DENTAL HEALING ELEMENT

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 further intervention on the gum is performed after it has healed following implant placement. This involves taking a physical or digital impression of the space to be restored, while also having a view of the implant and gum tissue to precisely account for the entire geometry. The goal is to fabricate an abutment and prosthesis with precise shapes. This approach is inherently traumatic. During the healing phase, a temporary restoration is placed in the mouth, its primary function being to promote gum healing. During this transitional period, which precedes the final restoration with a prosthesis fixed to the implant, the aesthetic aspect is often neglected.

[0004] US patent 5810592 describes a dental restoration assembly in which a healing element is designed to cooperate with a prosthesis support. Similarly, US patent 2013 / 0196290 describes another embodiment in which a prosthesis support is fixed to a healing element. 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 makes it possible to achieve a satisfactory aesthetic appearance during the transitional healing period.

[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.

[0009] For this purpose, the invention is precisely defined by the claims.

[0010] 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 an 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 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 embodiment of the invention; the figure 1H represents a perspective view of the first variant of the locking element, according to the 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 embodiment of the invention figures 2 and 3 represent respectively perspective views from below and above of a healing element according to an embodiment of the invention; figures 4A to 4C and 5A to 5Crepresent respectively top and bottom perspective views of a series of healing elements according to the embodiment of the invention; figures 6A to 6C, 7A to 7C and 8A to 8C represent, respectively, side, top, and bottom views of a series of healing elements according to the embodiment of the invention; the figure 9 illustrates a cross-sectional view of a healing element arranged in an implant according to the embodiment of the invention; the Figure 10 illustrates a side view of a healing element arranged in an implant according to the embodiment of the invention; the figure 11 represents a cross-sectional view of an implant; the figure 12 illustrates a cross-sectional view of a healing element fixed to an implant according to the embodiment of the invention; the Figures 13 and 14represent 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 the embodiment of the invention; the figure 15 illustrates a cross-sectional view of a healing assembly comprising a healing element surrounded by gingiva and fixed in an implant according to the embodiment of the invention; the Figures 16, 17 and 18 represent two schematic views of a cross-section of a gum in which a healing element is fixed according to the embodiment of the invention; the figure 19 represents the upper and lower teeth in a top view; the Figure 20 represents a view of the teeth according to a justa-gingival section; the figure 21 represents a horizontal section of the dentition at the justa-gingival level, as well as the corresponding healing elements retained according to the embodiment of the invention; the figures 22 to 24represent cross-sectional views through a vertical median plane according to the embodiment of the invention; the Figures 25 and 26 represent respectively perspective views of a dental restoration assembly comprising an impression-taking element according to an embodiment of the invention; the figure 27 represents a longitudinal cross-sectional view of the dental restoration assembly comprising an impression-taking element according to the embodiment of the invention; The figure 28 represents a perspective view of an intermediate phase of associating a healing element with a pillar base according to a variant of the embodiment of the invention; the figures 29A, 29B and 29C represent respectively perspective views of a dental restoration assembly comprising a healing element, an implant, and a removable support for a prosthesis according to a variant of the embodiment of the invention; the figure 29Drepresents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 29A to 29C according to the variant embodiment of the invention; the figures 29E, 29F and 29G represent respectively perspective views of the dental restoration assemblies depicted on the figures 29A to 29C with the removable support of a prosthesis that is disassembled from the healing element according to the variant of the embodiment of the invention; the figure 29H represents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 29F to 29G depending on the variant of the embodiment of the invention; the figures 29I, 29J, 29K, 29L and 29M represent respectively perspective views of the removable support of a prosthesis comprising the receiving part of the apex prosthesis according to the variant of the embodiment of the invention; the figure 30Arepresents a perspective view of a dental restoration assembly comprising a healing element, an implant and a removable prosthesis support, as well as a locking element according to another embodiment of the invention; the figure 30B represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 30A according to the other variant of the embodiment of the invention; the figure 30C represents a perspective view of the entire dental restoration depicted on the figure 30A with the removable support of a prosthesis that is disassembled from the healing element according to the other variant of the embodiment of the invention; the figure 30D represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 30C depending on the variant of the embodiment of the invention; the figures 30E, 30F, 30G and 30Hrepresent respectively perspective views of the removable support of a prosthesis comprising the receiving part of the apex prosthesis according to the other variant of the embodiment of the invention; the Figures 30I and 30J represent a perspective view of the complete dental restoration in Figures 30A to 30D, 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 the other variant of the embodiment of the invention; figures 30K to 30M each represent a longitudinal cross-sectional view of the entire dental restoration depicted on the Figures 30I and 30J according to the other variant of the embodiment of the invention; the figures 31A, 31B and 31Crepresent respectively perspective views of a dental restoration assembly comprising a healing element, an implant and a removable support for a prosthesis according to yet another embodiment of the invention; the figure 31D represents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 31A to 31C according to the variant embodiment of the invention; the figures 31E, 31F and 31G represent respectively perspective views of the dental restoration assemblies depicted on the figures 31A to 31C with the removable support of a prosthesis that is disassembled from the healing element according to the variant of the embodiment of the invention; the figure 31H represents a longitudinal cross-sectional view of the dental restoration assemblies depicted on the figures 31F to 31G depending on the variant of the embodiment of the invention; the figures 31I, 31J, 31K, 31L and 31Mrepresent respectively perspective views of the removable support of a prosthesis comprising the receiving part of the apex prosthesis according to the variant of the embodiment of the invention; the figure 32A represents a perspective view of a dental restoration assembly comprising a healing element, an implant and a removable prosthesis support as well as a locking element according to yet another embodiment of the invention; the figure 32B represents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 30A according to the other variant of the embodiment of the invention; the figure 32C represents a perspective view of the entire dental restoration depicted on the figure 32A with the removable support of a prosthesis that is disassembled from the healing element according to the other variant of the embodiment of the invention; the figure 32Drepresents a longitudinal cross-sectional view of the entire dental restoration shown on the figure 32C depending on the variant of the embodiment of the invention; the figures 32E, 32F, 32G and 32H represent respectively perspective views of the removable support of a prosthesis comprising the receiving part of the apex prosthesis according to the other variant of the embodiment of the invention; the Figures 33 and 34 represent respectively perspective views from below and above of a healing element according to a variant of the embodiment of the invention; figures 35A to 35C and 36A to 36C represent respectively top and bottom perspective views of a series of healing elements according to the variant of the embodiment of the invention; the figures 37A to 37C, 38A to 38C and 39A to 39C represent respectively side, top and bottom views of a series of healing elements according to the variant of the embodiment of the invention; the figure 40illustrates a cross-sectional view of a healing element arranged in an implant according to the variant of the embodiment of the invention; the figure 41 illustrates a side view of a healing element arranged in an implant according to the variant of the embodiment of the invention; the Figures 42 and 43 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 the variant of the embodiment of the invention.

