloc or not, is coincident with the axis of the through opening 11 and the longitudinal axis L of the implant.

[0030] The three types of healing elements 10, A, B, and C, therefore differ primarily in the trapezoidal shape of the cross-section of their lateral surfaces 13. Depending on the healing element considered, the trapezoidal shape may approximate a triangular, rectangular, or even square shape. Examples of implementation include the figures 14A to 14CThe dimensions of these healing elements are approximate, in millimeters. Naturally, this roughly trapezoidal shape features rounded corners and curved sides to ensure it does not impinge on the gum. Furthermore, the terminal surface 14 of each healing element, with the exception of the opening 11, is a continuous surface, free of ridges, hollows, grooves, edges, and / or asperities. This surface is convex. This smooth geometry promotes oral hygiene, reduces food accumulation, and minimizes plaque buildup. Note that when the healing element is fixed to an implant by means of a screw 40, the screw head 41 completes the terminal surface 14, which becomes essentially continuous, even at the opening 11.Thus, this surface, closed by the screw head, essentially exhibits the property of a continuous surface, without relief, hollow parts, grooves, edges, or asperities. This design optimizes the use of a single healing element. Furthermore, sealing is ensured at the interface between the screw head 41 and the terminal surface 14.

[0031] Alternatively, the healing element series could include a different number of different geometries, for example at least two. In a simplified embodiment, a single healing element shape could be suitable for all teeth.

[0032] According to other embodiments, the cross-section of a healing element at its lateral surface 13 could approximate any polygon, such as a three-, five-, or six-sided polygon. Alternatively, the angles of these polygons could be so rounded that the overall shape would approximate an oblong shape, or even an ovoid cross-section, or any other shape further removed from a polygon. Advantageously, this shape includes at least one geometrically defined center or point to define a center 15, or even a possible axis 18, of the healing element. This cross-section is obtained by a cutting plane substantially parallel to the justogingival plane.

[0033] Depending on the embodiment, the geometry of the visible emergent surface of the healing element on the inside of the mouth differs from the geometry on the outside, to account for the curvature of the gingiva. This shape of the emergent surface of the healing element is therefore asymmetrical with respect to a median plane containing the tangent T to the gingiva, shown in the diagram. figures 13A to 13C , and more specifically on the figure 25Considering a tooth 50 to be restored. This median plane, called the tangent plane T, is parallel to the tangent T to the gingiva, perpendicular to the justogingival plane PJ, and passes through the midline 15 of a healing element. In other words, the geometry of the visible emergent surface of the healing element on the inside of the mouth differs from the geometry on the outside, to account for the curvature of the gingiva or the natural shape of the teeth. In particular, the height along the longitudinal axis of the healing element on the lingual side, that is, on the inside of the mouth, may be greater than the height of the healing element on the outside of the mouth. The shape of the emergent surface of the healing element is therefore asymmetrical with respect to a plane parallel to the longitudinal axis and passing through the center 113 of the terminal surface 111.On the one hand, this asymmetry can be characterized by different shapes of the healing element on either side of the plane, considering a projection of the healing element onto a plane perpendicular to the longitudinal axis. On the other hand, this asymmetry can be characterized by different heights of the healing element on either side of the plane. An example of such an asymmetry is particularly visible on the [image / reference]. figure 21 .

[0034] Thus, a circular shape for the cross-section of a healing element, associated, for example, with a cylindrical healing element, is unsuitable. More generally, any plane curve exhibiting symmetry about a point or axis is poorly suited or unsuitable for the aforementioned cross-section of the healing element, because, on the one hand, it would not be adapted to the anatomy of the mouth and, on the other hand, its circular orientation around this axis would no longer be identifiable. For the same reasons, the emergent and visible surface of the healing element is therefore not symmetrical with respect to at least one, or even several, planes parallel to its axis 18, and / or including this axis 18. It is not symmetrical with respect to at least one, or several, planes perpendicular to the emergent surface and passing through its center 15 or including the axis 18, which we call perpendicular median planes.In the example shown, only the plane perpendicular to the aforementioned tangent plane T, passing through the midpoint of the two sides 141 and 142, forms a plane of symmetry. The preceding remarks apply to the emergent surface of the healing element, or to its cross-section by a previously defined cutting plane P, or to the projection of its emergent surface onto such a plane P (parallel to the justogingival plane). The perpendicular median plane is then any plane perpendicular to plane P and passing through the center of the considered geometry of the healing element. Alternatively, a perpendicular median plane can be defined as any plane containing the axis 18 of the healing element. This emergent surface of a healing element can ultimately take any identifiable three-dimensional form, allowing the healing element used to be recognized and, if necessary, its orientation to be determined, thus fulfilling a second function that will be detailed later.

