METHOD FOR PRODUCEING A BASE FOR RECEIVING A DENTAL PROSTHESIS

Description

DOMAINE TECHNIQUE DE L'INVENTION

[0001] The present invention relates to the field of dental restoration, and more particularly to a base for receiving a dental prosthesis on a dental implant.

[0002] A titanium or titanium alloy base is known for receiving a dental prosthesis by bonding onto a dental implant, extending in a longitudinal direction between a proximal end and a distal end, comprising: a proximal section shaped to be received in or on a dental implant, a distal section shaped to receive a dental prosthesis as support, said distal section having a receiving surface intended to receive said dental prosthesis by bonding.

[0003] To improve the retention of the dental prosthesis by bonding to the receiving surface of the base, said receiving surface is usually subjected to an abrasive surface treatment, such as sandblasting.

[0004] A primary drawback is that this abrasive surface treatment, particularly sandblasting, is complex and time-consuming. It is essential to carefully protect the surfaces of the base not intended for bonding, especially the surface that will come into contact with soft tissues (gums) and the edges defining the boundaries of the receiving surface, which must remain intact to ensure perfect continuity between the shape of the base and the dental prosthesis (in order to avoid discontinuities that could lead to the accumulation of tartar and bacteria).

[0005] Furthermore, the outer surface of the portion of the base intended to be surrounded by the patient's soft tissues (the so-called "transgingival" portion of the base) is often subjected to a specific surface preparation or treatment designed to promote healing and / or soft tissue adhesion, or to limit the formation of dental plaque. Sandblasting the receiving surface of the base, intended to receive the dental prosthesis by bonding, can damage the specific surface preparation or treatment applied to the "transgingival" portion of the base.

[0006] A second drawback is the need for thorough cleaning of the base after abrasive surface treatment to avoid leaving any blasting media. Blasting media can cause inflammation of the patient's soft tissues and / or interfere with the proper connection of the base to the dental implant or prosthesis.

[0007] A third drawback is that abrasive surface treatments, such as sandblasting, darken the shade of the abutment's receiving surface. Dental prostheses, most often made of ceramic, are translucent. The darkened shade of the receiving surface can therefore make the abutment more easily visible through the prosthesis. This is both unsightly and embarrassing for the patient, as the visual perception of the abutment by others reveals the prosthetic nature of the patient's tooth.

[0008] A fourth drawback is that a sandblasted base receiving surface must have a relatively large area to ensure sufficient bonding force. This often necessitates a relatively long and / or bulky distal section, which limits, or even prevents, the use of a screw channel in the prosthesis that is angled relative to the axis of a transfixation screw intended to secure the base to a dental implant.

[0009] The document US2016206408A1 describes a titanium or ceramic base for receiving a dental prosthesis, comprising a proximal section shaped to be received in a dental implant and a distal section with a receiving surface shaped to receive a dental prosthesis by bonding; said distal section comprising grooves machined by a cutting or crushing tool in said receiving surface.

[0010] The document US2019029786A1 describes a titanium base with grooves in its receiving surface shaped to receive a dental prosthesis. EXPOSE DE L'INVENTION

[0011] One problem proposed by the present invention is to design a manufacturing method for a base for receiving a dental prosthesis on a dental implant, which allows for improved retention of a dental prosthesis by bonding, but without resorting to sandblasting.

[0012] Simultaneously, the invention aims to provide a faster base manufacturing process that limits the risks of soft tissue inflammation and avoids creating infracsions and discontinuities that promote the accumulation of tartar and bacteria, and that limits the risks of alteration of the outer surface of the trans-gingival portion of the base.

[0013] According to yet another aspect of the present invention, a method for manufacturing a base is proposed which allows for a more satisfactory aesthetic result once the dental prosthesis is assembled on the base.

[0014] To achieve these and other objectives, the invention proposes a method for manufacturing a titanium or titanium alloy base for receiving a dental prosthesis on a dental implant, extending substantially in a longitudinal direction between a proximal end and a distal end, comprising: a proximal section shaped to be received in or on a dental implant and extending along a first direction of elongation, a distal section shaped to receive a dental prosthesis as support and extending along a second direction of elongation, said distal section comprising a receiving surface intended to receive said dental prosthesis by bonding; According to the invention, the receiving surface is textured at least partially by laser, by creating grooves in the receiving surface.