[0011] In the description that follows, the same references will be used for all variants of implementations to designate the same components, or even their equivalents, in order not to burden the text and to facilitate its reading.

[0012] In the embodiment shown in the Figure 1A to 1JA dental restoration assembly 1 comprises a healing element 10, suitable for connection with a dental implant 60 (which will be more simply called implant 60), and a removable support 2 for a prosthesis, in particular a terminal prosthesis 25, which we will also sometimes simply call a "support". Such a dental restoration assembly participates in the implementation of a dental restoration procedure which may comprise two phases: A first phase, known as the healing phase, during which one or more implants are integrated into the patient's bone structure through osseointegration, and during which the specific healing element is used, as will be detailed later. During this first phase, a temporary or even definitive abutment may be fixed to the healing element(s) via the removable support, particularly for the time required for healing. A second phase, the restoration itself, follows, during which a definitive abutment is placed on the implant(s) via a restorative abutment or directly onto the healing element(s) via the removable support.

[0013] As a side note, there are many situations in which it is not recommended to place a prosthesis during the healing process, specifically during the first phase mentioned above. While such a prosthesis offers an aesthetic advantage, it also carries the risk of placing stress on a healing implant, which can be detrimental. Therefore, the healing element must be suitable for use alone in the mouth during the first phase, but also for situations where adding a prosthesis is preferred. 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.

[0014] The 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.

[0015] The healing element 10, sometimes called 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, either directly or indirectly, preferably with a removable attachment.

[0016] As illustrated on the figures 2 to 24 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 connecting device. The healing element includes a through opening 11 oriented along an axis and intended to receive a screw 40 screwed into the threaded opening 21 of the implant 60, as represented by the Figures 13 and 14 In other words, the healing element 10 includes, in particular, an opening in a surface opposite 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 opening 11 coincides with the longitudinal axis L of the implant. This assembly is illustrated in particular by the Figures 12 And19 The 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.

[0017] 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.

[0018] 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 indirectly attached 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 51 which is connected to the implant 60, as shown by the figure 28In this configuration, implant 60 is secured to the bone, and the abutment base is fixed to implant 60 so that its flange is positioned at the boundary between the bone and the gingiva. The healing element covers the abutment base up to the flange, so that the gingiva is in almost exclusive contact with the healing element 10. It should be noted that the removable prosthesis support is preferably separate from the healing element, and possibly also from the abutment base it contains in the case of the alternative described above. In particular, the removable support does not participate in any impression-taking function, digital or otherwise. It is the healing element alone (possibly on an abutment base), after removal or in the absence of a removable prosthesis support, that is used for taking impressions, including digital impressions by scanner.

[0019] 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.