[0035] The terminal surfaces 14 of the healing elements extend from their periphery 146 by the lateral surface 13, around which the gingiva heals, thus giving the gingiva shape adapted to the future apex prosthesis. This lateral surface 13 has several surfaces 131, 132, 133, 134, substantially flat, possibly slightly curved, extending in a direction substantially parallel to the axis 18 of the healing element and / or parallel to the longitudinal axis L of the implant, respectively extending the different sides 141, 142, 143, 144 of the terminal surface 14 of the healing element. The interfaces between the terminal surface 14 and these different parts of the lateral surface 13 are formed by rounded, smooth, and in particular convex surfaces.

[0036] The healing element can be made of a medical-grade plastic material and is available in pink, white, or cream. Specifically, it can be made from a polymer material, such as PEEK. Alternatively, it can be made of metal, for example, titanium, or zirconia. Indeed, this healing element can be made of titanium with a zirconia nitride surface treatment, notably to improve its visibility on oral scanners, while remaining biocompatible. The healing element can be manufactured by machining, molding, and / or additive manufacturing, in other words, by 3D printing.

[0037] The use of healing elements promotes optimal gum healing during dental restoration procedures due to their geometry, which is designed to conform to oral anatomy. It should be noted that this healing element can also be entirely subgingival and invisible, then made visible through a procedure on the gum. In this case, the outermost part of the healing element is still sometimes referred to, somewhat inaccurately, as the emergent portion.

[0038] Furthermore, the emerging surface of the healing element 10, formed by the terminal surface 14 and possibly the upper part of the lateral surface 13, may advantageously include at least two informative markers allowing the identification of at least two characteristics of the healing element 10 and / or indirectly of the abutment base and / or the dental implant 60. The provision of such informative markers on the healing element 10 makes it possible to avoid using a traditional impression-taking technique on the implant and to reduce the time required and the complexity of subsequently developing either the dental restoration abutment which will be placed in place of the healing element 10 and on which the final prosthesis will be fitted, or the definitive summit prosthesis 25' which will be placed in place of the temporary summit prosthesis 25.Note that these markers are optional, because in one embodiment, the shape of the emerging surface of the healing element alone will suffice for the automatic identification of the same information, due to the specific asymmetrical shape of this emerging surface. It is therefore important to clearly differentiate between the solution with a marker and the solution without a marker. A marker is defined as a specific symbol or shape, dedicated to its recognition, whose sole function is that recognition; the marker is generally designed specifically to be easily recognized by a scanner. It generally has no impact or a negative impact on the primary healing function of the healing element. The alternative of the invention consists of not using a marker, but recognizing the particular shape of the healing element, especially its terminal part, to deduce the desired information. In this case, the recognized shape primarily has a main technical function of anatomical healing. The invention takes advantage of this anatomical characteristic to do without a marker. Recognition is more difficult with this alternative, but it has the advantage of not altering the ideal shape designed for healing, with the secondary purpose of forming an indicator.Therefore, this alternative solution without markers, or with fewer markers (compared to a solution based solely on markers), is advantageous and preferred.

[0039] In one embodiment, the characteristics identified by the information markers include one or more of the following elements: the height of the healing element 10, the shape of the healing element 10, in particular the shape and dimensions of the cross-section of its lateral surface 13 or of the projection onto a parallel plane of the emerging surface, the dimensions of the connecting part of the healing element 10 with or without abutment base, and therefore of the dental implant 60, the orientation of the dental implant 60, via the orientation of the cap, for example by a marker aligned with an anti-rotational element of the cap.

[0040] In one particular embodiment, said at least two informative markers comprise a first type of informative marking of a first characteristic of the healing element 10 and a second type of informative marking of a second characteristic of the healing element 10. These first and second characteristics related to the healing element 10 are, in particular, the height of the healing element 10 and / or the shape of the healing element 10, specifically the shape and dimensions of the cross-section of its lateral surface 13 or the projection onto a parallel plane of the emerging surface. Indirectly, a marker can allow information to be deduced about the abutment base, if present, and possibly about the implant, such as their orientation, which may be related to the orientation of the healing element.

[0041] Without limiting the freedom in designing informational markers, each informational marker belongs in particular to one of the following types: a negative information marker, particularly an indentation in one of the surfaces of the healing element 10, especially on its emergent surface; a positive information marker, particularly a raised feature on one of the surfaces of the healing element 10, particularly on its emergent surface; an information marker of a specific and identifiable shape formed in one of the surfaces of the healing element 10, particularly a polygon or a line; an information marker consisting of a readable numeric value or a readable identification code such as a barcode and / or a Data Matrix code. This marker may be composed of numbers and / or letters and / or any symbol and / or colors and / or laser markings; an information means consisting of an RFID chip.

