Dental implant with concave surface parts and support elements

Abstract

Disclosed is a dental implant. The dental implant comprises an implant body having a main axis extending from a coronal end to an apical end of the implant body. The dental implant comprises a receptacle for receiving a secondary body. The dental implant comprises one or more support elements. The one or more support elements are arranged on the implant body and comprise a first support element extending along the main axis and having a first primary support surface and a first secondary support surface. The dental implant has one or more bioadhesive cavities arranged between the first primary support surface and the first secondary support surface of the first support element. A first primary bioadhesive cavity of the one or more bioadhesive cavities is formed at least by a first primary concave surface part of the implant body and at least one of the first primary support surface and the first secondary support surface. The first primary concave surface part is concave along the main axis. 1A to be published

Description

[0001] DENTAL IMPLANT WITH CONCAVE SURFACE PARTS AND SUPPORT ELEMENTS

[0002] The present disclosure pertains to the field of dental implants. The present disclosure relates to a dental implant for use together with a bioadhesive composition for bonding the dental implant to a bone cavity, such as an extraction socket.

[0003] BACKGROUND

[0004] The field of biomaterials includes fixation of implants to tissues as well as tissue repair. To date, a range of synthetic, naturally-derived and biomimetic-based adhesive compositions have been developed for use in a range of clinical applications, including bone repair and dental implantology. Still, the limited mechanical strength of implants in combination with bioadhesives has remained an issue within the field of implants and biomaterials.

[0005] Even though there are several tissue adhesives available today on the market, none of them are ideal sealants or even adhesives. Cyanoacrylates were one of the first synthetic adhesives used as bone adhesives, demonstrating a high potential for bone bonding, together with methacrylates and the most promising synthetic adhesives in the dental area, since they are able to polymerize in wet conditions and achieve strong wet adhesion. At the same time, they are able to react with the amines on the surface of the tissue creating a covalent bond, thus achieving rapid curing at low cost. Cyanoacrylates have shown good adhesion but have shown inflammatory response during degradation. Thus, making the clinical use of cyanoacrylate-based adhesives limited to application needing only small amount of adhesives, for example, wound healing or repair damage to the skin, as large quantities of the cyanoacrylate-based adhesives can cause chemical burns chronic inflammatory response, tissue necrosis and dermatitis, due to the toxic nature of its byproducts.

[0006] Fibrin glues have low adhesive strengths but are more biocompatible. Other adhesives struggle with high costs and long curing times or lack of tailoring of the curing time dependent on the tissue and the situation.

[0007] Calcium phosphates (CaP) and in particular hydroxyapatite (Hap, HAp, or HA; with the formula Cas PCLhOH or Caio(P04)e(OH)2 to denote that the crystal unit cell comprises two entities and is in the form of a dimer), is a mineral that is widely used in medical applications due to its similarity to the mineral components of bone and teeth. Hydroxyapatite is non- toxic, biocompatible and bioactive. This means that on one hand hydroxyapatite is not harmful and not recognized as a foreign body, and on the other hand that it may have a positive effect on remodelling the bone. Hence hydroxyapatite has been widely used in bone repair and as drug / gene delivery vehicle, catalyst, ion adsorption / exchange agent, photoelectric reagent and so on. Calcium phosphate composites are known and used as bone substitutes and bone grafts. These calcium phosphate composites tend to form complexes primarily between calcium-based salts through charge interactions. These composites are used as general bone void fillers and generally lack the adhesive strength sufficient to adhere or fix bones together, for example, fractured bone surfaces. These compositions lack sufficient chemical interactions between the calcium phosphate composite and the bone surface or other surface materials, and lack sufficient strength to be used to bond bone to bone or bone to other materials.

[0008] US2012288446 (LIS'446) discloses an adhesive comprising a multivalent metal compound, and an effective amount of a compound that is structurally similar to phosphoserine, such as for example a phosphoserine oligomer or a phosphoserine capped polymer. LIS'446 discloses, for example, experimental data using tetracalcium phosphate (TTCP) as the multivalent metal compound and phosphoserine-ethyleneglycol-diglycidyl-phosphoserine and obtains adhesive strength of up to 3.76 MPa when adhered to bone.

[0009] LIS20130122057 (IIS'057) discloses a bone restorative composition comprising amino acid phosphate species, a multivalent metal compound and a bioactive glass material containing ionic functional groups. IIS'057 discloses examples using a composition comprising TTCP as the multivalent metal compound, phosphoserine as the amino acid species together with various amounts of Combeite Bioactive glass and water. The corticol bone to bone shear strengths obtained varied between 0.75-2.13 MPa.

[0010] W02019106173A1 describes a composition of a calcium phosphate such as tetracalcium phosphate or a-TCP (alpha tricalcium phosphate) and an additive compound selected from nucleic acid or nucleotides, phospho(enol)pyruvic acid and phosphocreatine. The composition may be used as a tissue adhesive on a subject.

[0011] WO2016196371A1 relates to a composition comprising a multivalent metal compound and a compound of formula (I) that is an organic phosphate compound (e.g., a small organic phosphate compound) such as phosphoserine. The composition is said to possess the properties of adhesion, conforming to a surface, being capable of luting, and becoming a solid that can be adhesively applied to bone or device surfaces. In some embodiments, the shape of the applied composition can be altered by flowing, molding, forming, or plastic deformation of any other kind, to obtain the desired shape and size prior to it becoming generally rigid and solid.

[0012] Notwithstanding the development of a variety of bioadhesive compositions, the use of these compositions in dental implantology has met with limited success, in part due to the immediate and extremely high shear impact / compressive forces on the dental implants, a problem that has been hard to solve in the field.

[0013] Dental implant stability is a critical parameter influencing the overall success of dental implant treatments. The concept of dental implant stability is typically separated into two regimes, namely, I) primary stability, characterized by the purely mechanical interaction between the dental implant and the host bone and II) secondary stability, characterized by biological stabilization of the implant through the process of osseointegration.

[0014] Research within the field of time-dependent stability of dental implants suggests a positive correlation between primary and secondary implant stabilities, meaning that high primary stability is a strong indicator that the implant will reach a high secondary stability.

[0015] The major factors affecting primary implant stability are the surgical protocol, host bone quality and the macroscopic implant design. Efforts to improve the primary stability of dental implants in poor quality bone or with reduced thread engagement are ongoing and, recently, a calcium phosphate-based cement material, having glue-like properties, has been developed (Bystrom JL, Pujari-Palmer M, J. Fund. Biomater. (2019), 10(4), 54 “Phosphoserine functionalized cements preserve metastable phases, and reprecipitate octacalcium phosphate, hydroxyapatite, dicalcium phosphate, and amorphous calcium phosphate, during degradation in vitro’’’, Pujari-Palmer M et al. Materials (2018), 11(12), 2492 “A novel class of injectable bioceramics that glue tissues and biomaterials” (Basel); Pujari-Palmer M et al. ChemEngineering (2020), 4(1), 19 “Factors that determine the adhesive strength in a bioinspired bone tissue adhesive”; US2020030483A1 / W02019106173A1). This technology utilizes the reported properties of the amino acid phosphoserine to facilitate adhesive bonding between the cement components and, e.g., tissues and metals, under both wet and dry conditions. While this material might hold the promise to enhance the primary stability of dental implants, considering the glue-like nature and the fact that the material is a viscous liquid at the time of implant placement, so far, widely diverging results on improved primary stability have been reported.