[0020] 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 of the end face, while extending its surface to form a continuous final surface, as is particularly visible on the figure 12 .

[0021] 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.

[0022] The healing element 10 is designed to be housed within the incised gingiva after implant placement. The final configuration is shown on the figure 18In 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 healing and the smooth fabrication of the final apex prosthesis.

[0023] 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 16 to 18To 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.

[0024] 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 notably characterized 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 12 , 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.

[0025] To understand the approach taken, the figure 19illustrates a top view of the upper and lower teeth and the Figure 20 illustrates a cross-sectional view at the level of the justogingival plane PJ of a dentition, represented on the figure 15 , 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, or more precisely trapezoidal.

[0026] 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 21This 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.

[0027] In the example of implementation chosen and illustrated by the figure 21Healing 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.

[0028] 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 is particularly illustrated by the figures 4A to 8A , the healing element B by the figures 4b to 8b and the healing element C by the figures 4c to 8cTo 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.

[0029] As is apparent from figures 4A to 7C 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 19 However, they are slightly domed, with a central part 145, particularly visible on the figures 6A to 6C , intended to rise higher beyond the gum than its peripheral parts 146.

[0030] 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.

[0031] 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 8A to 8C give orders of magnitude of the dimensions of these healing elements, in millimeters.

[0032] Naturally, this roughly trapezoidal shape features rounded corners and curved sides to ensure it does not impinge on the gums. 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. As a note, when the healing element is fixed alone on an implant by means of a screw 40, the head 41 of the screw completes the terminal surface 14, which becomes substantially continuous, even at the level of the opening 11. Thus, this terminal surface closed by the screw head then has substantially the property of a continuous surface, without reliefs, and / or without hollow part, and / or without groove, and / or without edge, and / or without asperity.This architecture optimizes the use of a single healing element. In addition, sealing is ensured at the interface between the screw head 41 40 and the terminal surface 14.

[0033] 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.

[0034] 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.

[0035] 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 7A to 7C , and more specifically on the figure 19Considering 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 when 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 15 .

[0036] 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 midline of the two sides 141, 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 cutting plane P defined previously, 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 shape, allowing the healing element used to be recognized and possibly its orientation to be determined, thus fulfilling a second function that will be detailed later.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] As we saw previously, this dental restoration assembly 1, comprising a healing element 10 suitable for connection with a dental implant 60, also includes a removable support 2 for a prosthesis 25. For this purpose, this removable support 2 includes a receiving portion 4 for a temporary or permanent apex prosthesis 25 (visible on the figure 1B). 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 .

[0041] 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 2 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 2 of the healing assembly during the fabrication of the apex prosthesis 25 on the removable support 2, 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.

[0042] In the illustrated embodiment, the removable support 2 is a single-piece component with a central, generally cylindrical, through hole 19 extending longitudinally from one end of the removable support 2 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 a predominantly frustoconical or cylindrical shape and has an outer surface provided with several retention elements 24 for a connecting element of the apex prosthesis 25 to the receiving portion 4 and thus to 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 2, defined at the level of this second component 7b, includes a wall that is wholly or partially threaded.

[0043] In this removable support 2, 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 2 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 2 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 2 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.

[0044] In this removable support 2, 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.

[0045] In this embodiment, the dental restoration assembly 1 may include a locking element 20a, 20b for stiffening the removable support 2, 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 1J, this locking element 20a, 20b can be a rod 20b, 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 1. Such a locking element 20a, 20b is intended to be inserted into the dental restoration assembly 1 by passing through the through hole 19 of the removable support 2 and entering 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 locking function of the assembly of the removable support 2 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 1, 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.

[0046] In addition to the advantages described above, the healing element 10 enables the implementation of an advantageous restorative procedure, including the fabrication of a final dental prosthesis and abutment, with minimal trauma to the gum tissue. Indeed, it is possible to obtain a digital or physical impression of the area to be restored without removing the healing element from the mouth, thus avoiding any impact on the gum. Therefore, in addition to its primary healing function, detailed previously, the healing element fulfills a second function during the restorative procedure, allowing for the advantageous definition of the shape of the restorative abutment and / or prosthesis before its removal. This function complements its primary healing function, as it prevents further trauma to the gum tissue after healing, ensuring a chosen, anatomically advantageous shape.

[0047] For this purpose, at the end of the healing phase of the dental restoration procedure, a practitioner can take a digital impression of the patient's mouth, without removing the healing element (the cap).

[0048] The scanning data, obtained by any device such as an oral scanner, is automatically transmitted to a computer equipped with dental restoration software. This software has a human-machine interface, through which an operator can indicate the cap model used, or more generally the reference of the healing element, and possibly the implant and / or abutment base used.

