A bolt-body bolt-channel attached denture retention structure

Abstract

The present invention relates to a bolt-body bolt-channel attached denture retention structure, belonging to the technical field of devices or methods for oral or dental hygiene. A bolt-body bolt-channel attached denture retention structure comprises a crown part and a bolt-channel part; wherein the crown part is composed of an artificial crown, a bolt body and a bolt body base plate; the bolt body is located on the side of the artificial crown, and the bolt body base plate is located on the gingival bottom surface of the bolt body and the side of the artificial crown; the bolt body, the artificial crown and the bolt body base plate are integrally formed and connected in pairs; the part of the bolt body base plate beyond the bolt body is used to support the bolt-channel part, the width of the part is 80% to 120% of the width of the bottom surface of the bolt-channel part, and the thickness of the bolt body base plate is 0.5 to 1.5 mm; the bolt-channel part is nested outside the bolt body and is connected and fixed with the bolt body. The advantages of the present invention are: providing a bolt body made of zirconium dioxide that is integrally formed with an artificial crown of abutment, improving the bolt body structure, adding a bolt body base plate design on the gingival bottom surface of the bolt body, strengthening the strength of the bolt body, preventing the bolt channel from sliding down, and effectively blocking the denture from sinking.

Description

Technical Field

[0001] The invention relates to a bolt body bolt channel type attached denture retention structure, belonging to the technical field of devices or methods for oral or dental hygiene. Background Art

[0002] Edentition defect is a common oral disease in clinical practice. The patient's tooth loss causes impaired chewing function, which in turn affects the patient's digestive system and general condition. For the repair of missing teeth, removable partial dentures, implant dentures and other methods are often used in clinical practice. Traditional removable partial denture restorations often have adverse reactions such as tilting, swinging, and mucosal compression. Clasps are required, which affects the appearance. The denture is large in size and poor in comfort. Implant denture restoration is expensive, or the patient's jaw condition is poor and it is impossible to perform implant surgery. The bolt-body bolt-channel precision attachment retention device provides another retention option for the repair of edentulous teeth. Especially for some patients with large-scale jaw defects and edentulous teeth due to tumors or trauma, the remaining abutment teeth are in poor condition, and conventional denture restoration is difficult to retain. In order to solve this kind of problem, we clinically designed a bolt-body retention device with integrated cutting of zirconium dioxide, combined with a bolt channel cut from polymer materials, and the two combined to play a retention role.

[0003] The retention device of precision attachment dentures, the bolt body (male part) and the bolt channel (female part), are interlocking structures. The bolt body is made of metal and connected to the adjacent surface of the metal crown of the abutment tooth; the bolt channel is fixed in the metal bracket or base plate of the removable denture, and plays a role by interlocking the bolt body and bolt channel to provide retention, stability and support for the denture. Compared with traditional clasp dentures, it has the advantages of good retention, stability, good recovery of chewing efficiency, and less foreign body sensation in patients. It is especially suitable for complex dentition defects with a large number of missing teeth and residual roots and crowns.

[0004] The manufacturing steps of the existing bolt body bolt channel retainer are complicated, and the requirements for clinical and technical operations are high, and the bolt body is only made of metal materials. Fig.13A and Fig. 13B It shows that the existing structural design has defects, among which the stress on the neck of the plug body is very concentrated, and the structure of the plug body is relatively weak, so it is easy to break after long-term use; at the same time, after the denture has been worn for a period of time, due to the lack of a blocking structure, the bolt channel often slides down along the longitudinal direction of the plug body, causing the denture to sink and compress the gums, thereby causing adverse reactions such as redness, swelling, ulcers, and pain in the gums. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a bolt-body bolt-channel attached denture retention structure which can prevent the denture from sinking.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions.

[0007] A bolt-body bolt-channel attached denture retention structure comprises a crown component and a bolt-channel component; wherein the crown component is composed of an artificial crown, a bolt body and a bolt-body base plate; the bolt body is located on the side of the artificial crown, and the bolt-body base plate is located on the gingival bottom surface of the bolt body and the side of the artificial crown; the bolt body, the artificial crown and the bolt-body base plate are integrally connected in pairs; the portion of the bolt-body base plate extending beyond the bolt body is used to support the bolt-channel component, the width of the portion is 80% to 120% of the width of the bottom surface of the bolt-channel component, and the thickness of the bolt-body base plate is 0.5 to 1.5 mm; the bolt-channel component is nested outside the bolt body and is connected and fixed with the bolt body.

[0008] The “gingival direction” refers to the direction close to the gums.

[0009] The crown of the present invention realizes the retention and stability of the denture through the mortise and tenon joint connection between the bolt body and the bolt channel piece, which is convenient for patients to take off and wear. The shape and structure of the bolt channel piece match the bolt body, and the connection method between the bolt body and the bolt channel piece is the existing technology.

[0010] The portion of the plug body base plate that extends beyond the plug body is used to support the bolt channel member to prevent it from sinking toward the gums and causing compression on the gums. Therefore, the width of this portion should be such that it can support the bolt channel member.

