A bionic neck curve aesthetic implant

Abstract

The present invention discloses a bionic neck curve aesthetic implant, which comprises: a base part, a bionic neck, and an implant part arranged in sequence from top to bottom; the bionic neck comprises: a platform transfer area and a receiving area with a protrusion on the coronal side of the mesiodistal side and a depression on the root side of the labial cheek side; the platform transfer area is an asymmetric conical surface with a diameter gradually decreasing from top to bottom, and the receiving area is connected to the bottom end of the platform transfer area and horizontally faces outward; the upper end of the implant part also protrudes on the coronal side of the mesiodistal side and is depressed on the root side of the labial cheek side, and the upper section of the implant part is provided with a fine thread. The present invention adopts a bionic curve neck thread structure to replace the planar traditional implant neck design, which is more consistent with the alveolar bone contour, makes greater use of the alveolar bone and bone height of the mesiodistal side wall of the extraction socket, and maintains the natural morphology of the soft tissue to achieve the best aesthetic effect.

Description

Technical Field

[0001] The invention relates to the technical field of oral dental implants, and in particular to a bionic neck curve aesthetic implant. Background Art

[0002] With the rapid development of economy, society and oral implant technology, dental implants have become the first choice for more and more patients to treat edentulous or missing teeth. The key to the success rate of oral implant surgery and the long-term life of the implant lies in the bone integration between the implant surface and the alveolar bone. Therefore, the contact area between the alveolar bone and the implant surface should be increased as much as possible to obtain a good bone integration effect and thus improve the success rate of implantation. In particular, for the restoration of the aesthetic area of ​​the upper front teeth, the aesthetic effect should be guaranteed while restoring the occlusal function. Studies have shown that the absorption of alveolar bone after edentulous teeth will lead to the loss of gingival papillae and changes in gingival morphology, which is a major challenge for the aesthetic restoration of the upper front teeth.

[0003] The normal alveolar process is concave toward the root on the labial and buccal sides and convex toward the crown on the mesiodistal side, which is consistent with the enamel-cementum junction curve at the neck of the tooth, that is, the shape of the "cervical curve". A large number of periodontal ligament fibers are attached to the two to provide strong support. In single-rooted teeth, especially in the anterior area, the curvature of the cervical curve increases, so more periodontal ligament fibers can be used to help maintain the stability of the anterior teeth. In the alveolar bone resorption after the extraction of the anterior teeth, there is obvious vertical bone resorption on the labial and palatal alveolar ridge tops. The vertical bone resorption of the labial alveolar ridge top is more obvious than that of the palatal side. At this time, the structure of the above physiological curve is more obvious. The natural gingiva is pink, with thin edges, forming an arc concave toward the root on the labial and buccal sides. It convexes toward the crown in the mesiodistal and fills the gap between adjacent teeth to form a gingival papilla. The existence of the gingival papilla can fill the "black triangle" area of ​​the adjacent teeth after implant restoration, and its shape depends on the height of the mesiodistal alveolar interval of the alveolar socket below. Therefore, maintaining the height of the alveolar interval has an important influence on aesthetics.

[0004] The hollow short implant provided by publication number CN101366664A is the same as most traditional implants. The neck structure is a plane, which cannot match the contour curve of the alveolar bone after implantation. Therefore, it is often implanted deeply, sacrificing the residual alveolar bone height at the mesiodistal position.

[0005] Traditional implants, such as the platform transfer described in the design of CN102357045A, are achieved by installing an abutment with a root diameter smaller than the crown diameter of the implant, which serves as a soft tissue stop to form a more reliable gingival epithelial cuff closure, avoiding microleakage and bone resorption. However, the resulting neck shape is close to a plane, losing the physiological structure of the gingival papilla and the support of the lower alveolar process, which has an adverse effect on aesthetics. Summary of the invention

[0006] The present invention aims to simulate the natural cementoenamel junction curve to maintain the soft tissue morphology and achieve a more aesthetic effect.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a bionic neck curve aesthetic implant, which comprises: a base part, a bionic neck, and an implant body part which are arranged in sequence from top to bottom; the bionic neck comprises: a platform transfer area and a soft tissue receiving area which are convex in the coronal direction of the mesiodistal side and concave in the root direction of the labial and buccal side; the platform transfer area is an asymmetric conical surface with a diameter gradually decreasing from top to bottom, and the soft tissue receiving area is connected to the bottom end of the platform transfer area and extends horizontally outward; the upper end of the implant body part also convex in the coronal direction of the mesiodistal side and concave in the root direction of the labial and buccal side, and the upper section of the implant body part is provided with fine threads.