[0049] From the scan data, software automatically determines the axis of the healing element by geometric construction, for example, by identifying the center 15 of the cap and the direction perpendicular to the terminal surface 14 passing through this center 15. Through this construction, it can automatically determine the axis of the implant without having to visualize it directly. This is because the healing element is advantageously aligned with the implant, its axis thus coinciding with that of the implant.

[0050] Next, since the geometry of the healing element corresponds to a unique positioning around its axis 18, or around the longitudinal axis L of the abutment base, to respect the oral environment and in particular the geometry of the gingiva towards the inside of the mouth (lingual side), which differs from its geometry towards the outside (vestibular side), it is possible to deduce from its orientation the orientation of the axis of the connection device with the implant, for example, the connection device 3 of the abutment base with the implant: this allows the positioning of the implant connection device to be automatically deduced, without having to visualize it directly. As an example, it is possible to require during this construction that one of the parallel sides of the trapezoidal shape of the visible surface 14 of the cap be parallel to one side of the hexagon of the implant fixation device.

[0051] Finally, if healing elements of varying heights exist, their height must be determined to perfectly position the invisible implant. A first approach could be to create healing elements of different colors for different heights.

[0052] A second approach involves placing an indicator on the visible surface 14 of the healing element to indicate its height. This indicator could consist of numbers and / or letters and / or any symbol and / or colors and / or laser markings and / or one or more barcodes and / or Data Matrix codes and / or any identification code. A third approach could involve creating healing elements with a different visible surface 14 depending on their height. For example, caps A, B, C, and D could maintain the same shape but with slightly larger dimensions for greater heights, thus allowing them to be automatically differentiated and their height determined.

[0053] As an alternative or complementary implementation, an operator enters the reference of the healing element via a human-machine interface. This allows the software to retrieve the characteristics of this healing element, such as its height, center, and / or axis, from a database stored in electronic memory that the operator can consult. Alternatively, the software can automatically recognize the healing element based on its geometric characteristics, without requiring manual entry of its reference. An operator can assist the software in correctly positioning a marker on the actual cap—that is, in recognizing its actual positioning—by entering one or more points on the emerging surface of an image obtained through the digitization step mentioned above and displayed to the operator on a human-machine interface screen.

[0054] Using the digitized data, and potentially with the help of points on the surface of the healing element manually entered by an operator, the software can associate the virtual healing element from its library with the digitized oral environment, replacing the actual healing element to obtain a more accurate digital reproduction. It should be noted that the shape of the actual healing element determines its orientation, particularly due to its asymmetrical form, as mentioned previously. The virtual healing element can be perfectly positioned on the digital impression, either automatically or, if necessary, through operator intervention via a user interface that allows visualization of both the oral impression and the healing element.This perfect positioning of the virtual healing element allows us to deduce all the surrounding geometries, from the known references stored in the database associated with the precise healing element considered, including the position of implant 60 and the geometry of the healed gingiva without the presence of the healing element 10, nor of a possible abutment base in the non-monobloc embodiment variant.

[0055] When the restoration software has accurately repositioned the hidden implant, it deduces from this knowledge the final geometry of the restoration abutment to be manufactured, which must be fixed to the implant and occupy the entire gingival volume defined by the healing element, and then the geometry of the dental prosthesis intended to be fixed to this abutment, in a known manner.

[0056] As a side note, this restoration process can be done entirely digitally, therefore virtually, or it can involve phases of constructing a model in plastic or plaster. In the latter case, a physical impression, for example in silicone, can be taken, and a plaster cast can be poured into the impression to create the master model, that is to say, a replica of the dental arch to be restored, which is then scanned in the laboratory to reconstruct a digital image.

[0057] Ultimately, the method of implementation is advantageous in that it offers a healing element that combines three complementary functions: The healing function: for this purpose, it includes a surface around which the gum heals. In the described embodiment, this healing is advantageous because it is anatomical, as previously described; the impression-taking function: it allows for a trauma-free impression at the end of the healing phase, advantageously without needing to remove it from the patient's mouth. Note that this impression is necessary to fabricate the final restoration. In the described embodiment, this impression is digital and can be fully or partially automated; the prosthesis retention function: it allows for the fixation of a 25-unit upper prosthesis, whose primary function is aesthetic. To this end, it advantageously has a shape that generally imitates the shape of a tooth.

[0058] Combining these three functions on a single element therefore provides many complementary advantages, in a flexible way.

[0059] Naturally, the invention is not limited to the embodiment described above. The healing element can thus have other means of implementing the three functions summarized above. According to a simplified embodiment, the healing surface can be cylindrical, as shown by the figures 33 to 43 Such an approach no longer allows for the formation of an anatomical healing surface but offers the advantage of simplicity, enabling the standardization and easy fabrication of this healing surface, and therefore, more broadly, of the healing element. Due to its cylindrical shape, the healing surface can no longer fulfill the second function of taking an impression. In an embodiment such as that represented by the figures 35 to 39, it is possible to provide a series of healing elements including a healing surface of different, standard diameters.