[0042] As we saw previously, this dental restoration assembly 1a to 1f, comprising a healing element 10 suitable for connection with a dental implant 60, includes the removable support 2a to 2g for a prosthesis, which we will sometimes also simply call the "support". This removable support 2a to 2g includes a receiving portion 4 for a temporary apex prosthesis 25 (visible on the figure 4B ) and / or a definitive 25' summit prosthesis (visible on the figure 5A ). The receiving section 4 is provided with a first and a second component 7a, 7b, and a linking section 5, particularly visible on the Figures 1F and 1G .

[0043] This connecting portion 5 is capable of cooperating with a corresponding connecting zone 6 defined in the through-hole 11 formed in the healing element 10. Indeed, such a connecting portion 5, which allows for the removable mechanical connection of this support 2a to 2g to the healing element 10, includes, in particular at one free end, a fastening element 8 such as a first clipping member, in particular a male clipping member, or a threaded portion. In this context, when the connecting portion 5 includes the first clipping member, the latter is then capable of cooperating with a connecting zone 6 such as a groove / slot defined in the wall of the through-hole 11 of the healing element 10 in order to achieve this mechanical connection.It should be noted that such a clip-on fastening allows for easy and repeated mounting and dismounting of the removable support 2a to 2g of the healing assembly during the fabrication of the apex prosthesis 25, 25' onto the removable support 2a to 2g, in order to perform polishing and / or adjustments outside the patient's mouth. It should also be noted that, in a variant where this fastening element 8 of the connecting part 5 includes a threaded portion, the latter is then able to cooperate with a connecting area 6, such as a tapped portion defined in the wall of the through-hole 11, for the creation of this mechanical connection.

[0044] In the first embodiment illustrated on the figures 1A to 1E And 1IThe removable support 2a is a single-piece component with a central, generally cylindrical, through hole 19 extending longitudinally from one end of the removable support 2a to the other. The first component 7a of the receiving portion 4 has inner and outer faces 9a, 9b and a predominantly rounded peripheral wall connecting these faces 9a, 9b. In this configuration, the second component 7b protrudes from a central region of the outer face 9b of the first component, extending longitudinally along an axis A3 that is substantially perpendicular to a plane P1 comprising this outer face 9b. This second component has an essentially frustoconical or cylindrical shape and has an outer surface provided with several retention elements 24 for a connecting element of the apex prosthesis 25, 25' onto the receiving portion 4 and thus onto this surface.When this bonding element is, for example, adhesive, each retention element 24 can be a cavity, a groove, a hole, or even a protrusion. It should be noted that each retention element 24 can also be a marker providing information on the maximum height for adjusting the apex prosthesis and / or the support. In addition, a portion of the through hole 19 of the removable support 2a, defined at the level of this second component 7b, includes a wall that is wholly or partially threaded.

[0045] In this removable support 2a, the connecting part 5 protrudes in a central region of the inner face 9a of the first component 7a. This connecting part 5 is specifically designed to be inserted into the through opening 11 of the healing element 10 when the removable support 2a is assembled to this healing element 10. This connecting part 5 includes a frustoconical or substantially frustoconical portion, adapted to cooperate with the conical bearing surface 33 of the healing element 10 to form a watertight interface between the removable support 2a and the healing element 10. Such a connecting part 5 includes at its free end the fastening element 8 such as the first clipping member.According to this embodiment, the first clipping member is located at one end of the through hole 19 in the removable support 2a and comprises several flexible fins, here two, three, or four, arranged around the axis of the through hole 19, extending to its lower end. These fins are spaced from each other by a substantially similar gap resulting from a material recess. Such fins are capable of moving from a rest position to a stress position when displaced substantially radially. Each of these fins has a shape that is complementary to the contact area 6, such as the groove with which they can cooperate to achieve this clipping fastening.

[0046] In this removable support 2a, the inner face 9a of the first component 7a is specifically designed to cover all or part of the emerging surface of the healing element 10, and in particular preferably the entire terminal surface 14 and part of the lateral surface 13 adjoining this terminal surface 14, as can be seen on the figures 1I and 1J . Thus, the inner face 9a includes a cavity 26 defined around the connecting part 5 which has a shape complementary to that of all or part of the emergent surface with which it is likely to be in contact.