[0008] Preferably, the base portion includes: a crown, and a first transition zone and a second transition zone arranged below the crown; the first transition zone is an asymmetric cone that gradually increases from top to bottom, and the second transition zone allows a smooth transition between the first transition zone and the platform transfer zone.

[0009] Preferably, the upper section of the implant body has a height of 1-3 mm and a thread pitch of 0.1-1 mm.

[0010] Preferably, the height difference between the mesiodistal side and the labial and buccal side of the bionic neck is 1-2 mm.

[0011] Preferably, the lower section of the implant body is provided with a self-tapping groove with a depth of 1 / 3 of the diameter of the implant body.

[0012] Preferably, there are two self-tapping grooves which are symmetrically arranged.

[0013] Preferably, the bottom end of the base portion is connected with an insertion portion, a base insertion groove is arranged at the center of the bionic neck, and the insertion portion is inserted into the base insertion groove.

[0014] Preferably, the surface of the platform transfer zone may be provided with a coating for promoting the attachment of hemidesmosomes to the epithelium.

[0015] Preferably, the bionic neck and the implant body are an integrated structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) It makes full use of the alveolar bone contour after tooth extraction, increases the contact area between the implant and the alveolar bone, and is beneficial to bone integration.

[0018] (2) Promote the formation of physiological curves of the gums to enhance the aesthetic effect.

[0019] (3) The physiological curved platform transfer reduces microleakage and bone resorption.

[0020] (4) The tapered design reduces the risk of labial perforation during implantation.

[0021] (5) Self-tapping blades and self-tapping grooves are provided to collect bone debris to participate in new bone formation and facilitate clinical operations.

[0022] (6) Microthreads are set on the upper part of the implant to reduce marginal bone resorption.

[0023] (7) The platform transfer zone is provided with a coating that promotes the attachment of hemidesmosomes to the junctional epithelium. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the bionic neck curve aesthetic implant of the present invention.

[0025] Figure 2 This is a schematic diagram of implantation of the bionic neck curve aesthetic implant of the present invention.

[0026] Figure 3 It is a front view of the implant structure after being exploded according to the present invention.

[0027] Figure 4 It is a left side view after the implant structure of the present invention is decomposed.

[0028] Figure 5 It is a top view of the implant of the present invention.

[0029] Figure 6 It is a diagram of the internal structure of the implant of the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 The figure shows a schematic diagram of the structure of the bionic neck curve aesthetic implant of the present invention. The implant comprises: a base portion 30, a bionic neck 10, and an implant body 20 arranged in sequence from top to bottom. The bionic neck 10 comprises: a platform transfer area 11 and a soft tissue receiving area 12 which are protruding in the coronal direction of the mesiodistal side and recessed in the root direction of the labial cheek side; the platform transfer area 11 is an asymmetric cone surface which gradually decreases from top to bottom, and the soft tissue receiving area 12 is connected to the bottom end of the platform transfer area 11 and extends horizontally outward; the upper end of the implant body 20 is also protruding in the coronal direction of the mesiodistal side and recessed in the root direction of the labial cheek side, and the upper section 21 of the implant body 20 is provided with fine threads.

[0032] Figure 1The mesiodistal side is roughly the left and right side, and the labiobuccal side is roughly the front and back side. The mesiodistal side of the bionic neck 10 is convex toward the crown, and the labiobuccal side is concave toward the root, forming a bionic curve. The bionic curve is used to simulate the shape of natural gums. The bionic curve is a smooth and continuous curve. Similar to the bionic curve formed by the bionic neck 10, the upper end of the implant body 20 also forms a bionic curve. The implant body 20 adopts a threaded structure with a bionic curve at the upper end to replace the flat traditional implant neck design, which is more consistent with the alveolar bone contour and makes greater use of the alveolar bone and bone height of the mesiodistal side wall of the extraction socket, thereby solving the problem of inconsistency between the implant neck morphology and the alveolar bone contour morphology during the implantation of anterior teeth implants, and the alveolar bone morphology after tooth extraction (immediate implantation) or after healing and absorption (delayed implantation).

