WO2021233145A1

WO2021233145A1 - Implant denture having spring damper flexible base platforms

Info

Publication number: WO2021233145A1
Application number: PCT/CN2021/092446
Authority: WO
Inventors: 程国辉
Original assignee: 程国辉
Priority date: 2020-05-19
Filing date: 2021-05-08
Publication date: 2021-11-25
Also published as: CN111568578A; CN111568578B

Abstract

Disclosed is an implant denture having spring damper flexible base platforms, the implant denture comprising an implant (1), a lower flexible base platform (2), an upper flexible base platform (3), a fixing screw (4), a damper (5), a base platform cover (6) and an implant crown (7). The flexible base platforms overcome the defects of a traditional base platform and have the function of buffering occlusal force. Damping values of natural teeth and the implant (1) in the mouth of a patient can be measured clinically, and the suitable damper (5) is selected to simulate natural teeth to the greatest extent, so as to achieve optimal occlusal contact and occlusal force.

Description

Implant denture with telescopic abutment with spring damper

Technical field

The invention belongs to the technical field of denture structures, and particularly relates to an implant denture with a spring damper telescopic abutment.

Background technique

In stomatology, implant restorations made after part or all of the upper and lower teeth are missing are collectively called implant dentures. Traditional implant dentures are usually composed of implants, abutments and implant crowns. Due to the rigid connection between these components and the osseointegration of the implant and the alveolar bone, stress concentration occurs in the bone tissue around the implant neck. Cause bone resorption and damage to implants and abutments. In addition, due to the lack of elasticity of the rigidly connected implant dentures, the patient's implant crown is lower than the normal natural teeth in clinical practice, resulting in the patient's bite bite inaccurately, and contact with the hard bite. Even this still cannot be completely avoided. The problem of stress concentration.

Summary of the invention

In order to solve the above problems, the object of the present invention is to provide an implant denture with a spring damper telescopic abutment to simulate the vertical and lateral elastic movement of natural teeth, thereby alleviating occlusal pressure and reducing stress concentration.

In order to achieve the above objective, the implant denture with a spring damper telescopic abutment provided by the present invention includes an implant, a lower telescopic abutment, an upper telescopic abutment, a fixing screw, a damper, abutment cover, and an implant crown; among them, The implant has a cylindrical structure with external threads formed on the outer circumferential surface, which are implanted in the bone tissue of the patient’s oral cavity by using the external threads, and the middle of the top surface is recessed downward to form a central hole, and the bottom surface of the central hole The middle part is recessed downward to form a screw hole; the middle part of the lower telescopic abutment is formed with an axial through hole, the middle part of the outer peripheral surface protrudes to form an annular step, and the lower part is inserted into the central hole on the implant; fixing screw The upper part is located inside the axial through hole of the lower telescopic abutment, and the lower part is threaded into the screw hole of the implant, thereby fixing the lower telescopic abutment on the implant; the damper is ring-shaped, and the bottom surface is located in the center hole The outer part is recessed inward to form a ring-shaped telescopic base setting groove-the ring-shaped telescopic base setting groove is clamped outside the upper end of the lower telescopic base, and the lower end of the damper is located on the ring step of the lower telescopic base; the upper part; An axial center hole is formed on the telescopic base, which can be moved up and down on the outer peripheral surface of the damper and the middle of the lower telescopic base; the edge of the base cover is connected to the axial center hole on the upper telescopic base At the upper port, a through hole is formed in the center; the crown of the dental implant is in the shape of a dome, which is fixed on the upper part of the upper telescopic abutment and the outside of the abutment cover, and an axial hole is formed in the center of the top surface, inside the axial hole Filled with resin.

An external thread is formed on the edge of the abutment cover, and the upper port of the axial center hole of the upper telescopic abutment is formed with an internal thread that matches the external thread on the abutment cover.

A plurality of inner positioning planes are formed on the inner circumferential surface of the dental implant crown at intervals, and the outer circumferential surface of the upper telescopic abutment is formed with a plurality of outer positioning planes that are matched with the inner positioning planes.

The lower end of the upper telescopic base is in a closed state, and the annular step of the lower telescopic base is stuck at the bend between the lower end and the middle of the upper telescopic base, and the lower and lower parts of the upper telescopic base are telescopic A polygonal buckle is provided at the contact point of the abutment.

The implant denture with a spring damper telescopic abutment provided by the present invention has the following beneficial effects:

The telescopic abutment overcomes the shortcomings of the traditional abutment and cushions the bite force. Clinically, the damping value of the natural teeth and implants in the patient's mouth can be measured, and the appropriate dampers can be selected to simulate the natural teeth to the greatest extent to achieve the best occlusal contact and occlusal force.

Description of the drawings

Figure 1 is a perspective view of the implant denture structure provided by the utility model with a spring damper telescopic abutment.

Fig. 2 is a cross-sectional view of the longitudinal structure of the implant denture with a spring damper telescopic abutment provided by the present invention.