[0047] In this first embodiment, the dental restoration assembly 1a may include a locking element 20a, 20b for stiffening the removable support 2a, comprising a body with first and second ends and having an overall cylindrical shape. With reference to the figure 1HThis locking element 20a, 20b can, for example, be a screw 20a, comprising a head and a shank. The head is then included in the first upper end of the body of this locking element 20a and has a threaded portion that is adapted to cooperate with the receiving portion 4, in particular with an inner wall of the through hole 19 defined at the level of the second component 7b, which is wholly or partially tapped. Alternatively, with reference to figures 1I and 1JThis locking element 20a, 20b can be a rod 20b, a part of whose body protrudes from the through hole 19 at the level of the second component 7b of the receiving part 4, when this rod is arranged in the dental restoration assembly 1a. Such a locking element 20a, 20b is intended to be inserted into the dental restoration assembly 1a by passing through the through hole 19 of the removable support 2a and penetrating the through opening 11 of the healing element 10, in order to actuate the flexible wings of the first clipping member so that they move from the rest position to the constraint position.By being in this constrained position, a larger part of these fins is then arranged in the groove defined in the wall of the through opening 11 and / or escape by retraction of these fins is impossible, which thus fulfills the function of locking the assembly of the removable support 2a with the healing element 10, or even with the healing assembly formed by the implant 60 and the healing element 10. In this context only the removal of this locking element 20a, 20b from the through hole 19 and the through opening 11 allows the fins to be disengaged from said groove.It should be noted that the locking element 20a, 20b is inserted into the through hole 19 until its second end, which also passes through the through opening 11 of the healing element 10, is arranged in a defined recess in the screw head 41 of the screw 40 that mechanically connects the healing element 10 to the implant 60. Thus, when the locking element 20a, 20b is arranged in this way within the dental restoration assembly 1a, the body of this locking element 20a, 20b is then contained between the flexible wings that are held in the locking position by clipping. It should be noted that when this locking element 20a, 20b corresponds to the screw 20a illustrated in the figure... figure 1H, its first upper end is included in the through hole 19 and its second lower end is located in the through opening 11 of the healing element 10, in particular in the housing defined in the screw head 41 of the screw 40 mechanically connecting the healing element 10 to the implant 60.

[0048] In the second embodiment illustrated on the Figures 2A and 2BThe removable support 2b, unlike the support in the first embodiment, which is a single piece, comprises two separate parts. In this configuration, the first part corresponds to the first component 7a of the receiving portion 4, which has inner and outer faces 9a, 9b and a predominantly rounded peripheral wall connecting these faces 9a, 9b. It also includes a central opening into which the second part, defining the second component 7b and the connecting portion 5 of the removable support 2b, can be inserted.Thus, when the two parts are assembled to form the removable support 2b, and mounted on the healing element 10, the second component 7b protrudes from a central region of the outer face 9b of the first component 7a, extending longitudinally along an axis A3 that is substantially perpendicular to a plane P1 comprising this outer face 9b. This second component 7b has an essentially frustoconical or cylindrical shape and has an outer surface provided with several retention elements 24 for a connecting element of the apex prosthesis to the receiving part 4, similar to the first embodiment. It should be noted that each retention element 24 can also serve as a marker providing information on the maximum height for adjusting the apex prosthesis and / or the support.

[0049] In addition, the connecting portion 5 protrudes from a central region of the inner face 9a of the first component 7a. This connecting portion 5 is specifically designed to be inserted into the through-hole 11 of the healing element 10 when the removable support 2b is assembled to this healing element 10. Such a connecting portion 5 includes, at its free end, the fastening element 8, here a threaded portion. This threaded portion is adapted to cooperate with the tapped portion defined in the wall of the through-hole 11 to establish this mechanical connection between the removable support 2b and the healing element 10.

[0050] In this removable support 2b, the inner face 9a of the first component 7a is in particular intended to cover all or part of the emergent surface of the healing element 10 and in particular preferably all the terminal surface 14 and part of the lateral surface 13 adjoining this terminal surface 14. In this context, the inner face 9a includes a cavity 26 defined around the central opening and therefore of the connecting part 5, which has a shape complementary to that of all or part of the emergent surface with which it is likely to be in contact.

[0051] It should be noted that the end of this removable support 2b includes a housing defined at the level of the second component 7b which is suitable for receiving a suitable tool such as a screwdriver allowing the screwing of the second part defining the second component 7b and the connecting part 5, into the through opening 11 of the healing element 10 for the assembly of this removable support 2b with the healing element 10.

[0052] In the third and fourth embodiments illustrated respectively on the Figures 3A and 3B , And 4A and 4DThe removable support 2c, 2d, unlike the support in the first embodiment which is a single piece, comprises two distinct parts. In this configuration, the first part corresponds to the receiving portion 4 of the removable support 2c, 2d. This receiving portion 4 has a central, generally cylindrical bore extending longitudinally through its body from one end to the other. This receiving portion 4 also includes the first and second components 7a, 7b, with the first component 7a having inner and outer faces 9a, 9b and a peripheral wall connecting these faces. In this configuration, the second component 7b protrudes from a central region of the outer face 9b of the first component 7a, extending longitudinally along an axis A3 which is substantially perpendicular to a plane P1 comprising this outer face 9b.This second component 7b has an essentially frustoconical or cylindrical shape.