[0015] Laser texturing satisfactorily increases the retention force of the dental prosthesis by bonding it to the base against an extraction force applied in the longitudinal direction.

[0016] Increasing the retention force through bonding allows for a reduction in the receiving surface (the interface between the base and the prosthesis where the bond is applied). Reducing this surface is advantageous for limiting the size of the distal section and the overall size of the base. It is particularly beneficial to be able to reduce the height of the distal section when a screw channel in the prosthesis is required to be angled relative to the axis of the transfixation screw used to secure the base to a dental implant. Good results have been obtained with a receiving surface area of ​​less than 30 mm².

[0017] Laser texturing eliminates the need to mask off parts of the baseplate, saving valuable time and preventing accidental damage to certain areas (particularly at the edges of the receiving surface and the outer surface of the transgingival portion). No abrasive media is used, thus reducing the risk of soft tissue inflammation or discomfort during the connection. Finally, laser texturing does not darken the shade of the receiving surface.

[0018] Advantageously, the textured grooves form a grid. Such texturing can be easily automated and completed in a very short time (in particular, less than 15 seconds).

[0019] Preferably, the grid may have a substantially rectangular pattern, preferably substantially square.

[0020] Advantageously, texturing can be achieved by creating grooves oriented obliquely, preferably at approximately 45°, relative to the second elongation direction. This groove orientation significantly increases the retention force of the dental prosthesis bonded to the base against an extraction force applied along the second elongation direction.

[0021] Preferably, the grid can be made with a substantially square pattern with side lengths between 150 µm and 350 µm, preferably between 200 µm and 300 µm. Such a grid has given very good results in terms of the retention force of the dental prosthesis on the base.

[0022] Advantageously, the grooves have a depth of between 5 µm and 15 µm, preferably between 7 µm and 10 µm. Such a depth has proven to be a good compromise between the speed of texturing and the retention force of the dental prosthesis on the base.

[0023] Preferably, before or after texturing at least part of the receiving surface, a laser beam can be used to scan at least part of said receiving surface to induce yellowing of said at least part of said receiving surface. Such yellowing of at least part of said receiving surface makes the base even less visually perceptible through the dental prosthesis. The yellowing provides an aesthetically pleasing, natural tooth appearance.

[0024] Performed using a laser, the yellowing of the base can be carried out on the same workstation as the texturing. This is particularly advantageous, especially compared to anodizing, as it eliminates the need for a separate workstation to perform the coloring step. Various markings (manufacturer's logo, part number, batch number, etc.) can also be laser-engraved onto the base on the same workstation.

[0025] Advantageously, to further enhance the aesthetic appearance of the dental restoration, the entire receiving surface can be scanned with the laser beam to induce a yellowing effect. Even with this yellowing in addition to texturing, the production time remains very short: the applicant measured a production time, including yellowing and texturing, of only 12 seconds.

[0026] Preferably, it can be expected that: the base includes at least one rotational indexing element comprising a face or surface shaped to cooperate with the dental prosthesis in order to lock said base in rotation relative to the dental prosthesis around the second direction of elongation, said face or surface is devoid of texture.

[0027] The accuracy and reliability of the indexing have indeed proven to be even better when the face or surface of said indexing organ ensuring the indexing is not laser textured.

[0028] According to another aspect of the present invention, a method for the ex-vivo manufacture of a dental restoration kit comprising is proposed: a dental prosthesis, preferably made of a ceramic material, a titanium or titanium alloy base for receiving a dental prosthesis on a dental implant, during which: a base is provided obtained by implementing the manufacturing process as previously described, a dental prosthesis is provided, comprising an internal housing with a bonding surface intended to be attached and fixed by bonding to the receiving surface of the base, the dental prosthesis is attached and fixed to the base by bonding between the bonding surface of the dental prosthesis and the receiving surface of the base, the bonding surface of the dental prosthesis has not undergone any abrasive surface treatment, in particular by sandblasting.