[0060] To overcome this drawback, 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 instead to proceed with an automated digital impression as described above, without removing the healing element 10.

[0061] 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.

[0062] 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, notably 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 one is present, and indirectly about the implant, such as their orientation, which may be related to the orientation of the healing element.

[0063] Without limiting the freedom in designing informational markers, each informational marker belongs in particular to one of the following types: a negative informative marker 54, notably in depression in one of the surfaces of the healing element 10, particularly on its emergent surface, as shown on the Figures 33 to 40; a positive information marker, in particular embossed on one of the surfaces of the healing element 10, particularly on its emergent surface; an information marker of a particular and identifiable shape formed in one of the surfaces of the healing element 10, in particular polygonal or linear; an information marker consisting of a readable numeric value or a readable identification code such as a barcode and / or a datamatrix 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.

[0064] This marker(s) are particularly necessary in this simplified embodiment with a cylindrical healing surface. However, at least one marker could alternatively be implemented in other embodiments to provide additional or redundant information during impression taking.

[0065] The previous variant was described with a maximum simplicity approach for the surface fulfilling the healing function. According to a contrasting variant, this surface could be custom-designed for each patient, and therefore unique, with the aim of achieving the most anatomical shape possible—that is, the one best suited to the specific mouth of the patient in question. In this case, a database stored on electronic memory is created, containing numerical data virtually representing the shape of the healing element, along with at least one patient identification data point.This allows for a digital impression to be taken at the end of the healing process, by superimposing the virtual healing element from the database onto the digitized healing element. This can be done, for example, with operator assistance via a human-machine interface, to automatically identify the hidden space in the gum tissue above the implant, which is not directly visible with a scanner. This impression-taking procedure is similar to the one described in detail previously with reference to [reference missing]. figures 2 to 21 , without automatic recognition of the healing element but by its recognition from an identification data stored in a database.

[0066] In the previous variants involving digital fingerprinting, it is therefore important to clearly differentiate between a solution using a marker and one without using 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 an anatomical characteristic to dispense with a marker. Recognition is more difficult with this alternative, but it has the advantage of not altering the ideal shape for healing for the secondary purpose of forming an indicator.Therefore, this alternative solution without markers, or with fewer markers (than a solution based solely on markers), is advantageous and preferred.

[0067] The embodiment and its variations allow for the digital taking of impressions, for example, using an oral scanner. In the variation described below, this impression could be taken from a traditional physical impression, also known as a manual impression, in which case markers or other specific features are no longer required. It should be noted that the different variations of the embodiment are complementary and could be combined.

[0068] Thus, according to another variant of the embodiment represented by the figures 25 to 27The second impression-taking function is implemented using a removable impression transfer element 42, also called an impression tray. This impression transfer element 42 is provided with a fixing portion 44 comprising at least one anchoring element 47b and a connecting portion 45.

[0069] This fixation portion 44 of the impression transfer element 42 is capable of cooperating with an impression material. Such an impression taking makes it possible to transfer / transpose into the impression material the exact position of the healing assembly formed by the implant 60 and the healing element 10 in the patient's jaw, but also the precise relief of the gingiva defined around the healing element 10, in particular its lateral surface 13.

[0070] The impression tray is a tool used to record the volumes of the patient's dental arches, particularly those of the upper and lower jaws, by taking an impression in a suitable impression material, such as a suitable paste. This impression tray is therefore designed to hold the necessary paste in the patient's oral cavity for these recordings. This paste can preferably be made of silicone, alginate, hydrocolloid, etc.

[0071] This impression tray 42 is a one-piece unit made of metal or plastic, preferably disposable, and may be of the "closed-surface" type. It must be rigid to prevent any deformation during insertion or removal from the patient's mouth. This impression tray is adapted to the anatomy of the patient's mandible and maxilla, whether the patient has teeth or not.

[0072] This impression tray may include a gutter in the general shape of an arch with a central curved section extended on either side by two lateral branches. This gutter may be formed of a bottom wall bordered longitudinally by two lateral walls, inner and outer, so as to define a receiving groove that can be filled with the impression material.

[0073] When, as in the present embodiment, the fixing part 44 of the impression holder 42 includes several anchoring elements, in particular two, these are then arranged in this part 44 by being superimposed on one another.

[0074] In an unrepresented variant, impression holder 42, unlike the one described and represented, which is a single piece, could comprise two separate parts.