[0011] Preferably, the width of the portion of the plug body base plate extending beyond the plug body is 95-105% of the width of the bottom surface of the bolt channel member, and the thickness of the plug body base plate is 0.8 mm-1.2 mm.

[0012] Most preferably, the width of the portion of the plug body base plate extending beyond the plug body is 100% of the width of the bottom surface of the bolt channel member, and the thickness of the plug body base plate is 1 mm.

[0013] The plug body is a columnar structure, located on one side of the artificial crown, the cross section of the plug body is approximately T-shaped, and the edge has an arc; the plug body base plate is similar in shape to the bottom surface of the plug body and is larger than the bottom surface of the plug body.

[0014] The structure, shape and angle of the plug body can be individually designed according to the patient's dental condition. The improvement over the prior art is that the plug body is made of zirconium dioxide material and can be designed into various angles, thicknesses and shapes. It is made by cutting or 3D printing technology and is integrally formed with an artificial crown, avoiding the operation of separately making an artificial crown and a metal plug body and then welding the plug body to the artificial crown in the prior art, reducing the difficulty of the preparation process and the steps of the preparation process. In addition, there is no welding point between the integrally formed plug body and the artificial crown, so it is not easy to be damaged and has better strength.

[0015] The dental crown is made of zirconium dioxide material by cutting or 3D printing. The dental crown includes an artificial crown, a plug body and a plug body substrate, which are integrally connected in pairs to form a most solid and stable integrally formed dental crown structure, which can provide better support for the plug body connected to the bolt channel and the denture in which it is located, and prevent the denture from sinking toward the gums.

[0016] The crown is made of zirconium dioxide material by an integrated molding method. Zirconium dioxide material is a common material for making artificial crowns, but in the prior art, the crown material is not used to make the plug body. Therefore, the present invention replaces the metal plug body in the prior art with the crown material zirconium dioxide, which is an innovative choice. Due to the selection of the zirconium dioxide plug body, the plug body part can be designed more delicately and personalized compared to the prior art, such as using a more complex columnar structure and an angle between the artificial crown that is more in line with the specific force requirements. The volume of the plug body can be larger or smaller than the metal plug body in the prior art, so as to better meet the needs of the patient's personalized dental condition, and at the same time, it can form a more matching and fitting combination design with the bolt channel, which is impossible to achieve when the metal plug body is used in the prior art. Zirconium dioxide material is biologically inert and will not cause metal corrosion due to wear and tear, thus extending the life of the denture and avoiding the damage that metal corrosion may cause to the human body. The present invention preferably uses zirconium dioxide cut artificial crowns, plug bodies and plug body substrates, which are conducive to aesthetics due to the absence of metal parts.

[0017] The bolt channel is made by polymer material cutting technology. When designing the bolt channel, the size and position can be adjusted according to the actual situation of the patient to achieve personalized production. The bolt channel is designed by professional dental computer software, and its shape and structure are closely matched with the structure of the bolt body. The manufactured bolt channel will be buried in the denture base. When in use, the denture and the bolt body on the crown are nested and connected through the bolt channel to fix the denture and the artificial crown.

[0018] The polymer material is a polyetheretherketone polymer dental bionic material. The bolt is preferably made of BioHPP polymer dental bionic material produced by Bredent of Germany. Bio HPP is a water-insoluble high-performance polymer that is physiologically inert. This means that it does not tend to interact with other materials and is a powerful biocompatible material with no side effects. The material is a substitute for precious gold and ceramic restorations. The material has no antagonists of wear and tear, protects natural teeth, and the elasticity of the material is closer to human biomechanics than ceramics or dental alloys, making it easy to handle and trim.

[0019] The bolt channel member is fixedly connected in the denture base.

[0020] The dentures mentioned here refer to what is commonly known as "removable partial dentures", which are prostheses that use the remaining natural teeth in the oral cavity and the mucosa and alveolar bones covered by the base as support, and are retained and stabilized by means of retention devices, thereby repairing missing teeth and adjacent soft and hard tissues. Patients can take them off and put them on by themselves. In the present invention, the dentures are connected to the bolt body of the crown part through the bolt channel parts fixedly connected inside them, so as to obtain the retention and stability of the dentures.

[0021] A method for preparing a bolt-body bolt-channel attached denture retention structure comprises the following steps:

[0022] (1) Collecting three-dimensional spatial information of the patient's teeth;

[0023] (2) designing a crown component according to the three-dimensional spatial information collected in step (1), namely, a structure consisting of an artificial crown, a plug body, and a plug body substrate;

[0024] (3) using an integrated molding method to manufacture the crown designed in step (2);

[0025] (4) designing a bolt channel structure that matches the bolt body of step (2);

[0026] (5) manufacturing the bolting member designed in step (4);

[0027] (6) Install the bolt member obtained in step (5) in the base of the denture that needs to be fixed with the bolt body.