[0016] Generally, adhesive-based primary stability generation for dental implants is not well represented in the literature and the imaginable parameters that might contribute to the stability of the initial bond have not been fully elucidated. It has been reported that the surface area of the bond interface is a key component affecting bond strength. For dental implants, surface area is contingent upon 3 principal factors: implant length, implant radius / diameter, and implant geometry (thread-to-core ratio and shape). Additionally, depending on the specific adhesive being used, setting time has been reported to play an important role in adhesive bond strength.

[0017] SUMMARY

[0018] Accordingly, there is a need for an implant solution, which mitigate, alleviate, or address the shortcomings existing and provides improved stability and bond strength of the dental implant, for example in the presence of a bioadhesive composition.

[0019] Disclosed is a dental implant. The dental implant comprises an implant body having a main axis extending from a coronal end to an apical end of the implant body. The dental implant comprises a receptacle for receiving a secondary body. The dental implant comprises one or more support elements. The one or more support elements are arranged on the implant body and comprise a first support element extending along the main axis and having a first primary support surface and a first secondary support surface. The dental implant has one or more bioadhesive cavities arranged between the first primary support surface and the first secondary support surface of the first support element. A first primary bioadhesive cavity of the one or more bioadhesive cavities is formed at least by a first primary concave surface part of the implant body and at least one of the first primary support surface and the first secondary support surface. The first primary concave surface part is concave along the main axis.

[0020] It is an advantage of the present disclosure that the first primary surface part of the dental implant facilitates a desirable pressure distribution profile on a bioadhesive composition during insertion of the dental implant into the bioadhesive composition. The concave shape of the first primary surface transfers a longitudinal pressure applied on the coronal end in the apical direction to a non-longitudinal pressure, such as a radial pressure or a pressure component in a direction between the radial direction and the longitudinal direction. The pressure distribution profile increases the pressure exerted on the bioadhesive composition in a radial direction and in a longitudinal direction. The increased pressure on the bioadhesive composition causes the bioadhesive composition to evenly distribute around the dental implant. In addition to distributing the bioadhesive composition around the dental implant, the increased pressure may also push the bioadhesive composition into cancellous bone in a bone cavity. This can increase the overall mechanical stability of the dental implant, especially in highly cancellous bone which otherwise typically results in a lower mechanical stability. The support element is configured to contact a bone surface or tissue surface, when inserted into a bone cavity, such as an extraction socket. The support element thus provides an initial stability to the implant by contact with the bone surface or tissue surface, preventing a movement of the implant before the bioadhesive composition has cured and provides further stability of the implant. The support element is further configured to prevent a rotation of the dental implant around the main axis, when contacted with the bioadhesive composition, by allowing the bioadhesive composition to surround the support member and to contact the first primary support surface and the first secondary support surface. Upon curing of the bioadhesive composition, the bioadhesive composition will create a form fit with the support element which prevents a rotation of the dental implant. By evenly distributing the bioadhesive composition around the dental implant and rotationally securing the dental implant in the bioadhesive composition, the curing of the bioadhesive composition is promoted, which improves the strength of the bond between the dental implant and the bioadhesive composition. By providing the concave primary surface between two support surfaces of one or more support element(s) one or more cavities can be provided for receiving the bioadhesive composition. These cavities can herein be referred to as bioadhesive cavities. The support surfaces of the support element(s) provide a sharp boundary of the cavity which increases the pressure acting on the bioadhesive composition in the cavity when the dental implant is inserted into the bone cavity, such as an extraction socket, with the bioadhesive composition. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other features and advantages of the present disclosure will become readily apparent to those skilled in the art by the following detailed description of exemplary embodiments thereof with reference to the attached drawings, in which:

[0022] Fig. 1 A-1 D illustrate an example dental implant having a concave surface part and a support element according to this disclosure,

[0023] Fig. 2A-2D illustrate an example dental implant having a primary, a secondary, and a tertiary concave surface part and one support element according to this disclosure,

[0024] Fig. 3A-3D illustrate an example dental implant having two support elements and two primary concave surface parts according to this disclosure,

[0025] Fig. 4A-4D illustrate an example dental implant having three support elements and three primary concave surface parts according to this disclosure, and

[0026] Fig. 5A-5D illustrate an example dental implant having four primary, secondary, and tertiary concave surface parts and four support elements according to this disclosure.

[0027] DETAILED DESCRIPTION

[0028] Various exemplary embodiments and details are described hereinafter, with reference to the figures when relevant. It should be noted that the figures may or may not be drawn to scale and that elements of similar structures or functions are represented by the same reference numerals throughout the figures. It should also be noted that the figures are only intended to facilitate the description of the embodiments. They are not intended as an exhaustive description of the disclosure or as a limitation of the scope of the disclosure. In addition, an illustrated embodiment does not need to have all the aspects or advantages shown. An aspect or an advantage described in conjunction with a particular embodiment is not necessarily limited to that embodiment and can be practiced in any other embodiments even if not so illustrated, or if not so explicitly described.

[0029] The figures are schematic and simplified for clarity, and they merely show details which aid understanding the disclosure, while other details have been left out. Throughout, the same reference numerals are used for identical or corresponding parts. The current disclosure relates to a dental implant. The dental implant comprises an implant body having a main axis extending from a coronal end to an apical end of the implant body. The main axis is thus a longitudinal axis of the dental implant. The dental implant comprises a receptacle for receiving a secondary body, such as a crown, an adapter, such as an abutment or a healing cap, or a scanbody. The dental implant comprises one or more support elements. The one or more support elements may be longitudinal support elements, such as support elements having a main extension in a longitudinal direction of the dental implant, such as extending substantially in parallel to the longitudinal axis of the dental implant. The one or more support elements are arranged on the implant body and comprise a first support element extending along the main axis and having a first primary support surface and a first secondary support surface, the dental implant having one or more bioadhesive cavities arranged between the first primary support surface and the first secondary support surface of the first support element. A first primary bioadhesive cavity of the one or more bioadhesive cavities is formed at least by a first primary concave surface part of the implant body and at least one of the first primary support surface and the first secondary support surface, wherein the first primary concave surface part is concave along the main axis. The one or more bioadhesive cavities can be seen as cavities for receiving a bioadhesive composition.

[0030] In accordance with conventional dental terminology, “apical” refers to the direction towards the bone and “coronal” to the direction towards the occlusal surface of the teeth. Therefore, the apical end of a component is the end which, in use, is directed towards or into the jawbone and the coronal end is that which is directed towards or into the oral cavity.