[0029] Usually, to promote good retention by bonding the dental prosthesis to the base, the bonding surface of the dental prosthesis is subjected to an abrasive surface treatment, in particular by sandblasting.

[0030] The applicant has observed here that, surprisingly, the improvement in the retention by bonding the dental prosthesis to the base is such that it is possible to consider doing without treatment of the bonding surface of the dental prosthesis by means of an abrasive surface treatment, in particular by sandblasting.

[0031] Avoiding abrasive surface treatment of the denture's bonding surface proves particularly advantageous. Valuable time is saved since there is no need to mask off areas not to be treated, nor to intensively clean the abrasive media. Furthermore, it prevents accidental damage to certain areas of the denture, especially at the edges of the bonding surface, thus promoting good surface continuity between the base and the denture and limiting the risk of discontinuities that can lead to the accumulation of tartar and bacteria.

[0032] According to yet another aspect of the present invention, a base made of titanium or titanium alloy is proposed for receiving a dental prosthesis on a dental implant, extending substantially in a longitudinal direction between a proximal end and a distal end, comprising: a proximal section shaped to be received in or on a dental implant and extending along a first direction of elongation, a distal section shaped to receive a dental prosthesis as support and extending along a second direction of elongation, said distal section comprising a receiving surface intended to receive said dental prosthesis by bonding; According to the present invention, said receiving surface is at least partly textured by laser by carving grooves in said receiving surface.

[0033] Advantageously, the grooves of the texturing form a grid.

[0034] Advantageously, the grid can have a substantially rectangular pattern, preferably substantially square.

[0035] Advantageously, the grid may have grooves oriented obliquely, preferably at approximately 45°, relative to the second direction of elongation.

[0036] Advantageously, the grid can have a substantially square pattern with side lengths between 150 µm and 350 µm, preferably between 200 µm and 300 µm.

[0037] Advantageously, the grooves can have a depth of between 5 µm and 15 µm, preferably between 7 µm and 10 µm.

[0038] The grooves can be bordered, along their sides, by ridges of material with a height between 5 µm and 15 µm, preferably between 7 µm and 10 µm. Such grooves have allowed a significant increase in the retention force of the dental prosthesis on the base.

[0039] Preferably, at least part of said receiving surface has a yellow coloration.

[0040] Advantageously, the entire receiving surface may exhibit a yellow coloration.

[0041] Preferably, it can be expected that: the base includes at least one rotational indexing element comprising a face or surface shaped to cooperate with the dental prosthesis in order to lock said base in rotation relative to the dental prosthesis around the second direction of elongation, said face or surface is devoid of laser texturing.

[0042] According to yet another aspect of the present invention, a dental restoration kit is proposed comprising: a base obtained by the process as previously described or a base as previously described, a dental prosthesis, preferably made of a ceramic material, and comprising an internal housing with a bonding surface intended to be attached and fixed by bonding to the receiving surface of the base.

[0043] Advantageously, the bonding surface of the dental prosthesis has not undergone abrasive surface treatment, in particular by sandblasting. DESCRIPTION SOMMAIRE DES DESSINS

[0044] Other objects, features and advantages of the present invention will become apparent from the following description of particular embodiments, made in relation to the accompanying figures, among which: [ Fig.1 ] There figure 1 is a perspective view of a base according to the present invention; [ Fig.2 ] There figure 2 is a side view of the base of the figure 1 ; Fig.3 ] There figure 3 is a detailed view of part of the receiving surface of the base of the figure 1 , taken using a scanning electron microscope at a first magnification; [ Fig.4 ] There figure 4 is a detailed view of part of the receiving surface of the base of the figure 1 , taken using a scanning electron microscope at a second magnification; [ Fig.5 ] There figure 5 is a titanium alloy disc on which, in addition to a texture identical to that of the receiving surface of the base of the figure 1 , a yellow discoloration caused by laser treatment; [ Fig.6 ] There figure 6 is a cross-sectional view of a dental prosthesis intended to be attached and glued onto the base of the figure 1 ; Fig.7 ] There figure 7 is an exploded perspective view of a dental implant, part of a dental restoration assembly including the base of the figure 1 and the dental prosthesis of the figure 6 , and a screw; Fig.8 ] There figure 8 is a side and longitudinal section view of the dental implant, the dental restoration assembly, and the screw of the figure 7 ; And [ Fig.9 ] There figure 9 is a cross-sectional view of the entire dental restoration of the figure 8 . DESCRIPTION DES MODES DE REALISATION PREFERES