[0053] In this removable support 2c, 2d, the connecting part 5 is constituted by the second part. This connecting part 5 is a screw having a head and a shank, which can be inserted into the bore provided in the receiving part 4 when the removable support 2c, 2d is mounted on the healing element 10. Thus, when the two parts are assembled together to form the removable support 2c, 2d, by being mounted on the healing element 10, the connecting part 5 protrudes into a central region of the inner face 9a of the first component 7a. The head of the screw forming this connecting part 5 is then arranged in the bore and one end of the shank in the through opening 11 of the healing element 10. In other words, this connecting part 5 is specifically designed to be inserted into the through opening 11 of the healing element 10 when the removable support 2c, 2d is assembled to this healing element 10.Such a connecting part 5 includes a threaded portion at its free end. This threaded portion is adapted to cooperate with the connecting area 6, here the tapped portion defined in the wall of the through opening 11 for the realization of this mechanical connection between the removable support 2c, 2d and the healing element 10.

[0054] In the third embodiment, this threaded part is defined in the wall of the through opening 11 included in the upper part 31 of the healing element 10, whereas in the fourth embodiment, this threaded part is defined in the wall of the through opening 11 included in the lower part 32 of the healing element 10.

[0055] In the third embodiment, the bore of the receiving portion 4 includes a bearing surface intended to cooperate with a bearing surface of the screw head of complementary shape so as to form a sealing interface. The bearing surface of the bore and the screw head thus have a sealing function.

[0056] In the fourth embodiment, the threaded portion of the connecting portion 5 simultaneously engages with the tapped portion 37 of the wall of the central opening and the threaded opening 21 of the implant 60. In this configuration, the healing element 10 is sandwiched between the removable support 2c, 2d and the implant 60. Thus, unlike the other embodiments, in this fourth embodiment, the dental restoration assembly 1d comprises a single screw formed by the connecting portion 5, which connects the removable support 2d, the healing element 10, and the implant 60. Additionally, the bore of the receiving portion 4 includes a conical bearing surface designed to cooperate with a conical bearing surface of the screw head of complementary shape to form a sealing interface. The conical bearing surface and the screw head therefore function as a sealing cone.In this configuration, the screw formed by the connecting portion 5 is designed so that, when the screw head 41 rests on the conical bearing surface of the bore, at least one thread 34 of the wall of the through opening 11 in the lower part 32 of the healing element 10 is aligned with the screw. Advantageously, the threaded portion of this screw cannot simultaneously engage with at least one thread 34 and the threaded opening 21 of the implant 60. Such a screw assembly, also called a "captive" assembly, prevents the accidental separation of a healing element 10 from the screw, in this case the connecting portion 5, to which it is attached. For example, this assembly prevents the screw from being dropped when handling the healing element 10.

[0057] In this removable support 2c, 2d of these two embodiments, the inner face 9a of the first component 7a is in particular provided to cover all or part of the emergent surface of the healing element 10 and in particular preferably all the terminal surface 14 and part of the lateral surface 13 adjoining this terminal surface 14. In this context, the inner face 9a includes a cavity 26 defined around the bore and therefore of the connecting part 5, which has a shape complementary to that of all or part of the emergent surface with which it is likely to be in contact.

[0058] In both embodiments, this second component 7b has an essentially cylindrical shape and includes an outer surface which may be provided or devoid of several retention elements for a connecting element of a summit prosthesis on the receiving part 4, in a manner similar to the first embodiment.

[0059] It should be noted that the head of the screw forming the connecting part 5 includes a housing which is suitable for receiving a suitable tool such as a screwdriver to ensure that this connecting part 5 is screwed into the through opening 11 of the healing element 10 for the assembly of this removable support 2c, 2d with the healing element 10.

[0060] In the fifth embodiment illustrated on the Figures 5A to 5MThe removable support 2e is a single-piece unit. In this removable support 2e, the first component 7a of the receiving portion 4 connects the second component 7b to the connecting portion 5. In this configuration, the second component 7b extends longitudinally along an axis A3. This second component 7b has an essentially cylindrical shape and an outer surface provided with several retention elements 24 for a connecting element of the apex prosthesis on the receiving portion 4, similar to the first embodiment. It should be noted that each retention element 24 can also be a marker providing information on a maximum adjustment height of the apex prosthesis and / or the support.

[0061] In this removable support 2e, the first component 7a is provided with a frustoconical portion cooperating with the conical bearing surface 33 of the healing element 10 to seal an interface between the healing element 10 and the removable support 2e and to reduce to zero any translational play between the healing element 10 and the removable support 2e.

[0062] The connecting portion 5 of this removable support 2e is specifically designed to be inserted into the through opening 11 of the healing element 10 when the removable support 2e is assembled to this healing element 10. This connecting portion 5 further includes the fastening element 8, formed by the first clipping member comprising two flexible wings in this embodiment. These two wings are spaced apart by a gap resulting from a material recess. Such wings are capable of elastically moving from a rest position to a stress position when displaced substantially radially. Each of these wings has a shape that is complementary to the connecting area 6 with which they can cooperate to achieve a clipping fixation.