[0031] As used herein, the term bioadhesive or bioadhesive composition refers to a dental bioresorbable cement like structure. Said cement like structure is a biocompatible and biodegradable composition that is suitable to join two surfaces together where at least one of them is a tissue, such as, for example, a living tissue, a bone tissue, an oral soft tissue, or a dental tissue. The bioadhesive composition, as used herein, can also join together a non-biological surface (such as a dental implant surface) to a tissue, thus securing a dental implant into a bone cavity or an extraction socket. The bioadhesive composition according to the present disclosure has the particularity to be osteofriendly and osteoconductive, providing dental primary stability (and / or secondary stability) of the dental implant while in contact with at least one living tissue and maintaining said stability over time while the bone regenerates and grows around the dental implant. The bioadhesive composition is configured to slowly disappear in favor of the newly grown bone.

[0032] As used herein, the term dental implant refers herein to a threadless implant or a threadless element. The dental implant of the present invention differs from a traditional dental implant in that said it has no thread, thus it cannot be screwed into the bone, or a jawbone. In addition, said dental implant also differs from other threadless implants known in the art, in that it is not designed to be hammered into the bone, or a jawbone.

[0033] The dental implant may be a threadless implant configured to be used together with a bioadhesive composition to secure the dental implant to a socket or a tissue. In other words, the dental implant may be configured to not be screwed into any bone upon insertion into a socket.

[0034] The one or more support elements are configured to provide an initial and / or primary stability to the dental implant and / or to prevent rotation of the dental implant when the dental implant is contacted with the bioadhesive composition. The support elements may also serve as nucleation points for osseointegration and thereby contribute to maintaining implant stability during osseointegration.

[0035] As used herein, the term primary stability, also known as mechanical stability, refers to the mechanical engagement of the dental implant with the bioadhesive composition once set and the absence of mobility of the dental implant in the socket or cavity. Said mechanical or bio-mechanical stability being influenced by numerous factors, such as, for example but not limited to, the setting of the bioadhesive, the quantity or quality of the bioadhesive composition, or the geometric design of the dental implant.

[0036] As used herein, the term secondary stability, also known as biological stability, refers to the development from regeneration and remodelling of the bone and tissue around the dental implant after insertion and can be affected by the primary stability.

[0037] The one or more support element(s) may respectively have a primary support surface and a secondary support surface. The primary support surface and the secondary support surface may be radial surfaces, such as surfaces having a surface normal perpendicular to the radial direction of the dental implant, such as in a tangential direction of the dental implant. The primary support surface and the secondary support surface are configured to contact the bioadhesive composition and to create a form fit with the bioadhesive composition, thereby preventing a rotation of the dental implant in relation to the bioadhesive composition. In one or more example dental implants, the one or more support element(s) comprise a first support element having a first primary support surface and a first secondary support surface. The one or more support elements may extend in parallel to the main axis of the dental implant, such as in a longitudinal direction of the dental implant. In one or more example dental implants, the first primary surface part, and / or the first secondary surface part, and / or the first tertiary surface part, extends between the first primary support surface of the first support element and the first secondary support surface of the first support element. The first primary concave surface part may extend in a first angular range less than 361 degrees about the main axis.

[0038] The concave shape of the concave surface parts, such as the first primary concave surface part, may facilitate a desirable pressure distribution profile on a bioadhesive composition during insertion of the dental implant and the bioadhesive composition into the bone cavity, such as an extraction socket. The concave shape transfers a longitudinal pressure applied on the coronal end in the apical direction to a non-longitudinal pressure, such as radial pressure or a pressure component in a direction between the radial direction and the longitudinal direction. The pressure distribution profile increases the pressure exerted on the bioadhesive composition in a radial direction and in a longitudinal direction. In addition to distributing the bioadhesive composition around the dental implant, increasing the pressure exerted on the bioadhesive composition, it may also push the bioadhesive composition into the cancellous bone in the bone cavity. This can increase the overall mechanical stability of the dental implant, especially in highly cancellous bone which otherwise typically results in a lower mechanical stability. The concave shape causes a faster change in volume available for the bioadhesive composition compared to a strictly conical shape implant when the implant is inserted into the bone cavity in the presence of the bioadhesive composition and the bioadhesive composition is provided in an enclosed space such as a bone cavity, or an extraction socket. The change in volume causes a pressurizing and compacting effect on the bioadhesive composition, which can enhance interaction between the bioadhesive composition and the surface of the implant.

[0039] The concave shape of the concave surface parts further increases the surface area of the dental implant compared to a straight surface, such as compared to a dental implant having a strictly conical shape. Thereby, the contact surface between the bioadhesive composition and the dental implant can be increased without increasing the overall footprint of the dental implant, thus increasing the stability and the strength between the bioadhesive composition and the dental implant.

[0040] In one or more example dental implants, the dental implant has a wider radius at a coronal end of the first primary surface than at the apical end of the first primary surface, so that the dental implant has a substantially conical shape. Upon insertion of the dental implant and the bioadhesive composition into the bone cavity, the conical shape of the dental implant exerts a pressure on the bioadhesive composition causing the bioadhesive composition to be compacted and evenly spread around the dental implant. By compacting the bioadhesive composition, the interaction between the bioadhesive composition and the implant surface is improved, leading to the bioadhesive composition and the dental implant being strongly bonded.

[0041] In one or more examples according to the current disclosure, the bioadhesive composition is a bioadhesive composition comprising a calcium phosphate for dental procedures for use in enhancing primary and / or secondary stability of a dental implant and / or tooth replacement when placed into a bone cavity or an extraction socket. In one or more examples according to the current disclosure, the bioadhesive composition comprises an organic phosphate compound, as well as calcium phosphate.

[0042] As used herein, the term organic phosphate compound refers to an organic compound comprising a phospho-amino acid moiety, for example, but not limited to, phosphoserine or a phosphoserine derivative. As used herein the term phosphoserine derivative refers to a compound with a phosphoserine like skeleton. Illustrative examples of organic phosphate compounds include, but not limited to, phosphoserine derivatives such as a phosphoserine polymer, phosphoserine oligomer, phosphoserine-ethyleneglycol-diglycidyl- phosphoserine, as well as distinct phospho amino acid moieties like tyrosine phosphate, and threonine phosphate.

[0043] More specifically, the disclosure applies to bioadhesive composition comprising calcium phosphate for use as described herein. In one or more examples according to the current disclosure, the bioadhesive composition comprises an organic phosphate compound as well as calcium phosphate. Typically, the composition may comprise phosphoserine as well as calcium phosphate.

[0044] In one or more examples according to the current disclosure, the composition comprises a calcium phosphate selected from the group consisting of hydroxyapatite, octacalcium phosphate, tetracalcium phosphate, tricalcium phosphate, and combinations thereof. In a currently preferred embodiment, calcium phosphate is tetracalcium phosphate, tricalcium phosphate, or combinations thereof.

[0045] In one or more example dental implants, the one or more support elements comprise a second support element extending along the main axis and having a second primary support surface and a second secondary support surface. The one or more bioadhesive cavities comprise a second primary bioadhesive cavity formed at least by a second primary concave surface of the implant body, the second primary support surface and a secondary support surface of an adjacent support element. The adjacent support element may be a second primary support surface when the dental implant has two support elements, or a third primary support surface when the dental implant has three or more support elements. In other words, the first primary bioadhesive cavity may extend in a clockwise direction from the first support element and the second bioadhesive cavity may extend from the first support element in a counter-clockwise direction.