[0033] The base portion 30 includes: a crown portion 31, and a first transition zone 32 and a second transition zone 33 arranged below the crown portion 31; the first transition zone 32 is an asymmetric cone that gradually increases from top to bottom, and the second transition zone 33 allows a smooth transition between the first transition zone 32 and the platform transfer zone 11.

[0034] Figure 2 This is a schematic diagram of implantation of the implant of the present invention. Figure 1 and Figure 2 The crown part 31 of the base part 30 is used to connect with the crown, and a cutting groove 34 for positioning the crown is arranged along the axial direction. The bionic neck 10 is used for aesthetic restoration and is a gingival region. The implant body 20 is implanted in the alveolar bone.

[0035] The outer diameter of the crown 31 is relatively small, and the first transition zone 32 gradually increases from top to bottom, so as to realize a smooth transition between the base 30 and the bionic neck 10. In the use state, the soft tissue is located above the soft tissue receiving area 12, and the alveolar bone is located below the soft tissue receiving area 12. The platform transfer area 11 plays a role in supporting the soft tissue. When the soft tissue is attached to the platform transfer area 11, the soft tissue receiving area 12 is horizontally outward, which forms a barrier to the soft tissue, which is conducive to fixing the soft tissue to the platform transfer area 11.

[0036] See also Figure 2 The neck epithelial junction 41 is located above the soft tissue receiving area 12, and the soft tissue receiving area 12 can form a barrier to the soft tissue. After the soft tissue is fixed to the platform transfer area 11, the bionic curve is conducive to the aesthetic restoration of the gingival morphology. Figure 2 Also shown are the mesial / distal alveolar bone 42 and the labial alveolar bone 44 , as well as the labial gingiva 43 located outside the labial alveolar bone 44 .

[0037] In some embodiments, the distance between the lowest point and the highest point of the bionic curve is 1-2 mm. The platform transfer zone 11 is set to be about 1-3 mm in height with reference to the biological width, and gradually shrinks from top to bottom. When it reaches the junction with the implant body 20, the diameter is smaller than the upper section 21 of the implant body 20. The difference between the widest and narrowest parts of the bionic neck 10 is 0.1-2 mm.

[0038] The implant body 20 is a conical structure to adapt to implantation in the anterior teeth area. The outer wall of the implant body 20 is provided with a thread. Among them, the outer wall of the upper section 21 of the implant body 20 is provided with a microthread, which can increase the contact area between the implant body 20 and the bone tissue at the edge of the cortical bone where stress is concentrated, and reduce the marginal bone absorption of the implant under functional load. In some embodiments, the height of the upper section 21 of the implant body 20 is 1-3mm, and the pitch is 0.1-1mm. The pitch of the outer wall of the middle section 22 of the implant body 20 is 1-2mm. The height of the highest point of the middle section 22 of the implant body 20 from the bottom end of the implant body 20 is about 6-12mm, and the diameter of the implant at the widest point of the thread is about 3-6mm. Two symmetrical self-tapping grooves are axially arranged in the lower section 23 of the implant body 20, and the bone wall can be cut by the self-tapping blade to tap the thread by itself, which has a guiding effect when the implant is screwed in during surgery to facilitate implantation. The depth of the self-tapping groove is about 1 / 3 of the diameter of the implant body 20. While facilitating clinical operations, the bone tissue debris cut by the self-tapping blade enters the self-tapping groove to participate in the new bone formation after implantation.