[0075] In addition, the connecting portion 45 of the impression tray 42 protrudes into a central region of the inner face 49a of a lower portion 47a. This connecting portion 45 is specifically designed to be inserted into the through-hole 11 from the top of the healing element 10. As a side note, this connection can be made in a similar manner to the connection of the prosthetic support 2 with the healing element 10 described with reference to the figures 1A to 1J Such a connecting portion 45 includes at its free end a fastening element 48, for example, a clip or threaded part. This fastening portion 48 is adapted to cooperate with the corresponding part defined in the wall of the through-hole 11 to achieve this mechanical connection between the removable impression tray 42 and the healing element 10.

[0076] Thus, at the end of the healing process, the support 2 bearing the prosthesis 25 is removed from the healing element 10, and the impression tray 42 is placed in its position to take the impression. In this embodiment, the healing surface can take any shape, including those described previously.

[0077] In addition, the healing element can support a prosthesis 25, offering the patient a temporary aesthetic solution before the final restoration. For this purpose, as previously described, the healing element 10 is designed for use with a prosthesis support 2.

[0078] It should be noted that the end of this removable support 2 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 2 with the healing element 10.

[0079] In unillustrated variants, the removable support 2, unlike the support in the first embodiment which is a single piece, may comprise two separate parts. The first part corresponds to the receiving portion 4 of the removable support 2. 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, and the first component 7a has inner and outer faces 9a, 9b and a peripheral wall connecting these faces. In this configuration, the second component 7b protrudes at 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.

[0080] In such a variant of the removable support 2, the second part forms the connecting part 5, which is a screw having a head and a shank, capable of being inserted into the bore provided in the receiving part 4 when mounting the removable support 2 on the healing element 10. Thus when the two parts are assembled together to form the removable support 2 by being mounted on the healing element 10, the connecting part 5 protrudes in 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 2 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 a tapped portion defined in the wall of the through opening 11, for the creation of this mechanical connection between the removable support 2 and the healing element 10.

[0081] In another variant of the embodiment illustrated on the figures 29A to 29MThe removable support 2 is a single piece. In this removable support 2, 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 comprises an outer surface provided with several retention elements 24 for a connecting element of the apex prosthesis 25 onto the receiving portion 4 in a manner similar to the embodiment described previously with reference to the figures 1A to 1J It should be noted that each retention element 24 can also be a marker providing information on a maximum height of adjustment of the apex prosthesis and / or support.

[0082] In this removable support 2, 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 2 and to reduce to zero any translational play between the healing element 10 and the removable support 2.

[0083] The connecting portion 5 of this removable support 2 is specifically designed to be inserted into the through opening 11 of the healing element 10 when the removable support 2 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.

[0084] This connecting part 5 further includes an anti-rotational element 16 for good retention of the removable support 2 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 2 is assembled to the healing element 10.

[0085] THE figures 30A to 30Millustrate another variant of the embodiment, in which the removable support 2 is substantially similar to that of the previous variant. The only difference between these two embodiments is the presence of a through hole 19 in the removable support 2 of this other embodiment. Indeed, the removable support 2 is a single-piece component provided with this central, generally cylindrical through hole 19 extending longitudinally through the body from one end to the other of the removable support 2. A portion of this through hole 19 of the removable support 2, defined in the second component 7b, includes a wall that is wholly or partially threaded. In this configuration, a clipping member is included at one end of this through hole 19 of this removable support 2, comprising several flexible fins, in particular two, thus defining this end of the through hole 19.

[0086] In this alternative embodiment, the dental restoration assembly 1 may include a locking element 20a for stiffening the removable support 2, 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 , 30C, 30D and 30Kat 30M. The head of this locking element 20a is then included in the first end of the body of this locking element 20a and has a threaded portion that is suitable for cooperating 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 tapped. Indeed, this wall of the through hole 19 can include at least one thread 52a, 52b; more precisely, in a first variant of the support element 2, this wall includes a single thread 52a defined in a lower portion 39a of the second component 7b, and in a second variant of this support 2, the wall includes two threads 52a, 52b 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 2, the remaining part 52c of this wall of the through hole 19, is not tapped.A locking element 20a is designed to be inserted into the dental restoration assembly 1 by passing through the hole 19 in the removable support 2 and the through-hole 11 in the healing element 10. This actuates the flexible wings that form a clipping mechanism, causing them to move from the rest position to the constrained position. In this constrained position, a larger portion of these wings is then arranged in the groove defined in the wall of the through-hole 11, resulting in a locking of the removable support 2 with the healing element 10, or even with the entire 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-hole 11 allows for the partial disengagement of the wings from the 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 1 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 , 30C, 30D, 30K to 30MIts 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.

[0087] With reference to the figure 30K, 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 52c of the wall of the through hole 19 of the second variant of the removable support 2 corresponds to a screw assembly called "captive" which makes it possible to avoid accidentally dissociating the removable support 2 from the screw associated with it, for example this assembly makes it possible to avoid dropping the screw when handling this removable support 2.