Fig. 3 is a perspective view of the crown structure of the implant denture with a spring-damped telescopic abutment provided by the present invention when viewed from the bottom surface.

Fig. 4 is a perspective view of the crown structure of the implant denture with a spring damper telescopic abutment provided by the present invention.

Fig. 5 is a perspective view of the middle and upper telescopic abutment structure of the implant denture with spring-damped telescopic abutment provided by the present invention.

Fig. 6 is a perspective view of the abutment cover structure of the implant denture with a spring-damped telescopic abutment provided by the present invention.

Fig. 7 is a perspective view of the structure of the damper in the implant denture with a spring-damped telescopic abutment provided by the present invention.

Fig. 8 is a cross-sectional view of the longitudinal structure of the damper in the implant denture with a spring damper telescopic abutment provided by the present invention.

Fig. 9 is a perspective view of the fixing screw structure of the implant denture with a spring damper telescopic abutment provided by the present invention.

Fig. 10 is a perspective view of the implant structure in the implant denture with a spring damper telescopic abutment provided by the present invention.

11 is a cross-sectional view of the longitudinal structure of the implant in the implant denture with a spring damper telescopic abutment provided by the present invention.

Fig. 12 is a perspective view of the middle and lower telescopic abutment structure of an implant denture with a spring damper telescopic abutment provided by the present invention.

Fig. 13 is a cross-sectional view of the longitudinal structure of the middle and lower telescopic abutment of an implant denture with a spring damper telescopic abutment provided by the present invention.

Detailed ways

The following describes in detail the implant denture with a spring damper telescopic abutment provided by the present invention with reference to the drawings and specific embodiments.

As shown in Figures 1 to 13, the implant denture with a spring damper telescopic abutment provided by the present invention includes an implant 1, a lower telescopic abutment 2, an upper telescopic abutment 3, a fixing screw 4, a damper 5, a base The table cover 6 and the dental implant crown 7; wherein, the implant 1 is a cylindrical structure with external threads formed on the outer circumferential surface, which are implanted in the bone tissue of the patient’s oral cavity, and the top surface is centered toward A central hole 1-1 is formed in the lower recess, and a screw hole 1-2 is formed in the middle of the bottom surface of the central hole 1-1. The middle part of the lower telescopic base 2 is formed with an axial through hole 2-1. A ring-shaped step 2-2 is formed on the middle of the face, and the lower part is inserted into the central hole 1-1 on the implant 1. The upper part of the fixing screw 4 is located inside the axial through hole 2-1 of the lower telescopic abutment 2. , The lower part is threaded into the screw hole 1-2 of the implant 1, thereby fixing the lower telescopic abutment 2 on the implant 1; the damper 5 is ring-shaped, and the bottom surface is located outside the central hole 5-1 An annular telescopic base setting groove 5-2 is formed recessed inward, the annular telescopic base setting groove 5-2 is clamped outside the upper end of the lower telescopic base 2, and the lower end of the damper 5 is located in the ring shape of the lower telescopic base 2. On the step 2-2; an axial center hole 3-1 is formed on the upper telescopic base 3, which is sleeved on the outer periphery of the damper 5 and the middle of the lower telescopic base 2 in a manner that can move up and down; abutment cover The edge of 6 is connected to the upper port of the axial center hole 3-1 on the upper telescopic abutment 3, and a through hole 6-1 is formed in the center; the dental implant crown 7 is in the shape of a dome and is fixed on the upper telescopic abutment 3. An axial hole 7-1 is formed in the center of the upper part and the base cover 6, and the axial hole 7-1 is filled with resin.

An external thread is formed on the edge of the abutment cover 6, and the upper port of the axial center hole 3-1 of the upper telescopic abutment 3 is formed with an internal thread that matches the external thread on the abutment cover 6.

A plurality of inner positioning planes 7-2 are formed on the inner circumferential surface of the dental implant crown 7 at intervals, and a plurality of inner positioning planes 7-2 are formed on the outer circumferential surface of the upper telescopic abutment 3. The outer positioning plane 3-2 to prevent relative rotation between the upper telescopic abutment 3 and the implant crown 7.

The lower end of the upper telescopic base 3 is in a closed state, and the annular step 2-2 of the lower telescopic base 2 is stuck at the bend between the lower end and the middle of the upper telescopic base 3 to prevent the upper part The telescopic base 3 falls off from the lower telescopic base 2, and the lower part of the upper telescopic base 3 contacts the lower telescopic base 2 with polygonal buckles to prevent the upper telescopic base 3 from rotating relative to the lower telescopic base 2.

