Temporary titanium abutment with internal and external rotation stopping structures

Abstract

The utility model belongs to the field of basic research of oral implant restoration, and particularly relates to a titanium temporary abutment with internal and external rotation stopping structures, which comprises a conical abutment connecting part and a dental crown connecting part, the conical abutment connecting part is of a connecting hole structure with an annular inner wall, and the inner wall of the conical abutment connecting part is provided with the internal rotation stopping structure. The titanium temporary abutment and the conical abutment connected to the conical abutment connecting part form inner side rotation stopping connection, so that the dental crown and the titanium temporary abutment are prevented from rotating relatively, and the dental crown is prevented from loosening and falling off. The dental crown connecting part is of a connecting shaft structure with an annular outer wall, and the outer wall of the dental crown connecting part is provided with an outer rotation stopping structure which is used for forming outer side rotation stopping connection between the titanium temporary abutment and a dental crown connected to the dental crown connecting part to prevent relative rotation between the titanium temporary abutment and the conical abutment; therefore, the threaded connection between the temporary titanium abutment and the conical abutment is prevented from loosening.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the basic research field of oral cavity implantation repair, and particularly relates to a titanium temporary base with internal and external rotation-stopping structures. BACKGROUND

[0002] At present, the main implantation repair of edentulous jaw in clinic has two kinds: traditional two-section base repair and conical base repair. The upper end of the conical base is indirectly connected with the crown through the titanium temporary base. The titanium temporary base, as a new type of base, solves the problem of connecting the crown with the conical base in the process of immediate repair of the implantation repair body in structure. Compared with the traditional base repair, the titanium temporary base moves the base-crown interface from the subgingival to the gum or above the gum through the connection with the conical base, is far away from the implant-bone interface, is beneficial to the maintenance and intervention in clinic, and has greater significance for the long-term success of the implantation repair body.

[0003] However, with the clinical application of the titanium temporary base, some problems are gradually exposed. The secondary screw connecting the titanium temporary base and the conical base is small, and the tightening force is only 15N to 20N. The upper repair structure of the edentulous jaw often appears loose of the secondary central screw connecting the titanium temporary base and the conical base under the complex oral mastication environment. If not handled in time, the primary central screw connecting the conical base and the implant may also be loose, and the secondary central screw may be broken and the screw bolt may be damaged, finally causing the upper repair structure of the edentulous jaw to be loose, fall off and break. The reason for the loose of the secondary central screw connecting the conical base and the titanium temporary base is that the smooth outer taper surface of the upper round table of the conical base and the smooth inner taper surface of the connecting hole corresponding to the round table of the titanium temporary base are connected only through a small secondary central screw to connect the two bases. The smooth friction connection between the two bases concentrates the mastication stress on the small secondary central screw in the complex oral mastication process of the edentulous jaw patient, finally causing the screw to be loose and broken. The adhesive surface of the crown and the titanium temporary base relatively rotates due to the smoothness in the complex oral mastication process of the edentulous jaw patient, and the crown and the titanium temporary base are prone to be loose and fall off. SUMMARY

[0004] The utility model overcomes the defect that the existing implantation repair body based on the titanium temporary base is prone to be loose and even damaged, and provides a titanium temporary base with internal and external rotation-stopping structures, so as to maintain the stability of the implantation repair body and improve the service life of the implantation repair body.

[0005] In order to achieve the above-mentioned purposes, the utility model includes the following technical solutions:

[0006] The utility model provides a titanium interim abutment with inner and outer rotation-stopping structures, which comprises a tapered abutment connecting part and a crown connecting part, the tapered abutment connecting part is a connecting hole structure with an annular inner wall, the inner wall of the tapered abutment connecting part has an inner rotation-stopping structure to form an inner rotation-stopping connection between the titanium interim abutment and a tapered abutment connected to the tapered abutment connecting part; the crown connecting part is a connecting shaft structure with an annular outer wall, the outer wall of the crown connecting part has an outer rotation-stopping structure to form an outer rotation-stopping connection between the titanium interim abutment and a crown connected to the crown connecting part.