[0063] This connecting part 5 further includes an anti-rotational element 16 for good retention of the removable support 2e in the healing element 10. This anti-rotational element 16 is defined on a part of a peripheral wall of this connecting part 5 which is opposite the wall of the through opening 11 of the healing element 10 above the connecting area 6 comprising the second clipping element, when the removable support 2e is assembled to the healing element 10.

[0064] In the sixth embodiment illustrated on the figures 6A to 6MThe removable support 2f, 2g is substantially similar to that of the fifth embodiment. The only difference between these two embodiments is the presence of a through hole 19 in the removable support 2f, 2g of this sixth embodiment. Indeed, in this embodiment, the removable support 2f, 2g is a single piece with this central, generally cylindrical through hole 19 extending longitudinally through the body from one end to the other of the removable support 2f, 2g. A portion of this through hole 19 of the removable support 2f, 2g, defined in the second component 7b, includes a wall that is wholly or partially threaded. In this configuration, the first clipping member is located at one end of this through hole 19 of this removable support 2f, 2g and comprises several flexible fins, here two, thus defining this end of the through hole 19.

[0065] In this sixth embodiment, the dental restoration assembly 1f may include a locking element 20a for stiffening the removable support 2f, 2g, comprising a body with first and second ends and having an overall cylindrical shape. This locking element 20a may, for example, be a screw comprising a head and a shank that is substantially similar to the locking element 20a illustrated in the figures 1H , 6C, 6D and 6K to 6MThe head of this locking element 20a is then included in the first end of the body of this locking element 20a and comprises a threaded portion adapted to cooperate with the receiving portion 4, in particular with a wall of the through hole 19 defined at the level of this second component 7b, which is wholly or partially threaded. Indeed, this wall of the through hole 19 may include at least one thread 42a, 42b; more precisely, in a first variant of the support element 2f, this wall comprises a single thread 42a defined in a lower portion 39a of the second component 7b, and in a second variant of this support 2g, the wall comprises two threads 42a, 42b arranged respectively in the lower portion 39a and in an upper portion 39b of this second component 7b. In these two variants of the removable support 2f, 2g, the remaining part 42c of this wall of the through hole 19, is not tapped.Such a locking element 20a is intended to be inserted into the dental restoration assembly 1f by passing through the hole 19 of the removable support 2f, 2g and the through opening 11 of the healing element 10 in order to actuate the flexible wings of the first clipping member so that they move from the rest position to the constraint position. By being in this constrained position, a larger part of these fins is then arranged in the groove defined in the wall of the through opening 11, resulting in a locking of the assembly of the removable support 2f, 2g with the healing element 10, or even with the healing assembly formed by the implant 60 and the healing element 10. In this context, only the removal of this locking element 20a from the through hole 19 and the through opening 11 allows a partial disengagement of the fins from said groove.It should be noted that the locking element 20a is inserted into the through hole 19 until its second end, which also passes through the through opening 11 of the healing element 10, is arranged in a defined recess in the screw head 41 of the screw 40 that mechanically connects the healing element 10 to the implant 60. Thus, with the locking element 20a arranged in the dental restoration assembly 1f in this way, the body of this locking element 20a is then contained between the flexible wings, which are held in the constrained position. It should be noted that when this locking element 20a corresponds to the screw illustrated in the figures... figures 1H , 6C, 6D, 6K to 6MIts first end is contained within the through hole 19, and its second end is located within the through opening 11 of the healing element 10, specifically within the recess defined in the screw head 41 of the screw 40 that mechanically connects the healing element 10 to the implant 60. It should be noted that the through hole 19 includes a conical bearing surface designed to cooperate with a conical bearing surface of the screw head of complementary shape to form a sealing interface. The conical bearing surface and the screw head thus function as a sealing cone.

[0066] With reference to the figure 6K, it will be noted that an arrangement of the screw head of the screw forming this locking element 20a, at the level of the untapped part 42c of the wall of the through hole 19 of the second variant of the removable support 2g corresponds to a screw assembly called "captive" which makes it possible to avoid accidentally dissociating the removable support 2g from the screw associated with it, for example this assembly makes it possible to avoid dropping the screw when handling this removable support 2g.

[0067] In addition, the removable support 2a to 2g of these embodiments includes the longitudinal axis A1 which extends over its entire length and which coincides with the axes of revolution A2, A3, A4 of the first and second components 7a, 7b of the receiving part 4 and the connecting part 5. This axis A1 of the removable support 2a to 2g also coincides with the axis L of the implant 60 and the axis 18 of the healing element 10.