[0045] When identical numerical references are used in several figures, embodiments or variants of the invention, these numerical references designate identical or similar elements in each of the figures, embodiments or variants.

[0046] On the figures 1 et 2 is illustrated a base 1 made of titanium alloy (more precisely Ti6Al4V alloy) for receiving by bonding a dental prosthesis 2 ( figure 6 ) on a dental implant 3 ( figures 7 And 8 ).

[0047] Dental prostheses are preferably made of a ceramic material (such as zirconia or lithium disilicate), and are therefore translucent. Other translucent materials can also be used.

[0048] The base 1 extends substantially along a longitudinal direction II between a proximal end 1a and a distal end 1b. The base 1 comprises: a proximal section 4 shaped to be received in the dental implant 3 and extending along a first elongation direction II-II, a distal section 5 shaped to receive the dental prosthesis 2 as support ( figure 8 ) and extending along a second elongation direction III-III, said distal section 5 comprising a receiving surface 6 intended to receive said dental prosthesis 2 by bonding.

[0049] At least one of the first II-II and second III-III elongation directions coincides with the longitudinal direction II. Here, both the first II-II and second III-III elongation directions coincide with the longitudinal direction II. However, the first II-II and second III-III elongation directions may form a non-zero angle with each other, so that the base 1 is of the "angled base" type.

[0050] Receiving surface 6 is partially textured by laser.

[0051] The texturing includes grooves 7 cut into said receiving surface 6. The grooves 7 form a grid.

[0052] We can see more particularly on the figure 2 that the 7 grooves are oriented obliquely, approximately at 45°, with respect to the second elongation direction III-III.

[0053] The 7 grooves are particularly visible on the figures 3 et 4 which are views taken using a scanning electron microscope.

[0054] The grid formed by the 7 grooves presents a roughly square pattern.

[0055] The side length is between 150 µm and 350 µm, preferably between 200 µm and 300 µm. Here, the side length is approximately 250 µm.

[0056] The grooves 7 have a depth between 5 µm and 15 µm, preferably between 7 µm and 10 µm. Here, the grooves 7 have an average depth of about 9.5 µm.

[0057] We can see more particularly on the figure 4 that the grooves 7 are bordered, along their sides, by ridges 8a and 8b of material. These ridges 8a and 8b result from the excavation of the grooves 7 by means of the laser, and have a height between 5 µm and 15 µm, preferably between 7 µm and 10 µm. Here, it was measured that the ridges 8a and 8b have an average height of approximately 8 µm.

[0058] The bottom of the grooves 7 shows striations substantially perpendicular to the direction of elongation of the grooves 7. These striations result from the combination of the pulses and the advance of the laser source.

[0059] Texturing using grooves 7 made it possible to increase very significantly (by 87% compared to a sandblasted base) the retention force of the dental prosthesis 2 by bonding to the base 1 against an extraction force applied along the second elongation direction III-III (coinciding with the longitudinal direction II).

[0060] The grooves 7 were laser-cut using a laser marking / engraving machine marketed under the name "Combiline Advanced WT" by the Swiss company ROFIN BAASEL (recently acquired by the American company COHERENT, INC). This machine is equipped with a laser source marketed under the name "PowerLine F 20 varia" with an average maximum output power of 19 W.

[0061] To achieve grooved texture 7 of the figures 3 et 4 The following parameters were used: power: 50% frequency: 50 kHz speed: 500 mm / s pulse duration: 100 ns focus: 0% step size: 250 µm number of passes: 2.