[0007] Preferably, the crown connecting part comprises a plug-in section and a fixing section, the plug-in section is used for plugging into the crown, and the fixing section is used for connecting to the open end of the crown; the outer rotation-stopping structure is arranged on the outer wall of the plug-in section.

[0008] Preferably, the outer rotation-stopping structure is a plurality of outer protrusions arranged on the outer wall of the plug-in section, the outer protrusions are used for forming a concave-convex cooperation with grooves in the inner wall of the crown, thereby preventing the titanium interim abutment from rotating relative to the crown.

[0009] Preferably, the outer protrusions are uniformly distributed along the circumference of the crown connecting part and extend along the axial direction of the crown connecting part.

[0010] Preferably, the plug-in section comprises a cylindrical section with equal diameters and a tapered section with a linearly increasing diameter, the outer protrusions extend from the cylindrical section to the tapered section, and the side walls of the outer protrusions intersect with the outer wall of the tapered section.

[0011] Preferably, the outer protrusions have a semicircular cross section.

[0012] Preferably, the tapered abutment connecting part is a tapered hole with a linearly changing diameter, the inner rotation-stopping structure is a plurality of inner protrusions arranged on the inner wall of the tapered abutment connecting part, the inner protrusions are uniformly distributed along the circumference of the tapered abutment connecting part and extend along the generatrix direction of the tapered abutment connecting part.

[0013] The advantage of the present invention is that the crown connection portion of the titanium temporary abutment is provided with an external anti-rotation structure, thereby preventing the crown and the titanium temporary abutment from rotating relative to each other, and preventing the crown from loosening and falling off. The conical abutment connection portion of the titanium temporary abutment is provided with an internal anti-rotation structure, which prevents the titanium temporary abutment and the conical abutment from rotating relative to each other, thereby avoiding loosening of the threaded connection between the titanium temporary abutment and the conical abutment, maintaining the stability of the conical abutment and the titanium temporary abutment, and improving the life of the implant restoration. During the complex oral chewing process of edentulous patients, the chewing rotational stress can be dispersed on the anti-rotation structure evenly distributed along the rotation axis, greatly reducing the rotational stress of the secondary central screw, thereby reducing the possibility of loosening of the secondary central screw, and having great clinical practical significance for reducing the serious consequences of loosening, falling off and breaking of the upper structure of the edentulous implant restoration caused by the breakage of the first and second central screws or the damage of the screw bolt channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded schematic diagram of the utility model in use.

[0015] Figure 2 This is a three-dimensional diagram of the titanium temporary abutment of the present invention.

[0016] Figure 3 This is a stereoscopic view of the titanium temporary abutment of the present invention from another perspective.

[0017] Figure 4 Front view of the titanium temporary abutment.

[0018] Among them: 1 conical base connection part, 11 internal anti-rotation structure, 2 crown connection part, 21 external anti-rotation structure, 22 plug-in section, 221 cylindrical section, 222 conical section, 23 fixing section, 3 through hole, 100 conical base, 101 round table, 200 crown. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings. The enumerated embodiments may help those skilled in the art to better understand the present invention, but are not intended to limit the present invention in any form.

[0020] See Figures 1-4As shown, the utility model provides a titanium temporary abutment with inner and outer rotation-stopping structures, which comprises a tapered abutment connecting part 1 and a crown connecting part 2 arranged at two ends of the titanium temporary abutment respectively, the tapered abutment connecting part 1 is a connecting hole structure with an annular inner wall, the tapered abutment connecting part 1 is used to be connected to a tapered abutment 100, the inner wall of the tapered abutment connecting part 1 is provided with an inner rotation-stopping structure 11, so that the titanium temporary abutment and the tapered abutment 100 form an inner rotation-stopping connection. The crown connecting part 2 is a connecting shaft structure with an annular outer wall, the crown connecting part 2 is used to be connected to a crown 200, and the outer wall of the crown connecting part 2 is provided with an outer rotation-stopping structure 21, so that the titanium temporary abutment and the crown 200 connected to the crown connecting part 2 form an outer rotation-stopping connection.