[0088] More generally, the fastening element 8 of the connecting part 5 can therefore take various forms, including flexible fins. These fins are spaced apart by a gap resulting from a material cutout. Such fins are capable of elastically 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 connecting zone 6 in the healing element 10, with which they can cooperate to achieve fixation by clipping. Alternatively, any other mechanical fastening device is conceivable.

[0089] It is noted that in all these embodiment variants, the removable support 2 includes a 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 2 also coincides with the axis L of the implant 60 and the axis 18 of the healing element 10.

[0090] As previously discussed, the healing element may include a cylindrical healing surface 13. Thus, the figures 31A to 31M represent such a realization with a lateral surface 13 of cylindrical healing according to a variant which corresponds to that described with reference to figures 29A to 29M Similarly, the figures 32A to 32H represent a variant corresponding to that of figures 30A to 30H but with a cylindrical healing surface.

[0091] In these embodiments, the support 2 can be made of a plastic material suitable for medical use. In particular, this support 2 can be made from a polymer material, notably from a material such as PEEK, PMMA, or POM, to facilitate adjustments and bonding of the apex prosthesis 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 2 can be manufactured by machining and / or molding and / or additive manufacturing, in other words, by 3D printing.

[0092] Thus, the invention offers the possibility of creating a temporary upper apical 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. Alternatively, this prosthesis could be a permanent prosthesis.

[0093] As described, the prosthesis support 25 is advantageously mounted removably on the healing element 10, using a simple screw or clip fastening mechanism, thus facilitating all operations related to the fabrication of temporary and / or definitive upper dentures. Support 2 can therefore be easily removed from the patient's oral cavity for adjustments or polishing of the upper denture and / or support 2, or for other operations related to the fabrication of definitive upper dentures, such as taking impressions. It should be noted that this removability allows only the support to be removed; the healing element remains securely in the mouth, fixed to an implant. The connection between the support and the healing element can be different.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 form a terminal surface poorly suited to remain alone in the mouth. As a further note, it is naturally apparent in all these embodiments that the support is separate from the healing element. Moreover, it is suitable for direct attachment to this healing element.

[0094] In addition, such a support 2, along with a supported apex prosthesis 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 them from converging, particularly during the osseointegration phase of the implant. As a point of 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.

[0095] Advantageously, such a removable support 2 prevents any damage to the emerging surface of the healing element, while still allowing for the fabrication of a crown 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 based on the shape of the emerging surface of the healing element.

[0096] The invention is not limited to the embodiments described, and includes, for example, combinations of components from the embodiments described above. In particular, the dental restoration assembly can be a single unit, from the connection to an implant to the prosthesis 25, or composed of several separate elements, as mentioned previously. Thus, the healing element 10 may or may not include the connection for direct attachment to an implant, and may or may not include the connection area with a prosthesis 25, or even the prosthesis 25 itself. In general, the healing element comprises an upper portion for connection to a crown and an impression portion.

[0097] The invention also relates to a restoration system that implements the restoration process mentioned above. It comprises a healing element as described previously, a digital impression element, including a scanner, and at least one computer that processes the images from the digital impression for automatic recognition, based on the anatomical shape of the healing unit and / or by recognizing at least one marker, of the type of healing element used. This system utilizes the healing element in its second configuration, in which its protruding portion is visible in the oral cavity, uncovered. This system effectively uses the healing element in a second configuration in which any prosthesis mounted on a removable support is removed: the oral cavity with only the healing element is digitized.

Claims

1. Dental restoration assembly (1), comprising a healing element (10) and a support (2) for a prosthesis (25), this support (2) being attached removably to the healing element (10), the healing element (10) being able to be connected directly or indirectly to a dental implant (60) and comprising a lateral surface (13) intended for at least partial integration within a gum in order to shape the gum as the latter heals, said healing element (10) comprising a connection zone (6) defined in a through-opening (11) and able to receive the removable attachment of the support (2) of a crown prosthesis (25) and optionally able to receive the removable attachment of an impression-taking element (42), and comprising an end surface (14) which, together with part of the lateral surface (13), forms an emergent surface which is intended to remain outside the gum and is asymmetrical with respect to at least one perpendicular median plane in order to present an anatomical and recognizable shape for forming the part for taking a digital impression, and the prosthesis support (2) comprising a receiving part (4) for a crown prosthesis (25) and a connection part (5) configured to cooperate with the connection zone (6) of the healing element (10), said connection part (5) of the support (2) and the connection zone (6) of the healing element (10) comprising: - a male clipping component of said connection part (5) cooperating with a recess / groove defined in a wall of the through-opening (11) of the healing element, for the purpose of attachment by clipping between the support (2) and the healing element (10), or - a threaded part of said connection part (5) cooperating with an internally threaded part defined in a wall of the through-opening (11) of the healing element for the purpose of mechanical connection between the support (2) and the healing element (10).