[0039] Figure 3 This is the main view after the implant structure is exploded. Figure 4 This is the left view after the implant structure is exploded. Figure 5 Top view of the implant. Figure 6 The bottom end of the base portion 30 is connected to the insertion portion 35 (see Figure 6 The center of the bionic neck 10 is provided with a base insertion groove 11C and a central screw hole 13 provided in the base insertion groove 11C (see also Figure 3 and Figure 5 ), Figure 5 Also shown are the central screw hole outer diameter 11A, the central screw hole thread 11B, the bionic neck mesiodistal outer diameter 12A and the bionic neck lingual outer diameter 13A. Figure 5 It can be seen that the cross section of the bionic neck 10 is circular. The insertion portion 35 is inserted into the base insertion groove 11C, and then the central screw 36 can be screwed into the central screw hole 13. The integrated design of the platform transfer structure and the implant body of the present invention avoids secondary damage to the soft tissue caused by the installation and removal of the healing base, creating better conditions for the shaping of the soft tissue.

[0040] In some embodiments, by designing the surface coating of the platform transfer zone 11, it is possible to promote the attachment of hemidesmosomes of the junctional epithelium to the implant surface, thereby making the soft tissue bond more firmly.

[0041] To address the problem of inconsistency between the implant neck morphology and the alveolar bone contour morphology during anterior dental implant implantation, and the alveolar bone morphology after tooth extraction (immediate implantation) or after healing and absorption (delayed implantation), the present invention adopts a bionic curved neck thread structure to replace the flat traditional implant neck design, which is more consistent with the alveolar bone contour and makes greater use of the alveolar bone and bone height on the mesiodistal side walls of the extraction socket.

[0042] The present invention can make the soft tissue after molding also form a "neck curve" structure with the labial and buccal sides concave toward the root and the mesiodistal sides convex toward the crown. On the basis of forming a reliable gingival epithelial cuff closure, the appearance is more in line with the physiological state.

[0043] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A bionic neck curve aesthetic implant, characterized in that: The invention comprises: a base portion (30), a bionic neck (10), and an implant body (20) which are arranged in sequence from top to bottom; the bionic neck (10) comprises: a platform transfer area (11) which is protruding in the coronal direction on the mesiodistal side and concave in the root direction on the labial and buccal side, and a soft tissue receiving area (12); the platform transfer area (11) is an asymmetric conical surface with a diameter gradually decreasing from top to bottom, and when the platform transfer area (11) reaches the junction with the implant body (20), the diameter is smaller than the upper section (21) of the implant body (20), and the soft tissue receiving area (12) is connected to the bottom end of the platform transfer area (11) and extends horizontally outward; the upper end of the implant body (20) is also protruding in the coronal direction on the mesiodistal side and concave in the root direction on the labial and buccal side, and the upper section (21) of the implant body (20) is provided with a fine thread; The base portion (30) comprises: a crown portion (31), and a first transition zone (32) and a second transition zone (33) arranged below the crown portion (31); the first transition zone (32) is an asymmetric cone that gradually increases from top to bottom, and the second transition zone (33) enables a smooth transition between the first transition zone (32) and the platform transfer zone (11); The height difference between the mesiodistal side of the bionic neck (10) and the labial and buccal side is 1-2 mm.

2. The bionic neck curve aesthetic implant according to claim 1, characterized in that: The upper section (21) of the implant body (20) has a height of 1-3 mm and a thread pitch of 0.1-1 mm.

3. The bionic neck curve aesthetic implant according to claim 1, characterized in that: The lower section (23) of the implant body (20) is provided with a self-tapping groove with a depth of 1 / 3 of the diameter of the implant body.

4. The bionic neck curve aesthetic implant according to claim 3, characterized in that: There are two self-tapping grooves which are symmetrically arranged.

5. The bionic neck curve aesthetic implant according to claim 1, characterized in that: The bottom end of the base portion (30) is connected to an insertion portion (35), a base insertion groove (11C) is provided in the center of the bionic neck (10), and the insertion portion is inserted into the base insertion groove (11C).

6. The bionic neck curve aesthetic implant according to claim 1, characterized in that: The surface of the platform transfer zone (11) is provided with a coating for promoting the attachment of hemidesmosomes to the epithelium.

7. The bionic neck curve aesthetic implant according to claim 1, characterized in that: The bionic neck (10) and the implant body (20) are an integrated structure.

Images