[0021] The crown connecting part 2 comprises a plug-in section 22 and a fixing section 23, the plug-in section 22 is used to be plugged into the crown 200, the fixing section 23 is used to be connected to an open end of the crown 200, and the outer rotation-stopping structure 21 is arranged on the outer wall of the plug-in section 22. The outer rotation-stopping structure 21 is a plurality of outer protrusions arranged on the outer wall of the plug-in section 22, the outer protrusions are used to form a concave-convex cooperation with grooves on the inner wall of the crown 200, so as to prevent the titanium temporary abutment from rotating relative to the crown 200. The outer protrusions are uniformly distributed along the circumference of the crown connecting part 2 and extend along the axial direction of the crown connecting part 2. The plug-in section 22 comprises a cylindrical section 221 with equal diameter and a tapered section 222 with linearly increasing diameter, the outer protrusions extend from the cylindrical section 221 to the tapered section 222, and the side walls of the outer protrusions extend to the outer wall of the tapered section 222.

[0022] The upper end of the conical abutment 100 is a circular table 101, and the upper end face of the circular table 101 is provided with a threaded hole extending along the central axis. The conical abutment connecting part 1 is a conical hole with a linearly changing diameter, and the circular table 101 of the conical abutment 100 is sleeved with the conical abutment connecting part 1 at the lower end of the titanium temporary abutment. The sleeving fit of the circular table 101 and the conical abutment connecting part 1 restricts the displacement of the conical abutment 100 and the titanium temporary abutment in the radial direction. The titanium temporary abutment is also provided with a through hole 3 extending along the central axis thereof, and the secondary central screw passes through the through hole 3 of the titanium temporary abutment and is connected with the threaded hole of the conical abutment 100. The through hole 3 includes a first through hole and a second through hole arranged in an upper and lower manner, the diameter of the first through hole is smaller than that of the second through hole, and a step is formed between the first through hole and the second through hole, so that the nut of the secondary central screw abuts against the step of the titanium temporary abutment, thereby axially fixing the conical abutment 100 and the titanium temporary abutment. The inner stop rotation structure 11 is a plurality of inner protrusions arranged on the inner wall of the conical abutment connecting part 1, and the inner protrusions are uniformly distributed along the circumferential direction of the conical abutment connecting part 1 and extend along the generatrix direction of the conical abutment connecting part 1. The outer wall of the circular table 101 of the conical abutment 100 is provided with a groove corresponding to the inner protrusion, so that the conical abutment 100 and the titanium temporary abutment form a stop rotation connection. In the embodiment, the cross sections of the outer protrusions and the inner protrusions are semicircular. In other embodiments, the cross sections of the outer protrusions and the inner protrusions can also be rectangular, triangular, etc., which can bidirectionally stop rotation.

[0023] It should be noted that the conical abutment 100 and the crown 200 are prior art, and the conical abutment 100 and the crown 200 are respectively provided with a stop rotation part corresponding to the inner stop rotation structure 11 and the outer stop rotation structure 21. The inner stop rotation structure 11 and the outer stop rotation structure 21 of the embodiment are inner protrusions and outer protrusions, respectively, and the corresponding structure is a groove as the stop rotation part. In the prior art, the stop rotation part of the conical abutment 100 and the crown 200 has other structures, such as protrusions or concave points, and the specific structures of the inner stop rotation structure 11 and the outer stop rotation structure 21 on the titanium temporary abutment can be changed accordingly.