2. Dental restoration assembly (1), comprising a healing element (10) and a support (2) for a prosthesis (25), this support (2) being attached removably to the healing element (10), the healing element (10) being able to be connected directly or indirectly to a dental implant (60) and comprising a cylindrical lateral surface (13) and at least one information marker forming a part for taking a digital impression and permitting the identification of at least one characteristic of the healing element (10) and / or indirectly of an abutment base (51) and / or of a dental implant (60) during a step of taking a digital impression, and in that said healing element (10) comprises a connection zone (6) defined in a through-opening (11) and able to receive the removable attachment of the support (2) of a crown prosthesis (25) and optionally able to receive the removable attachment of an impression-taking element (42), and the prosthesis support (2) comprising a receiving part (4) for a crown prosthesis (25) and a connection part (5) configured to cooperate with the connection zone (6) of the healing element (10), said connection part (5) of the support (2) and the connection zone (6) of the healing element (10) comprising: - a male clipping component of said connection part (5) cooperating with a recess / groove defined in a wall of the through-opening (11) of the healing element, for the purpose of attachment by clipping between the support (2) and the healing element (10), or - a threaded part of said connection part (5) cooperating with an internally threaded part defined in a wall of the through-opening (11) of the healing element, for the purpose of mechanical connection between the support (2) and the healing element (10).

3. Dental restoration assembly (1) according to Claim 1 or 2, characterized in that the healing element is designed to occupy a first configuration, in which it is connected to a separate and removable prosthesis support (2), and a second configuration, in which it is fixed on its own to an implant by a screw (40) and not covered by a support (2).

4. Dental restoration assembly according to one of the preceding claims, characterized in that parts of the emergent surface of the healing element (10) that are respectively intended for a positioning oriented towards the inside and towards the outside of the mouth have a different shape.

5. Dental restoration assembly according to Claim 1 or either of Claims 3 and 4 in their dependence on Claim 1, 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) presents: - 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 for a positioning oriented towards the outside of the mouth and larger than a part intended for a positioning oriented towards the inside of the mouth.

6. Dental restoration assembly according to Claim 1 or any one of Claims 3 to 5 in their dependence on Claim 1, characterized in that the emergent surface of the healing element has an identifiable three-dimensional shape forming a part for taking a digital impression, automatically permitting its recognition, its positioning and / or its orientation and, indirectly, the positioning and orientation of the implant, without a marker.

7. Dental restoration assembly according to Claim 1 or any one of Claims 3 to 6 in their dependence on Claim 1 according to any one of the preceding claims, characterized in that the lateral surface (13) is custom-designed for healing that is as anatomical as possible, and in that its shape is unique and able to form a part for taking a digital impression.

8. Dental restoration assembly according to one of the preceding claims, characterized in that the healing element is in one piece and comprises at its lower end, and on an outer periphery, an interface able to cooperate with an interface of an implant (60), for its direct attachment to an implant, or in that it comprises an interface for cooperating with an abutment base (51) forming an intermediate element for indirect attachment to an implant (60).

9. Dental restoration assembly according to one of the preceding claims, characterized in that it additionally comprises a screw (40), such that the healing element is able to occupy a second configuration, in which it is attached on its own to an implant by a screw (40) and not covered by the prosthesis support (2), and characterized in that in this second configuration the head (41) of the screw (40) is recessed in the healing element and does not protrude from the end face (14) of the healing element (10).

10. Dental restoration assembly according to the preceding claim, characterized in that the end surface (14) and / or the emergent surface of the healing element (10) has: - a non-flat, curved surface; and / or - a convex surface; and / or - a surface without roughness, or characterized in that the end surface (14) and / or the emergent surface of the healing element (10) completed by the head (41) of screw (40), when the healing element (10) is attached on its own by a screw (40), has a continuous surface, without relief, and / or without a hollow part, and / or without a groove, and / or without a ridge, and / or without roughness, and / or is convex.

11. Dental restoration assembly according to either of Claims 9 and 10, characterized in that said through-opening (11) of the healing element extends along a longitudinal axis suitable for its attachment to an implant by an attachment screw (40), and in that the attachment screw (40) has a colour or a shape forming a marker for indicating a geometric parameter of the healing element, such as its height.

12. Dental restoration assembly (1) according to one of the preceding claims, characterized in that it comprises a prosthesis (25) attached removably to the healing element (10).

13. Dental restoration system, characterized in that it comprises a dental restoration assembly (1) according to one of the preceding claims, an element for taking a digital impression, in particular a scanner, and at least one calculator which exploits the images from the digital impression-taking for the purpose of automatic recognition, based on the anatomical shape of the healing assembly and / or by recognition of at least one marker, of the type of healing element used, from images of the healing element (10) in its second configuration, in which its emergent part is visible in the oral space and not covered by a support.