[0046] In one or more example dental implants, the one or more bioadhesive cavities comprise a first secondary bioadhesive cavity. The first secondary bioadhesive cavity is defined by a first secondary concave surface part of the implant body, with a primary edge, such as a first primary edge, separating the first primary concave surface part and the first secondary concave surface part. The first secondary bioadhesive cavity, such as the first secondary concave surface part, may be arranged between the first primary bioadhesive cavity, such as the first primary concave surface part, and the coronal end of the dental implant.

[0047] In one or more example dental implants, the first secondary concave surface part is concave along the main axis.

[0048] In one or more example dental implants, the primary edge, such as the first primary edge, has a curvature. The curvature may provide a smooth transition between the first secondary surface part and the first tertiary surface part, which facilitates a smooth flow of bioadhesive composition from the first primary surface part to the first secondary surface part upon insertion of the dental implant into the bioadhesive composition.

[0049] In one or more example dental implants, the primary edge, such as the first primary edge, extends between a primary support surface and a secondary support surface of one or more support elements. In one or more example dental implants, such as when the dental implant has one support element, such as the first support element, the first primary edge extends between the primary support surface and the secondary support surface of the first support element.

[0050] In one or more example dental implants, the first secondary concave surface part of the implant body is arranged between the first primary concave surface part and the coronal end of the implant body along the main axis.

[0051] In one or more example dental implants, the one or more bioadhesive cavities comprise a first tertiary bioadhesive cavity formed at least by a first tertiary concave surface part of the implant body and a first secondary edge separating the first secondary concave surface part and the first tertiary concave surface part. In one or more example dental implants, the first tertiary concave surface part is concave along the main axis.

[0052] In one or more example dental implants, the first secondary edge has a curvature. The curvature may provide a smooth transition between the first secondary surface part and the first tertiary surface part, which facilitates a smooth flow of bioadhesive composition from the first secondary surface part to the first tertiary surface part upon insertion of the dental implant into the bioadhesive composition.

[0053] In one or more example dental implants, the primary edge may be separated by the one or more recessed support element(s). In other words, the primary edge may be separated in to the first primary edge, a second primary edge, a third primary edge and / or a fourth primary edge, or even further primary edge(s) depending on the number of recessed support elements. In one or more example dental implants, the secondary edge may be separated by the one or more recessed support element(s). In other words, the secondary edge may be separated in to the first secondary edge, a second secondary edge, a third secondary edge and / or a fourth secondary edge, or even further secondary edge(s) depending on the number of recessed support elements. The primary concave surface part, the secondary concave surface part, and the tertiary concave surface part are arranged adjacent to each other along the longitudinal axis of the dental implant, and separated by a respective edge, such that the primary concave surface part is arranged closer to the apical end of the dental implant than the secondary concave surface part and the tertiary concave surface part. The secondary concave surface part is arranged closer to the apical end of the dental implant than the tertiary concave surface part and closer to the coronal end of the dental implant than the primary concave surface part. The tertiary concave surface part is arranged closer to the coronal end of the dental implant than the first concave surface part and the secondary concave surface part. Correspondingly, first, second, third, etc., denote surfaces arranged adjacent to each other along the circumference of the dental implant. In other words, a first concave surface, such as the first primary concave surface, is arranged adjacent to a second surface, such as the second primary surface, around the longitudinal axis of the dental implant.

[0054] In one or more example dental implants, the primary support surface(s) and the secondary support surface(s) are radial surfaces, such as radial surfaces of the dental implant. A radial surface can herein be seen as a surface having a normal, such as a surface normal, in the tangential direction of the dental implant.

[0055] In one or more example dental implants, the primary support surface, such as the first primary support surface, and the secondary support surface, such as the first secondary support surface, are connected via a boundary surface, such as a first boundary surface.

[0056] In one or more example dental implants, the boundary surface, such as the first boundary surface, is a tangential surface of the implant body. A tangential surface can herein be seen as a surface having a normal, such as a surface normal, in the radial direction of the dental implant. The boundary surface may be a smooth surface or may comprise one or more indentations. The indentations may be oriented towards the main axis of the dental implant. In other words, the boundary surface may be at a distance from the main axis that varies over the length of the main axis. The indentations may be concave, square, and / or triangular. The boundary surface may thus have a wave form, such as a sine wave form, a square wave form, and / or a triangle wave form. The indentations may be configured to receive the bioadhesive composition, so that the bioadhesive composition engages the indentations and creates a form fit with the dental implant. In one or more example dental implants, the connecting surface of the support element is the widest part of the dental implant.

[0057] In one or more example dental implants, the first boundary surface of the first support element curves at the apical end of the dental implant, so that the connecting surface forms the tangential surface parallel to the main axis of the implant body and a base surface at the apical end of the implant body.

[0058] In one or more example dental implants, the one or more support elements is / are arranged at the apical end of the dental implant.

[0059] In one or more example dental implants, the one or more support elements, such as the first support element, protrude(s), such as extends, from the implant body over at least 15% of a length of the implant body extending along the main axis. In other words, the one or more support elements may extend over at least 15% of the length of the implant body, respectively. In one or more example dental implants, the one or more support elements extend between the apical end and the coronal end over at least 20% of the length of the dental implant. In one or more example dental implants, such as when the support element comprising a plurality of separate sub-portions, the sub-portions may in combination cover at least 20% of the length of the dental implant. For example, a first sub-portion of the support element may extend over 10% of the length of the dental implant, while a second sub-portion of the support element may extend over 10% of the length of the dental implant, so that the support element in total covers at least 20% of the length of the dental implant.

[0060] In one or more example dental implants, the one or more support elements protrude, such as extend, from the apical end towards the coronal end over at least 50% of the length, such as at least 75% of the length, of the dental implant.

[0061] In one or more example dental implants, the one or more support elements are protrusions. In one or more example dental implants, the one or more protruding support elements are solid elements. The term solid element refers to an element comprising a continuous surface and comprising no perforations, cavities, void spaces, recesses, holes and / or bores.

[0062] In one or more example dental implants, the one or more protruding support elements may be perforated. Perforated can herein be seen as comprising one or more recesses, cavities, void spaces, holes, and / or bores, in the outer surface of the core and / or the one or more support elements. The recesses, cavities, void spaces, holes, and / or bores may be configured for receiving the bioadhesive composition. This can further increase the primary stability of the dental implant once the bioadhesive composition has cured. In addition, the bioadhesive composition present in said recesses, cavities, void spaces, holes, and / or bores will ultimately slowly disappear in favour of the newly grown bone, thus providing increased secondary stability of the dental implant.

[0063] In one or more example dental implants, the plurality of support elements is equidistantly distributed, such as symmetrically distributed, around the main axis of the implant body, such as equally distributed around the circumference of the implant body. Equidistantly distributed can herein be seen as each of the plurality of support elements being arranged at the same distance from a neighbouring support element. In other words, the plurality support elements may be separated by an angular distance of 3607N, where N is the number of support elements arranged on the dental implant.