[0024] The inner protrusions and the outer protrusions of the embodiment are four, and in other embodiments, the inner protrusions and the outer protrusions can also be other numbers, at least one, and can also be two, three or more than five, corresponding to the specific structure of the stop rotation part of the conical abutment 100 and the crown 200.

[0025] The utility model discloses a tooth crown connecting portion 2 of titanium interim abutment is equipped with outer rotation -stopping structure 21, thereby prevent tooth crown 200 and titanium interim abutment relative rotation, prevent the loosening of tooth crown 200 and fall off. The tapered abutment connecting portion 1 of titanium interim abutment is provided with inner rotation -stopping structure 11, prevents the relative rotation between titanium interim abutment and tapered abutment 100, further avoids the loosening of the thread connection between titanium interim abutment and tapered abutment 100, maintains the stability of tapered abutment 100 and titanium interim abutment, improves the life of implant restoration. In the complex oral cavity mastication process of edentulous jaw patient, the mastication rotation stress can be dispersed on the inner and outer rotation -stopping structure along the rotation axis, greatly reduces the rotation stress of secondary central screw, thereby reduces the loosening possibility of secondary central screw, reduces the serious consequence that the loosening and fall off of the upper structure of edentulous jaw implant restoration caused by the breakage of primary and secondary central screw or the damage of screw bolt, and has greater clinical practical significance.

[0026] The remaining unstated parts are prior art.

[0027] The above examples only illustrate the technical idea of the utility model, and cannot limit the protection scope of the utility model, and any improvement and equivalent replacement made on the basis of the technical scheme according to the technical idea of the utility model all fall within the protection scope of the utility model.

Claims

1. A titanium temporary abutment with an internal and external anti-rotation structure, characterized in that: It includes a conical abutment connection part and a crown connection part, the conical abutment connection part is a connection hole structure with an annular inner wall, the inner wall of the conical abutment connection part has an inner anti-rotation structure, so that the titanium temporary abutment and the conical abutment connected to the conical abutment connection part form an inner anti-rotation connection; the crown connection part is a connection shaft structure with an annular outer wall, the outer wall of the crown connection part has an outer anti-rotation structure, so that the titanium temporary abutment and the crown connected to the crown connection part form an outer anti-rotation connection.

2. The titanium temporary abutment with an internal and external anti-rotation structure according to claim 1, characterized in that: The crown connection portion includes an inserting section and a fixing section. The inserting section is used to be inserted into the crown, and the fixing section is used to be connected to the open end of the crown. The external anti-rotation structure is arranged on the outer wall of the inserting section.

3. The titanium temporary abutment with an internal and external anti-rotation structure according to claim 2, characterized in that: The external anti-rotation structure is a plurality of external convex strips arranged on the outer wall of the insertion section, and the external convex strips are used to form a concave-convex fit with the grooves on the inner wall of the crown, thereby preventing the titanium temporary base from rotating relative to the crown.

4. The titanium temporary abutment with an internal and external anti-rotation structure according to claim 3, characterized in that: The outer convex strips are evenly distributed along the circumference of the crown connecting portion and extend along the axial direction of the crown connecting portion.

5. The titanium temporary abutment with internal and external anti-rotation structures according to claim 3, characterized in that: The plug-in section includes a cylindrical section with the same diameter and a conical section with a linearly increasing diameter. The outer convex strip extends from the cylindrical section to the conical section, and the side wall of the outer convex strip extends and intersects with the outer wall of the conical section.

6. The titanium temporary abutment with internal and external anti-rotation structures according to claim 3, characterized in that: The cross section of the outer convex strip is semicircular.

7. The titanium temporary abutment with internal and external anti-rotation structures according to claim 1, characterized in that: The conical base connection portion is a conical hole with a linearly changing diameter, and the inner anti-rotation structure is a plurality of inner convex strips arranged on the inner wall of the conical base connection portion. The inner convex strips are evenly distributed along the circumference of the conical base connection portion and extend along the busbar direction of the conical base connection portion.

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