Now the method for installing the implant denture with the spring damper telescopic abutment provided by the present invention is described as follows: First, pass the lower end of the lower telescopic abutment 2 through the axial center hole 3-1 on the upper telescopic abutment 3, and then Insert the lower part of the lower telescopic abutment 2 into the central hole 1-1 on the implant 1 pre-implanted in the bone tissue of the patient’s oral cavity, and then insert the fixing screw 4 through the axial passage on the lower telescopic abutment 2. Hole 2-1 and screw the lower part of the fixing screw 4 into the screw hole 1-2 of the implant 1; clamp the annular telescopic abutment setting groove 5-2 on the damper 5 outside the upper end of the lower telescopic abutment 2. , And make the lower end of the damper 5 located on the annular step 2-2 of the lower telescopic base 2, at this time the damper 5 will be located in the inner cavity of the upper telescopic base 3, and then screw the edge of the base cover 6 At the upper port of the axial center hole 3-1 on the upper telescopic abutment 3, fix the dental implant crown 7 on the upper part of the upper telescopic abutment 3 and the outside of the abutment cover 6, at this time the inner circumferential surface of the dental implant crown 7 The multiple inner positioning planes 7-2 on the upper telescopic base 3 will be attached to the multiple outer positioning planes 3-2 on the outer circumferential surface of the upper telescopic base 3; The upper part of the axial through hole 2-1 until it reaches the abutment cover 6 and is compacted, and finally the light-curing resin is filled in the axial hole 7-1 of the dental implant crown 7 and polished to complete the entire installation process. At this time, the implant denture with the spring damper telescopic abutment can have the same height as the surrounding normal natural teeth.

The working principle of the dental implant with a spring damper telescopic abutment provided by the present invention is now explained as follows:

When the patient chews food, once the implant denture with spring damper telescopic abutment provided by the present invention encounters harder or larger pieces of food, the bite force generated by the food on the implant denture will squeeze the implant crown downward 7. At this time, the dental implant crown 7, the upper telescopic abutment 3 and the abutment cover 6 will move together in the direction of the implant 1 under the opposite force of the damper 5, so that the damper 5 can be used for the implant crown 7, The movement of the upper telescopic abutment 3 and the abutment cover 6 is damped to prevent excessive stress concentration.

Claims

An implant denture with a spring damper telescopic abutment, characterized in that: the implant denture with a spring damper telescopic abutment comprises an implant (1), a lower telescopic abutment (2), and an upper telescopic base Table (3), fixing screws (4), damper (5), abutment cover (6) and dental implant crown (7); wherein, the implant (1) is a cylindrical structure with an outer circumferential surface Formed with an external thread, which is implanted in the bone tissue in the patient’s oral cavity by using the external thread, and a central hole (1-1) is formed with the middle of the top surface recessed downward, and the middle of the bottom surface of the central hole (1-1) is recessed downward A screw hole (1-2) is formed; an axial through hole (2-1) is formed in the middle of the lower telescopic abutment (2), and an annular step (2-2) is formed protruding outward in the middle of the outer peripheral surface , The lower part is inserted into the central hole (1-1) on the implant (1); the upper part of the fixing screw (4) is located inside the axial through hole (2-1) of the lower telescopic abutment (2), and the lower part is threaded In the screw hole (1-2) of the implant (1), the lower telescopic abutment (2) is fixed on the implant (1); the damper (5) is annular, and the bottom surface is located in the center hole (5-1) The outer part is recessed inward to form an annular telescopic base setting groove (5-2), the annular telescopic base setting groove (5-2) is clamped outside the upper end of the lower telescopic base (2), And the lower end of the damper (5) is located on the annular step (2-2) of the lower telescopic base (2); an axial center hole (3-1) is formed on the upper telescopic base (3) to enable The way of moving up and down is sleeved on the outer peripheral surface of the outer part of the damper (5) and the middle part of the lower telescopic abutment (2); the edge of the abutment cover (6) is connected to the axial center hole (3- 1) At the upper port, a through hole (6-1) is formed in the center; the dental implant crown (7) is in the shape of a dome and is fixed on the upper part of the upper telescopic abutment (3) and the outside of the abutment cover (6) And an axial hole (7-1) is formed in the center of the top surface, and the axial hole (7-1) is filled with resin.
The implant denture with a spring damper telescopic abutment according to claim 1, characterized in that: external threads are formed on the edge of the abutment cover (6), and the axial direction of the upper telescopic abutment (3) is The upper port of the center hole (3-1) is formed with an internal thread that is matched with the external thread on the abutment cover (6).
The implant denture with a spring damper telescopic abutment according to claim 1, characterized in that: the inner circumferential surface of the implant crown (7) is formed with a plurality of inner positioning planes (7-2) at intervals. ), while the outer circumferential surface of the upper telescopic base (3) is formed with a plurality of outer positioning planes (3-2) that are matched with the above-mentioned inner positioning planes (7-2).
The implant denture with a spring damper telescopic abutment according to claim 1, characterized in that: the lower end of the upper telescopic abutment (3) is in a closed state, and the lower telescopic abutment (2) has an annular shape. The step platform (2-2) is clamped at the bend between the lower end and the middle part of the upper telescopic abutment (3), and the contact between the lower part of the upper telescopic abutment (3) and the lower telescopic abutment (2) is provided with a polygon Buckle.