[0064] In one or more example dental implants, the plurality of support elements is unequally, such as asymmetrically, distributed around the main axis of the implant body. In other words, the distance between two adjacent support elements does not have to be the same. For example, if the dimension of the dental implant is to be reduced in a certain direction, such as due to the bone in which the dental implant is to be implanted being narrow, the position of the support elements may be adapted to avoid or reduce the protrusion in that direction.

[0065] In one or more example dental implants, the radius of the dental implant is larger at a coronal end of the concave surface part than at an apical end of the concave surface part.

[0066] In one or more example dental implants, an outer surface of the dental implant is threadless. The dental implant is thus not configured to be threaded into a jawbone, but rather configured to be secured to the jawbone once bonded with the bioadhesive composition. In a similar manner, the dental implant is not configured to be hammered into the jawbone, but rather configured to be secured to the jawbone once bonded with the bioadhesive composition.

[0067] In one or more example dental implants, the dental implant comprises one or more support element(s). In one or more example dental implants, the dental implant comprises a plurality of support elements having a primary support surface and a secondary support surface. The plurality of support elements may comprise the first support element and a second support element, the second support element having a second primary support surface and a second secondary support surface. In one or more example dental implants, the first primary concave surface part and / or the first secondary concave surface part, and / or the first tertiary concave surface part, extends between the primary support surface of the first support element, such as between the first primary support surface, and the secondary support surface of the second support element, such as the second secondary support surface. In one or more example dental implants, the dental implant comprises a second primary concave surface part, and / or a second secondary concave surface part, and / or a second tertiary concave surface part. The second primary concave surface part, and / or the second secondary concave surface part, and / or the second tertiary concave surface part may extend between the primary support surface of the second support element, such as between the second primary support surface, and the secondary support surface of the first support element, such as the first secondary support surface. In one or more example dental implants, such as when the plurality of support elements comprise a third support element having a third primary support surface and a third secondary support surface, the second primary concave surface part, and / or the second secondary concave surface part, and / or the second tertiary concave surface part may extend between the primary support surface of the second support element, such as between the second primary support surface, and the secondary support surface of the third support element, such as the third secondary support surface.

[0068] In one or more example dental implants, the one or more support elements are protruding from the implant body. In other words, the support elements may protrude from an outer surface, so that the first primary support surface and the first secondary support surface face away from each other, when seen from the shortest angular distance between the first primary support surface and the first secondary support surface. The protruding support element is configured to prevent a rotation of the dental implant around the main axis, when inserted into the bone cavity, such as an extraction socket, in the presence of the bioadhesive composition, by allowing the bioadhesive composition to surround the support member and to contact the first primary support surface and the first secondary support surface. Upon curing of the bioadhesive composition, the bioadhesive composition will create a form fit with the recessed support element which prevents a rotation of the dental implant.

[0069] In one or more example dental implants, the concave surface parts, such as the first primary concave surface part, and / or the first secondary concave surface part, and / or the first tertiary concave surface part, form a respective bioadhesive cavity, such as a cavity for receiving a bioadhesive composition. In one or more example dental implants, each concave surface part may form a bioadhesive cavity together with a primary support surface and a secondary support surface of one or more support elements.

[0070] In one or more example dental implants, such as when the dental implant comprises a single support element, the first angular range is less than 359 degrees.

[0071] In one or more example dental implants, such as when the dental implant comprises a plurality of support elements, the first angular range is between 30 and 200 degrees.

[0072] In one or more example dental implants, an outer surface of the dental implant is threadless. The dental implant is thus not configured to be threaded into a jawbone, but rather configured to be secured to the jawbone by bonding with the bioadhesive composition.

[0073] In one or more example dental implants, the dental implant has a substantially solid core. Substantially solid can herein be seen as the core being solid except for a receptacle for receiving a secondary body.

[0074] In one or more example dental implants, the dental implant may have a perforated core and / or support element(s). Perforated can herein be seen as comprising one or more recesses, cavities, void spaces, holes, and / or bores, in the outer surface of the core and / or the one or more support elements. The recesses, cavities, void spaces, holes, and / or bores may be configured for receiving the bioadhesive composition. This can further increase the stability of the implant once the bioadhesive composition has cured. In addition, the bioadhesive composition present in said recesses, cavities, void spaces, holes, and / or bores will ultimately slowly disappear in favour of the newly grown bone, thus providing increased secondary stability of the dental implant.

[0075] The material of the dental implant or dental structure are typically made of titanium, titanium alloys, ceramic, glass ceramic, zirconia, zirconia alloys, titanium-zirconium alloy, cobalt, chrome, cobalt-chrome alloy, or porcelain. The material of the dental implant or dental structure are preferably made of titanium, titanium alloys or titanium-zirconium alloy. Most preferably, the material of the dental implant or dental structure is made of titanium, or titanium alloys.