[0068] In these embodiments, the removable support 2a to 2g can be made of a plastic material suitable for medical use. Specifically, this support 2a to 2g can be made from a polymer material, such as PEEK, PMMA, or POM, to facilitate adjustments and bonding of the apex prosthesis 25, 25' to the receiving portion 4. Alternatively, it can be made of metal, for example, titanium, or it can be made of zirconia or ceramic. The removable support 2a to 2g can be manufactured by machining and / or molding and / or additive manufacturing, i.e., by 3D printing.

[0069] Similarly, the locking element 20a, 20b can also be made of polymer material such as "PEEK" material or of metal for example titanium.

[0070] Thus, the invention offers the possibility of fabricating a temporary crown prosthesis in a patient's oral cavity while a dental restoration involving an implant is being performed, and in particular during the healing period associated with such a restoration. This is achieved using a support 2a to 2g, which can be removably mounted onto the healing element using a simple screw or clip fastening mechanism. This facilitates all operations related to the fabrication of temporary and / or definitive crown prostheses. Indeed, the support 2a to 2g can be easily removed from the patient's oral cavity to allow for adjustments or polishing of the crown prosthesis and / or the support 2a to 2g itself, or for other operations related to the fabrication of definitive crown prostheses, such as taking impressions.As a point of note, this removable feature allows only the removal of the support; the healing element remains securely in the mouth, fixed to an implant. The connection between the support and the healing element can vary. However, the healing element preferably includes a female connecting portion (particularly within its opening 11), and the support a corresponding male connecting portion. Indeed, a male connecting portion on the healing element would create a terminal surface poorly suited to remain alone in the mouth. As a further point of note, it is naturally apparent in all these embodiments that the support is separate from the healing element. Moreover, it is suitable for direct fixation to this healing element.

[0071] In addition, such a support 2a to 2g, along with a supported apex prosthesis 25, 25', when arranged in a patient's jaw, helps to maintain the adjacent teeth in position by acting as a brace between them, thus preventing convergence, particularly during the osseointegration phase of the implant. As a side note, when the support is fixed by a locking element 20a such as a screw, the prosthesis 25, 25' advantageously provides an opening for access to this locking element.

[0072] Advantageously, such a removable support (2a to 2g) prevents any damage to the emerging surface of the healing element, while still allowing for the fabrication of a terminal prosthesis. This is particularly advantageous because it enables the implementation of the final phase of dental restoration, which includes an automatic identification step of the geometry of the restoration pieces to be formed. This identification is based on the shape of the emerging surface of the healing element, the asymmetry of which allows for the automatic deduction of information regarding its positioning and, indirectly, the positioning and orientation of the implant.

[0073] On the other hand, the removable support 2a to 2g makes it possible to preserve the epithelial attachment of the soft tissues to the transmucosal part of the healing element 10 which would otherwise be damaged by other methods implemented in the state of the art for the realization of such a summit prosthesis in the context of dental restoration using an implant.

[0074] As a side note, the assembly formed by a healing element 10, a support, and a terminal prosthesis fixed to this support can also be advantageously used for fixing a definitive prosthesis. The invention is not limited to the embodiments described, and includes, for example, combinations of components from the embodiments described above.

[0075] The invention also relates to a restoration system that implements the restoration process mentioned above. This system comprises a dental restoration as described previously, an impression-taking element, in particular a digital impression scanner, and at least one computer that processes the images from the impression for automatic recognition, based on the anatomical shape of the healing unit or, alternatively, by marker recognition, of the type of healing unit and, indirectly, of the healed space and the implant positioning. Notably, this system uses the restoration in a second configuration in which any prosthesis mounted on a removable support is removed: the oral space with only the healing unit is digitized.

Claims

1. An assembly (1a, 1b, 1c, 1d, 1e, 1f) for dental restoration comprising a healing element (10) able to be connected to a dental implant (60), comprising a lateral surface (13) intended to be integrated within a gum for the purpose of shaping the gum as it heals, and an end surface (14) that forms, together with part of said lateral surface (13) an emergent surface, that is intended to remain outside the gum, and is asymmetrical with respect to at least one perpendicular median plane, and the healing element (10) comprising a through-opening (11) and a linking zone (6) defined in this through-opening, said assembly (1a, 1b, 1c, 1d, 1e, 1f) for dental restoration comprising a detachable prosthesis support (2a, 2b, 2c, 2d, 2e, 2f, 2g) comprising a receiving part (4) for a crown prosthesis (25, 25') and a linking part (5) capable of engaging with said matching linking zone (6) that is defined in said through-opening (11) that is provided in said healing element (10), said linking zone (6) being able to receive the detachable fixation of the detachable prosthesis support (2a, 2b, 2c, 2d, 2e, 2f, 2g) in a first configuration of the assembly for dental restoration, and said assembly (1a, 1b, 1c, 1d, 1e, 1f) for dental restoration comprising a screw (40) with a head (41), which is embedded in the healing element and does not exceed the end face (14) of the healing element (10) in a second configuration in which the healing element is fixed by itself to an implant using said screw (40), without a detachable prosthesis support (2a, 2b, 2c, 2d, 2e, 2f, 2g), so that the end surface (14) and / or the emergent surface of the healing element (10), supplemented by the head (41) of the screw (40) in this second configuration shapes a closed surface having a continuous surface, without raised portions.

2. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in the preceding claim, characterized in that parts of the emergent surface of the healing element (10) that are respectively intended to be positioned oriented toward the inside and toward the outside of the mouth have a different shape.

3. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in any one of the preceding claims, characterized in that a transverse section of the lateral surface (13) of the healing element (10) or a projection on a parallel plane of the emergent surface of the healing element (10) have: - a substantially trapezoidal shape or a substantially polygonal or triangular or square or rectangular or ovoid shape, or a substantially polygonal shape with rounded corners; and / or - a part intended to be positioned oriented toward the outside of the mouth that is bigger than a part intended to be positioned oriented toward the inside.

4. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in one of the preceding claims, characterized in that the end surface (14) and / or the emergent surface of the healing element (10) have: - a non-flat, curved surface; and / or - a convex surface.

5. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in any one of the preceding claims, characterized in that the emergent surface of the healing element has an identifiable three-dimensional shape, automatically enabling its recognition, its positioning, and / or its orientation and indirectly the positioning and the orientation of the implant, without a marker.

6. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in any one of the preceding claims, characterized in that the linking part (5) of the detachable support comprises, at a free end, a fixing element (8), such as a first clipping component or a threaded part, that is capable of engaging with said linking zone (6) of the healing element (10) in order to establish a mechanical link.

7. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in any one of the preceding claims, characterized in that the linking zone (6) of the healing element (10) comprises: - a second clipping component, in particular a recess, defined in a wall of the through-opening (11), which recess is designed to engage with a first clipping component; or - a tapped part defined in a wall of the through-opening (11) that is designed to engage with a threaded part of the fixing element (8) of the linking part (5).

8. The assembly (1a, 1b, 1c, 1d) as claimed in any one of the preceding claims, characterized in that the receiving part (4) of the detachable support (2a, 2b, 2c, 2d) comprises a first component (7a) provided with an internal face (9a) capable of covering all or part of the emergent surface of the healing element (10) and a second component (7b) projecting from an external face (9b) of the first component (7a).

9. The assembly (1e, 1f) as claimed in any one of claims of the preceding claims, characterized in that the receiving part (4) of the detachable support (2e, 2f, 2g) comprises a first component (7a) connecting a second component (7b) of this receiving part (4) with the linking part (5).

10. The assembly (1e, 1f) as claimed in the preceding claim, characterized in that the first component (7a) is provided with a frustoconical portion engaging with a conical bearing surface of the healing element (10) in order to seal an interface between the healing element and the detachable support (2e, 2f, 2g) and to reduce any translational play between the healing element and the detachable support (2e, 2f, 2g) to zero.

11. The assembly (1e, 1f) as claimed in any one of the preceding claims, characterized in that the linking part (5) is provided with an anti-rotation element (16) to properly hold the detachable support (2e, 2f, 2g) on the healing element (10).

12. The assembly (1a, 1f) as claimed in any one of the preceding claims, characterized in that the detachable support (2a, 2f, 2g) comprises a through-hole (19) extending longitudinally from one end to the other of the detachable support (2a, 2f, 2g).

13. The assembly (1a, 1f) as claimed in any one of the preceding claims, characterized in that it comprises a locking element (20a, 20b), a first end of which comprises a threaded part that is able to engage with the receiving part (4) of the detachable support (2a, 2f, 2g), in particular with a wall of a through-hole (19) defined on a second component (7b) of the receiving part (4) that is fully or partly tapped, and / or in that it comprises a locking element (20a, 20b), a second end of which is able to engage with the linking part (5) of the detachable support (2a, 2f, 2g), in particular with a first clipping component.

14. The assembly (1a, 1b, 1c, 1d, 1e, 1f) as claimed in any one of the preceding claims, characterized in that the detachable support (2a, 2b, 2c, 2d, 2e, 2f, 2g) is produced from a polymer material, in particular from a "PEEK", "PMMA" or even "POM" material, and / or in that the detachable support is a one-piece part (2a, 2b, 2e, 2f, 2g) and / or in that the healing element (10) is a one-piece part.

15. A system for dental restoration, characterized in that it comprises an assembly for dental restoration as claimed in one of the preceding claims, an element for taking a digital impression, in particular a scanner, and at least one computer that uses the images originating from taking a digital impression for automatic recognition, on the basis of the anatomical shape of the healing assembly and / or by recognizing at least one marker, of the type of healing element that is used, said system using the restoration assembly in its second configuration, in which only the healing assembly is digitized in the oral space.