[0062] To improve the aesthetic outcome of the dental restoration, at least part of the receiving surface 6 was treated with a laser to achieve a yellow coloration. This treatment (yellowing) can be performed before or after the grooves 7 have been prepared.

[0063] There figure 5 is a photograph of a titanium alloy disc (the same as that of base 1) on which the yellowing treatment has been carried out and in which grooves 7 identical to those of the figures 3 et 4 The yellowing treatment was deliberately carried out on a flat titanium alloy disc in order to clearly show the yellow colour obtained, without its visual appearance being affected by the convex nature of the receiving surface 6 of the base 1.

[0064] Such coloring of the receiving surface 6 helps to make the dental prosthesis 2 look like a natural tooth.

[0065] Preferably, the entire receiving surface 6 has a yellow coloration. To achieve this, the entire receiving surface is scanned with the laser beam.

[0066] The yellowing treatment is carried out using the same machine as that used for the groove texturing 7, but with different operating parameters, namely: power: between 50% and 90% frequency: between 100 kHz and 300 kHz speed: between 50 mm / s and 500 mm / s pulse duration: between 14 ns and 50 ns focus: 0% step: 50 µm number of passes: 1.

[0067] More specifically, the parameters that were used to achieve the yellow tint in the photograph of the figure 5 are : power: 70% frequency: 200 kHz speed: 400 mm / s pulse duration: 30 ns focus: 0% step: 50 µm number of pass(s): 1.

[0068] This is particularly noticeable on the figures 1 et 2 that the distal section 5 is essentially in the form of a cylinder with a circular cross-section extending along the second elongation direction III-III.

[0069] For positioning in a predetermined orientation of the dental prosthesis 2 on the base 1, the base 1 has a rotational indexing element 9. The rotational indexing element 9 allows the base 1 to be locked in rotation relative to the dental prosthesis 2 around the second elongation direction III-III (coinciding with the longitudinal direction II).

[0070] The rotating indexing organ 9 here comprises three flats arranged at 120 degrees to each other on the lateral surface of the distal section 5, providing three flat faces 9a, 9b and 9c.

[0071] For its part, the dental prosthesis 2 includes an internal housing 10 extending along a third elongation direction IV-IV. The internal housing 10 includes a connecting surface 11 intended to be attached and fixed by bonding to the receiving surface 6 of the base 1 ( figure 6 à 8 ).

[0072] We can see more particularly on the figure 9 (which is a cross-sectional view along plane P of the figure 8 ) that the bonding surface 11 has three flat faces 12a, 12b and 12c arranged at 120 degrees to each other.

[0073] When the dental prosthesis 2 is received by fitting (and gluing) onto the distal section 5 of the base 1, the three flat faces 9a to 9c of the distal section 5 cooperate with the three flat faces 12a to 12c of the dental prosthesis 2 in order to lock the base 1 in rotation relative to the dental prosthesis 2 around the second elongation direction III-III (coinciding with the longitudinal direction II).

[0074] To ensure satisfactory indexing between the base 1 and the dental prosthesis 2, faces 9a to 9c of the indexing element 9 are not laser-textured. This prevents the formation of material ridges similar to ridges 8a and 8b, which could impair the proper fit of the dental prosthesis 2 onto the base 1 and their correct indexing.

[0075] We can see more particularly on the figure 7 that the proximal section 4 of the base 1 terminates in an indexing section 4a with a non-circular cross-section (approximately triangular here). The indexing section 4a is intended to be received in an indexing housing 3a ( figure 8 ) with a non-circular and complementary cross-section. The indexing section 4a and the indexing housing 3a cooperate to lock the base 1 in rotation relative to the dental implant 3 around the longitudinal direction II.

[0076] After its laser texturizing (and possibly coloring), the base 1 can be used to fabricate a dental restoration set 13 ( figures 7 And 8 ) using dental prosthesis 2.

[0077] To do this, we bring together (making the second elongation direction III-III and the third elongation direction IV-IV coincide) and fix the dental prosthesis 2 on the base 1 by gluing between the bonding surface 11 of the dental prosthesis 2 and the receiving surface 6 of the base 1.