[0076] Figs. 1A to 1 D illustrate an example dental implant 1 according to the current disclosure. Fig 1A shows a perspective view of the example dental implant 1 , Fig. 1 B shows a cross section view along the main axis Xi_, such as the longitudinal axis, of the example dental implant 1 , Fig. 1C shows a side view of the example dental implant 1 , and Fig. 1 D shows a side view from the apical end along the main axis of the example dental implant 1. The dental implant 1 may be configured to be used together with a bioadhesive composition to secure the dental implant to a socket (such as an extraction socket or a bone cavity) or a tissue (such as a tissue of a subject). The dental implant 1 comprises an implant body 10 having a main axis XL extending from a coronal end 11 to an apical end 12 of the implant body 10. The dental implant 1 comprises a receptacle 13 for receiving a secondary body, such as a crown, or an adapter, such as an abutment or a healing cap, or a scanbody. The receptacle 13 may comprise threads 13A for receiving the secondary body. The threads 13A may be arranged on an inner surface of the receptacle 13. The implant body 10 has a primary surface part 14 extending in a first angular range about the main axis XL. The first angular range may be less than 359 degrees. The primary surface part 14 is concave along the main axis XL. The concave shape of the primary surface 14 may facilitate a desirable pressure distribution profile on a bioadhesive composition during insertion of the dental implant into the bioadhesive composition. The concave shape of the primary surface 14 transfers a longitudinal pressure applied on the coronal end in the apical direction to a nonlongitudinal pressure, such as radial pressure or a pressure component in a direction between the radial direction and the longitudinal direction. The pressure distribution profile increases the pressure exerted on the bioadhesive composition in a radial direction and in a longitudinal direction. The concave shape causes a faster change of volume available for the bioadhesive composition compared to a conical shape implant when the implant is inserted into the bioadhesive composition and the bioadhesive composition is provided in an enclosed space such as a bone cavity or an extraction socket. The change in volume causes a pressurizing and compacting effect on the bioadhesive composition, which enhances the interaction between the bioadhesive composition and the bioadhesive composition contacting surface 14. In one or more example dental implants, the dental implant 1 has a wider radius Rci at the coronal end of the primary surface part 14 than the radius RAI at the apical end of the primary surface part 14. In other words, the radius of the dental implant may be larger at a coronal end of the concave surface part than at an apical end of the concave surface part. Upon insertion of the dental implant 1 into the bioadhesive composition, due to the dental implant being wider at the coronal end of the first primary surface part 14 than at the apical end of the first primary surface part 14, the dental implant exerts a pressure on the bioadhesive composition causing the bioadhesive composition to be compacted and evenly spread around the dental implant. By compacting the bioadhesive composition, the interaction between the bioadhesive composition and the dental implant is improved, and ultimately leading to the bioadhesive composition and the dental implant being strongly bonded. The dental implant 1 further comprises a top part 30. The top part 30 is arranged at the coronal end 11 of the dental implant 1. In the example dental implant shown in Figs 1A-1 D, the top part 30 is configured as a tissue level top part 30A, which allows, for example, to deal with the addition or the removal of parts without disturbing the soft tissue. In the example dental implant shown in Figs. 1A to 1 D, the dental implant 1 has one, such as a single, support element 20, such as the first support element 20A. The one or more support elements 20, such as the first support element 20A, is configured to prevent rotation of the dental implant 1 when the dental implant 1 is inserted into the bone cavity or extraction socket in the presence of the bioadhesive composition. The first support element 20A has a primary support surface 21A and a secondary support surface 22A. In the example dental implant shown in Figs. 1A to 1 D, the primary support surface 21 A and the secondary support surface 22A are radial surfaces. In other words, the primary support surface 21A and the secondary support surface 22A are surfaces having a surface normal perpendicular to the radial direction of the dental implant 1 , such as in a tangential direction of the dental implant 1. The first primary support surface 21 A and the first secondary support surface 22A are configured to contact the bioadhesive composition and to create a form fit with the bioadhesive composition, thereby locking the dental implant in relation to the bioadhesive composition and preventing a rotation of the dental implant 1 in relation to the bioadhesive composition. By providing the dental implant 1 with a combination of support elements and concave surface parts being separated by an edge, the movement of the dental implant in a longitudinal direction and tangential direction, such as a rotation of the dental implant 1 around the main axis, can be prevented. The one or more support elements 20 may extend, at least partly, in parallel to the main axis of the dental implant 1 , such as in a longitudinal direction of the dental implant 1. In the example shown in Figs. 1A-1 D the primary support surface 21 , such as the first primary support surface 21 A, and the secondary support surface 22, such as the first secondary support surface 22A, are connected via a boundary surface 23, such as a first boundary surface 23A. The boundary surface 23 may be a substantially tangential surface of the implant body 10. The boundary surface 23 may be a smooth surface or may comprise one or more indentations (not shown in Figs. 1 A-1 D). The indentations may be oriented towards the main axis XL. In other words, the boundary surface 23 may be at a distance from the main axis XL that varies over the length of the main axis XL. The indentations may be concave, square, and / or triangular. The boundary surface 23 may thus have a wave form, such as a sine wave form, a square wave form, and / or a triangle wave form. The indentations may be configured to receive the bioadhesive composition, so that the bioadhesive composition engages the indentations and creates a form fit with the dental implant.

[0077] A tangential surface can herein be seen as a surface having a normal, such as a surface normal, in the radial direction R of the dental implant 1. The boundary surface 23 of the support element 20 may be the widest part of the dental implant 1 , such as the part of the dental implant where the radius is the largest. The boundary surface 23 of the support element 20 may curve at the apical end of the dental implant 1 , so that the boundary surface forms a tangential surface 20' parallel to the main axis XL of the implant body 10 and a base surface 20” at the apical end of the implant body 10. In one or more example dental implants 1 , the one or more protruding support elements may be perforated, such as may comprise one or more recesses, cavities, void spaces, holes, and / or bores, in the support surfaces 21 , 22 of the one or more support elements. In one or more example dental implants, the support element 20 may comprise throughgoing holes extending from the primary support surface 21 to the secondary support surface 21 of the support element 20. In other words, the one or more support elements 20 may comprise a first part 20’ extending in parallel with the main axis XLOf the dental implant 1. The one or more support elements 20 may further comprise a second part 20” extending in parallel to a radial direction of the dental implant 1. The second part 20” of the support element may be arranged at the apical end 12 of the dental implant. The one or more support elements 20 may further comprise a third part 20”’ connecting the first part 20’ with the second part 20”. The third part 20’” may be curved, such as rounded. By making the third part 20’” curved, the insertion of the dental implant into the bioadhesive composition and / or the bone cavity can be facilitated. Figs. 2A to 2D illustrate an example dental implant 1 according to the current disclosure. Fig 2A shows a perspective view of the example dental implant 1 , Fig. 2B shows a cross section view along the main axis of the example dental implant 1 , Fig. 2C shows a side view of the example dental implant 1 , and Fig. 2D shows a side view from the apical end along the main axis of the example dental implant 1. The example dental implant shown in Figs. 2A to 2D is similar to the example dental implant 1 of Fig. 1 A-1 D but differs in that the dental implant 1 comprises a secondary surface part 15, such as a first secondary surface part 15A, with a primary edge 17 separating the primary surface part 14 and the secondary surface part 15. The secondary surface part 15 may be arranged between the primary surface part 14 and the coronal end 11 of the dental implant 1. The secondary surface part 15 is concave along the main axis. The primary edge 17 has a curvature. The curvature may provide a smooth transition between the first secondary surface part and the first tertiary surface part, which facilitates a smooth flow of bioadhesive composition from the first secondary surface part to the first tertiary surface part upon insertion of the dental implant into the bioadhesive composition. The dental implant 1 may have a wider radius RC2 at the coronal end of the secondary surface part 15 than the radius RA2 at the apical end of the secondary surface part 15. The radius RA2 at the apical end of the secondary surface part 15 may be the same or wider than the radius Rci of the coronal end of the primary surface part 14.

[0078] In one or more example dental implants, such as when the dental implant comprises one or more support elements, the first primary edge may be separated into a plurality of parts, such as a first primary edge 17A and a second primary edge 17B.

[0079] The example dental implant 1 of Figs. 2A-2D further comprises a tertiary surface part 16, such as a first tertiary surface part 16A, and a secondary edge 18 separating the secondary surface part 15 and the tertiary surface part 16. The tertiary surface part 16 may be concave along the main axis XL.

[0080] The secondary edge 18 may also have a curvature, such as a curvature corresponding to the curvature of the first primary edge. The curvature may provide a smooth transition between the first secondary surface part and the first tertiary surface part. In one or more example dental implants, such as when the dental implant comprises one or more support elements, the first secondary edge may be separated into a plurality of parts, such as a first secondary edge 18A and a second secondary edge 18B.

[0081] The primary edge 17 and / or the secondary edge 18 create a bulge, such as a locally wider section in the radial direction of the dental implant. Due to the dental implant locally having a wider radius along the primary edge 17 and / or the secondary edge 18, the primary edge 17 and / or the secondary edge 18 prevents a movement of the dental implant in a longitudinal direction of the implant once the dental implant 1 has been inserted into the bioadhesive composition and the bioadhesive composition has cured.