[0078] The fact that the receiving surface 6 has been treated with laser texturing makes it possible in particular not to damage the circular edge 1c ( figures 1 et 2 ) which delimits the receiving surface 6 of the base 1. Thus, the proximal section 4 of the base 1 continuously extends the dental prosthesis 2, avoiding the presence of discontinuities conducive to the accumulation of tartar and bacteria.

[0079] Usually, to promote good retention by bonding of the dental prosthesis 2 to the base 1, the bonding surface 11 of the dental prosthesis 2 is subjected to an abrasive surface treatment, in particular by sandblasting.

[0080] However, such abrasive treatment may lead to degradation of the surface 14 (which is substantially in the form of a crown) intended to come into contact with a corresponding surface 15 (which is also substantially in the form of a crown, and forms part of the receiving surface 6) provided on the base 1 and delimited by the circular edge 1c, and / or to degradation of the outer surface of the transgingival portion PT of the base 1 ( figure 8 ).

[0081] To further limit the risk of discontinuities between the base 1 and the dental prosthesis 2, which are conducive to the accumulation of tartar and bacteria, one can refrain from applying an abrasive surface treatment, in particular by sandblasting, to the bonding surface 11 of the dental prosthesis 2

[0082] The applicant has indeed noticed that, surprisingly, the improvement in the retention by bonding of the dental prosthesis 2 to the base 1 by laser texturing is such that it can be envisaged to do without a treatment of the bonding surface 11 of the dental prosthesis 2 by means of an abrasive surface treatment, in particular by sandblasting.

[0083] This is particularly noticeable on the figures 7 And 8 that a screw 16 allows the entire dental restoration assembly 13 to be retained on the dental implant 3.

[0084] The present invention is not limited to the embodiments that have been explicitly described, but is defined by the text of the claims below.

Claims

1. Method for manufacturing an abutment (1) made of titanium or of titanium alloy for receiving a dental prosthesis (2) on a dental implant (3), extending substantially along a longitudinal direction (I-I) between a proximal end (1a) and a distal end (1b), comprising: - a proximal section (4) configured to be received in or on a dental implant (3) and extending along a first direction of elongation (II-II), - a distal section (5) configured to receive and support a dental prosthesis (2) and extending along a second direction of elongation (III-III), said distal section (5) having a receiving surface (6) intended to receive said dental prosthesis (2) by bonding, method for manufacturing wherein one texturizes at least partially said receiving surface (6) by laser by hollowing out grooves (7) in said receiving surface (6).

2. Method for manufacturing an abutment (1) according to Claim 1, characterized in that said grooves (7) of the texturing form a grid.

3. Method for manufacturing an abutment (1) according to Claim 2, characterized in that the grid has a substantially rectangular pattern, preferably substantially square.

4. Method for manufacturing an abutment (1) according to Claim 3, characterized in that the texturing is carried out by hollowing out grooves (7) that are oriented obliquely, preferably at substantially 45°, with respect to the second direction of elongation (III-III).

5. Method for manufacturing an abutment (1) according to either of Claims 3 and 4, characterized in that the grid is produced with a substantially square pattern, of which the length of the sides is between 150 µm and 350 µm, preferably between 200 µm and 300 µm.

6. Method for manufacturing an abutment (1) according to any one of Claims 2 to 5, characterized in that the grooves (7) have a depth of between 5 µm and 15 µm, preferably between 7 µm and 10 µm.

7. Method for manufacturing an abutment (1) according to any one of Claims 1 to 6, characterized in that, before or after the texturing of at least part of the receiving surface (6), the beam of the laser scans at least part of said receiving surface (6) so as to bring about a yellowing of said at least one part of said receiving surface (6).

8. Method for manufacturing an abutment (1) according to Claim 7, characterized in that the beam of the laser scans the totality of said receiving surface (6) so as to bring about a yellowing of the whole of said receiving surface (6).