[0082] The implant body 10 may be wider at the secondary surface part 15 than at the primary surface part 14, such that the average radius at the secondary surface part 15 along the main axis XL is larger than the average radius at the primary surface part 14. The implant body 10 may be wider at the tertiary surface part 17 than at the secondary surface part 15, such that the average radius at the tertiary surface part 16 along the main axis XL is larger than the average radius at the secondary surface part 15.

[0083] In the example dental implant of Figs. 2A-2D, the first primary surface part 14, and / or the first secondary surface part 15, and / or the first tertiary surface part 16, extends between the first primary support surface 21 A of the first support element 20A and the first secondary support surface 22A of the first support element 20A.

[0084] In the example dental implant of Figs. 2A-2D, the one or more support elements, such as the first support element 20A, is protruding from the implant body 10. In other words, the first support element 20 protrudes from an outer surface of the implant body, so that the first primary support surface 21A and the first secondary support surface 22A face away from each other, when seen from the shortest angular distance between the first primary support surface 21A and the first secondary support surface 22A. The protruding support element 21A is configured to prevent a rotation of the dental implant 1 around the main axis, when inserted into the bioadhesive composition. Upon insertion of the dental implant into the bioadhesive composition, the bioadhesive composition surrounds the support member and contact the first primary support surface and the first secondary support surface. Upon curing of the bioadhesive composition, the bioadhesive composition will create a form fit with the protruding support element which prevents a rotation of the dental implant.

[0085] Figs. 3A to 3D illustrate an example dental implant 1 according to the current disclosure having two support elements and a first and a second primary concave surface part. Fig 3A shows a perspective view of the example dental implant 1 , Fig. 3B shows a cross section view along the main axis of the example dental implant 1 , Fig. 3C shows a side view of the example dental implant 1 , and Fig. 3D shows a side view from the apical end along the main axis of the example dental implant 1. In the example dental implant shown in Figs. 3A to 3D, the dental implant 1 comprises two support elements 20, such as a first support element 20A and a second support element 20B. The first support element and the second support element have a primary support surface 21 and a secondary support surface 22, respectively. In other words, the first support element 20A has a first primary support surface 21A and a first secondary support surface 22A, and the second support element 20B has a second primary support surface 21 B and a second secondary support surface 22B. In the example shown in Figs. 3A-3D, the first support element 20A and the second support element 20B are equidistantly distributed, such as symmetrically distributed, around the main axis XL of the implant body 10 of the dental implant 1 , such as equally distributed around the circumference of the implant body 10. The first support element 20A and the second support element 20B are thus separated by an angle of 180°. Due to the dental implant comprising two support elements, the primary concave surface part 14 is separated into two surfaces, such as a first primary surface part 14A and a second primary surface part 14B. The first primary surface part 14A is arranged between the first primary support surface 21A of the first support element 20A and the second secondary support surface 22B of the second support element 20B. The second primary surface part 14B is arranged between the second primary support surface 21 B of the second support element 20B and the second primary support surface 22A of the first support element 20A. Although, shown with only primary concave support surface(s) 14 in the example of Figs. 3A-3D, the example dental implant 1 having two support elements 20A, 20B may also be combined with secondary concave support surface(s), and / or tertiary support surface(s) in accordance with the example dental implant 1 of Figs. 2A-2B.

[0086] Figs. 4A to 4D illustrate an example dental implant 1 according to the current disclosure having three support elements and a first primary concave surface part, a second primary concave surface part, and a third primary concave surface part. Fig. 4A shows a perspective view of the example dental implant 1 , Fig. 4B shows a cross section view along the main axis of the example dental implant 1 , Fig. 4C shows a side view of the example dental implant 1 , and Fig. 4D shows a side view from the apical end along the main axis of the example dental implant 1. In the example dental implant shown in Figs. 4A to 4D, the dental implant 1 comprises three support elements 20, such as a first support element 20A, a second support element 20B, and a third support element 20C. The first support element 20A, the second support element 20B, and the third support element 20C have a primary support surface 21 and a secondary support surface 22, respectively. In other words, the first support element 20A has a first primary support surface 21A and a first secondary support surface 22A, the second support element 20B has a second primary support surface 21 B and a second secondary support surface 22B, and the third support element 20C has a third primary support surface 21 C and a third secondary support surface 22C. In the example shown in Figs. 4A-4D, the first support element 20A, the second support element 20B, and the third support element 20C are equidistantly distributed, such as symmetrically distributed, around the main axis XL of the implant body 10 of the dental implant 1 , such as equally distributed around the circumference of the implant body 10. The first support element 20A, the second support element 20B, and the third support element 20C are thus separated by an angle of 120°. Due to the dental implant comprising three support elements 20A-20C, the primary concave surface part 14 is separated into three surfaces, such as a first primary surface part 14A, a second primary surface part 14B, and a third primary surface part 14C. The first primary surface part 14A is arranged between the first primary support surface 21A of the first support element 20A and the second secondary support surface 22B of the second support element 20B. The second primary surface part 14B is arranged between the second primary support surface 21 B of the second support element 20B and the second primary support surface 22A of the first support element 20A. Although, shown with only primary concave support surface(s) 14 in the example of Figs. 4A-4D, the example dental implant 1 having two support elements 20A, 20B may also be combined with secondary concave support surface(s), and / or tertiary support surface(s) in accordance with the example dental implant 1 of Figs. 2A-2B.

[0087] Figs. 5A to 5D illustrate an example dental implant 1 according to the current disclosure. Fig 5A shows a perspective view of the example dental implant 1 , Fig. 5B shows a cross section view along the main axis of the example dental implant 1 , Fig. 5C shows a side view of the example dental implant 1 , and Fig. 5D shows a side view from the apical end along the main axis of the example dental implant 1. In the example dental implant shown in Figs. 5A to 5D, the dental implant 1 comprises a plurality of support elements 20 respectively having a primary support surface 21 and a secondary support surface 22. The plurality of support elements 20 may comprise the first support element 20A and a second support element 20B, the second support element 20B having a second primary support surface 21 B and a second secondary support surface 22B. The example dental implant shown in Figs. 5A to 5D further comprises a third support element 20C having a third primary support surface 21 C and a third secondary support surface 22C, and a fourth support element 20D having a fourth primary support surface 21 D and a fourth secondary support surface 22D. The plurality of support elements may be equidistantly distributed around the main axis XL of the implant body 10. In the example shown in Figs. 5A to 5D the angular distance between a respective radial centerline of two neighboring support elements is 90°. In the example dental implant 1 of Figs. 5A to 5D, the first primary surface part 14A, the first secondary surface part 15A, and the first tertiary surface part 16A, extend between the primary support surface 21A of the first support element 20A, such as the first primary support surface and the secondary support surface 22B of the second support element 20B, such as the second secondary support surface. However, in one or more example dental implants, the dental implant may comprise only the first primary surface part 14A, or the first primary surface part 14A and the second primary surface part 15A extending between the primary support surface 21A of the first support element 20A, such as the first primary support surface and the secondary support surface 22B of the second support element 20B, such as the second secondary support surface. The example dental implant 1 of Figs. 5A to 5D, further comprises a second primary surface part 14B, a second secondary surface part 15B, and a second tertiary surface part 16B arranged between the primary support surface 21 B of the second support element 20B, such as the second primary support surface, and the secondary support surface 22C of the third support element 20B, such as the third secondary support surface. The example dental implant 1 of Figs. 5A to 5D, further comprises a third primary surface part 14C, a third secondary surface part 15C, and a third tertiary surface part 16C arranged between the primary support surface 21 C of the third support element 20C, such as the third primary support surface, and the secondary support surface 22D of the fourth support element 20D, such as the fourth secondary support surface. The example dental implant 1 of Figs. 5A to 5D, further comprises a fourth primary surface part 14D, a fourth secondary surface part 15D, and a fourth tertiary surface part 16D arranged between the primary support surface 21 D of the fourth support element 20D, such as the fourth primary support surface, and the secondary support surface 22A of the first support element 20A, such as the first secondary support surface.

[0088] In the example dental implant of Figs. 5A to 5D, the support elements 20A, 20B, 20C, 20D, are protruding from the implant body 10. In other words, the primary support surface 21 A- 21 D and the respective secondary support surface 22A-22D of each support element 20A- 20D face each other, when seen from the shortest angular distance between the first primary support surface 21A-21 D and the first secondary support surface 22A-22D. The protruding support elements 20A-20D are configured to prevent a rotation of the dental implant 1 around the main axis Xi_, when inserted into the bone cavity, such as an extraction socket, in the presence of the bioadhesive composition. Upon contacting the dental implant 1 into the bioadhesive composition, the bioadhesive composition may enter the recess of each support element 20A-20D and contact the first primary support surface 21 A-21 D and the first secondary support surface 22A-22D of each support element 20A-20D respectively. Upon curing of the bioadhesive composition, the bioadhesive composition creates a form fit with the protruding support element(s) 20A-20D which prevents a rotation of the dental implant 1.

[0089] It shall be noted that the features mentioned in the embodiments described in Figs. 1A-5D are not restricted to these specific embodiments. Any features relating to the support elements and / or the surface parts and / or the top parts, and the components comprised therein and mentioned in relation to the dental implant of Figs. 1 A-1 D, such as dimensions, the number and / or the combination of the support elements and / or surface parts, are thus also applicable to the dental implant described in relation to Figs. 2A-5D.

[0090] The use of the terms “first”, “second”, “third” and “fourth”, “primary”, “secondary”, “tertiary” etc. does not imply any particular order but are included to identify individual elements. Moreover, the use of the terms “first”, “second”, “third” and “fourth”, “primary”, “secondary”, “tertiary” etc. does not denote any order or importance, but rather the terms “first”, “second”, “third” and “fourth”, “primary”, “secondary”, “tertiary” etc. are used to distinguish one element from another. Note that the words “first”, “second”, “third” and “fourth”, “primary”, “secondary”, “tertiary” etc. are used here and elsewhere for labelling purposes only and are not intended to denote any specific spatial or temporal ordering. Furthermore, the labelling of a first element does not imply the presence of a second element and vice versa.

[0091] It is to be noted that the word "comprising" does not necessarily exclude the presence of other elements or steps than those listed. It is to be noted that the words "a" or "an" preceding an element do not exclude the presence of a plurality of such elements.

[0092] Although features have been shown and described, it will be understood that they are not intended to limit the claimed disclosure, and it will be made obvious to those skilled in the art that various changes and modifications may be made without departing from the scope of the claimed disclosure. The specification and drawings are, accordingly, to be regarded in an illustrative rather than restrictive sense. The claimed disclosure is intended to cover all alternatives, modifications, and equivalents.

Claims

CLAIMS1 . A dental implant, the dental implant comprising:- an implant body having a main axis extending from a coronal end to an apical end of the implant body;- a receptacle for receiving a secondary body; and- one or more support elements, wherein the one or more support elements are arranged on the implant body and comprise a first support element extending along the main axis and having a first primary support surface and a first secondary support surface, the dental implant having one or more bioadhesive cavities arranged between the first primary support surface and the first secondary support surface of the first support element, wherein a first primary bioadhesive cavity of the one or more bioadhesive cavities is formed at least by a first primary concave surface part of the implant body and at least one of the first primary support surface and the first secondary support surface, wherein the first primary concave surface part is concave along the main axis.

2. The dental implant according to claim 1 , wherein the one or more support elements comprise a second support element extending along the main axis and having a second primary support surface and a second secondary support surface, and wherein the one or more bioadhesive cavities comprise a second primary bioadhesive cavity formed at least by a second primary concave surface of the implant body, the second primary support surface and a secondary support surface of an adjacent support element.

3. The dental implant according to any one of the previous claims, wherein the one or more bioadhesive cavities comprise a first secondary bioadhesive cavity defined by a first secondary concave surface part of the implant body with a primary edge separating the first primary concave surface part and the first secondary concave surface part.

4. The dental implant according to claim 3, wherein the first secondary concave surface part is concave along the main axis.

5. The dental implant according to claims 3 to 4, wherein the first primary edge extends between a primary support surface and a secondary support surface of one or more support elements.

6. The dental implant according to any one of claims 3 to 5, wherein the first secondary concave surface part of the implant body is arranged between the first primary concave surface part and the coronal end of the implant body along the main axis.

7. The dental implant according to any one of claims 3 to 6, wherein the one or more bioadhesive cavities comprise a first tertiary bioadhesive cavity formed at least by a first tertiary concave surface part of the implant body and a first secondary edge separating the first secondary concave surface part and the first tertiary concave surface part.

8. The dental implant according to claim 7, wherein the tertiary concave surface part is concave along the main axis.

9. The dental implant according to any one of the previous claims, wherein the primary support surface(s) and the secondary support surface(s) are radial surfaces.

10. The dental implant according to any one of the previous claims, wherein the first primary support surface and the first secondary support surface are connected via a first boundary surface.

11. The dental implant according to claim 10, wherein the first boundary surface is a tangential surface of the implant body.

12. The dental implant according to claim 10 or 11 , wherein the connecting surface of the support element is the widest part of the dental implant.

13. The dental implant according to any one of claims 10 to 11 , wherein the first boundary surface of the first support element curves at the apical end of the dental implant, so that the connecting surface forms the tangential surface parallel to the main axis of the implant body and a base surface at the apical end of the implant body.

14. The dental implant according to any one of the previous claims, wherein the one or more support elements is / are arranged at the apical end of the dental implant.

15. The dental implant according to any one of the previous claims, wherein the one or more support elements extend from the apical end towards the coronal end over at least 50% of the length of the dental implant.

16. The dental implant according to any one of the previous claims, wherein the one or more support elements are protrusions.

17. The dental implant according to any one of the previous claims, wherein the dental implant comprises a plurality of support elements.

18. The dental implant according to claim 17, wherein the plurality of support elements is equidistantly distributed around the main axis of the implant body.

19. The dental implant according to claim 17, wherein the plurality of support elements is unequally distributed around the main axis of the implant body.

20. The dental implant according to any one of the previous claims, wherein the radius of the dental implant is larger at a coronal end of the concave surface part than at an apical end of the concave surface part.

21. The dental implant according to any one of the previous claims, wherein an outer surface of the dental implant is threadless.

Images