9. Method for manufacturing an abutment (1) according to any one of Claims 1 to 8, characterized in that: - the abutment (1) has at least one rotation indexing member (9) comprising a face (9a-9c) or surface configured to cooperate with the dental prosthesis (2) in order to block said abutment (1) in rotation with respect to the dental prosthesis (2) about the second direction of elongation (III-III), - said face (9a-9c) or surface is devoid of texturing.

10. Method for manufacturing ex vivo a dental restoration assembly (13) comprising: - a dental prosthesis (2), preferably manufactured from a ceramic material, - an abutment (1) made of titanium or of titanium alloy, for receiving a dental prosthesis (2) on a dental implant (3), in which method: - an abutment (1) is provided which has been obtained by implementing the manufacturing method according to any one of Claims 1 to 9, - a dental prosthesis (2) is provided which comprises an inner housing (10) with a connection surface (11) intended to be attached and fixed by bonding to the receiving surface (6) of the abutment (1), - the dental prosthesis (2) is attached and fixed to the abutment (1) by bonding between the connection surface (11) of the dental prosthesis (2) and the receiving surface (6) of the abutment (1), - the connection surface (11) of the dental prosthesis (2) has not undergone abrasive surface treatment, in particular by sandblasting.

11. Abutment (1) made of titanium or of titanium alloy for receiving a dental prosthesis (2) on a dental implant (3), extending substantially along a longitudinal direction (I-I) between a proximal end (1a) and a distal end (1b), having: - a proximal section (4) configured to be received in or on a dental implant (3) and extending along a first direction of elongation (II-II), - a distal section (5) configured to receive and support a dental prosthesis (2) and extending along a second direction of elongation (III-III), said distal section (5) having a receiving surface (6) intended to receive said dental prosthesis (2) by bonding, said receiving surface (6) being at least partially textured by laser by hollowing out grooves (7) in said receiving surface (6).

12. Abutment (1) according to Claim 11, characterized in that said grooves (7) of the texturing form a grid.

13. Abutment (1) according to Claim 12, characterized in that the grid has a substantially rectangular pattern, preferably substantially square.

14. Abutment (1) according to Claim 13, characterized in that the grid has grooves (7) that are oriented obliquely, preferably at substantially 45°, with respect to the second direction of elongation (III-III).

15. Abutment (1) according to either of Claims 13 and 14, characterized in that the grid has a substantially square pattern, of which the length of the sides is between 150 µm and 350 µm, preferably between 200 µm and 300 µm.

16. Abutment (1) according to any one of Claims 12 to 15, characterized in that the grooves (7) have a depth of between 5 µm and 15 µm, preferably between 7 µm and 10 µm.

17. Abutment (1) according to Claim 16, characterized in that the grooves (7) are bordered, along their sides, by material beads (8a-8b) having a height of between 5 µm and 15 µm, preferably of between 7 µm and 10 µm.

18. Abutment (1) according to any one of Claims 11 to 17, characterized in that at least part of said receiving surface (6) has a yellow coloration.

19. Abutment (1) according to Claim 18, characterized in that the whole of said receiving surface (6) has a yellow coloration.

20. Abutment (1) according to any one of Claims 11 to 19, characterized in that: - the abutment (1) has at least one rotation indexing member (9) comprising a face (9a-9c) or surface configured to cooperate with the dental prosthesis (2) in order to block said abutment (1) in rotation with respect to the dental prosthesis (2) about the second direction of elongation (III-III), - said face (9a-9c) or surface is devoid of texturing by laser.

21. Abutment (1) according to any one of Claims 1 to 20, characterized in that the receiving surface (6) has an area of less than 30 mm2.

22. Dental restoration assembly (13) having: - an abutment (1) obtained by the method according to any one of Claims 1 to 9 or an abutment (1) according to any one of Claims 11 to 21, - a dental prosthesis (2), preferably manufactured from a ceramic material and having an inner housing (10) with a connection surface (11) intended to be attached and fixed by bonding to the receiving surface (6) of the abutment (1).

23. Dental restoration assembly (13) according to Claim 22, characterized in that the connection surface (11) of the dental prosthesis (2) has not undergone abrasive surface treatment, in particular by sandblasting.