[0028] The acquisition method of step (1) is: directly acquiring the three-dimensional spatial data of the teeth by an intraoral scanner; or, clinically acquiring a dental impression of the patient, making a plaster model, and then acquiring the three-dimensional spatial data of the teeth by scanning the model;

[0029] The design method of step (2) is: using professional dental design software for personalized design, adjusting the size and position of the artificial crown, the plug body, and the plug body substrate according to the width and height of the tooth body. The design method is roughly the same as the design method in the prior art, but when designing the artificial crown, the design of the plug body and the plug body substrate structure is added.

[0030] The one-piece forming method of step (3) is: one-piece cutting or 3D printing using zirconium dioxide material; that is, the plug body, the plug body substrate and the artificial crown are all made of zirconium dioxide material and are one-piece formed.

[0031] The design method of step (4) is: using professional dental design software for design;

[0032] The manufacturing method of step (5) is: using a polyetheretherketone polymer dental bionic material cutting process or 3D printing.

[0033] The advantages of the present invention are as follows: the present invention provides a plug body made of zirconium dioxide and integrally formed with an artificial crown of an abutment tooth, and improves the structure of the plug body. The design of a plug body base plate is added to the gingival bottom surface of the plug body, which not only strengthens the strength of the plug body itself, but also prevents the bolt channel from sliding down, effectively blocking the denture from sinking. The plug body is made of dental zirconium dioxide material and is integrally cut and formed with the artificial crown of the adjacent abutment tooth, which improves the accuracy of the plug body structure, simplifies the overall processing technology of the crown part, and the obtained crown part has high strength; the structure of the present invention can adjust the size and position of the components according to the width and height of the tooth body, etc., to achieve personalized production. It is convenient for patients to take off and put on the denture, and improves the effect and comfort of wearing the denture. The present invention can be used in crown and bridge restoration retention, multiple tooth loss restoration, and prosthetic restoration of jaw defects, and has a wide range of clinical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0035] Figure 1 A schematic diagram of the top view of the structure of the dental crown of the present invention is shown.

[0036] Figure 2 A schematic side view of the structure of the dental crown of the present invention is shown.

[0037] Figure 3 A schematic diagram of the three-dimensional structure of the dental crown of the present invention is shown.

[0038] Figure 4 A schematic diagram showing the structure of the bolt channel member and the denture of the present invention in an unassembled state from the gingival side view

[0039] Figure 5 A schematic diagram showing the structure of the bolt channel member of the present invention and the denture in the assembled state from the gingival side view

[0040] Figure 6 A schematic diagram showing the three-dimensional structure of a denture in which the bolt channel member of the present invention is embedded

[0041] Figure 7 Schematic diagram showing the side structure of the denture with the bolt channel member of the present invention embedded

[0042] Figure 8 The diagram shows a three-dimensional structural diagram of the positional relationship and the combined state of the crown component and the bolt channel component of the present invention when the crown component of the present invention and the denture equipped with the bolt channel component of the present invention are in a mating connection state.

[0043] Fig. 9 A schematic diagram showing the operating steps of "fixing a dental crown" according to the present invention.

[0044] Fig.10 A schematic diagram showing the operation steps of "firmly bonding the crown component to the patient's abutment tooth as one" of the present invention.

[0045] Fig.11 A schematic diagram showing the operating steps of "installing dentures" according to the present invention.

[0046] Fig.12 A schematic diagram showing the operation steps of "completing installation" of the present invention.

[0047] Fig.13A and Fig. 13B It is shown that the conventional bolt body bolt channel retention devices in the prior art are all metal castings, which are laser welded to the metal bottom crown of the retention abutment tooth, and the manufacturing process is complicated; they may rust and fall off in the oral saliva environment; and the metal is exposed, which is not aesthetically pleasing.

[0048] The marks in the figure are as follows: 1-bolt body, 2-bolt channel member, 3-artificial crown, 31-inner wall of artificial crown, 4-bolt body base plate, 5-denture, 51-denture artificial tooth, 52-denture base, 53-bolt channel receiving groove, 6-base tooth, 7-patient's gum, 8-adhesive DETAILED DESCRIPTION

[0049] See also Figures 1 to 8 As shown,

[0050] A bolt-body bolt-channel attached denture retention structure, comprising a crown component and a bolt-channel component 2; wherein the crown component is composed of an artificial crown 3, a bolt body 1 and a bolt body base plate 4; the bolt body 1 is located on the side of the artificial crown 3, and the bolt body base plate 4 is located on the gingival bottom surface of the bolt body 2 and on the side of the artificial crown 3; the bolt body 1, the artificial crown 3, and the bolt body base plate 4 are integrally connected in pairs; the portion of the bolt body base plate 4 that exceeds the bolt body 1 is used to support the bolt-channel component 2, and the width of the portion is 100% of the width of the bottom surface of the bolt-channel component, and the thickness of the bolt body base plate 4 is 1 mm; the bolt-channel component 2 is nested outside the bolt body 1 and is connected and fixed with the bolt body 1.

[0051] The artificial crown 3 also has an inner wall 31, the shape of which matches the crown portion of the patient's abutment tooth, and is used to bond and fix the artificial crown 3 to the patient's abutment tooth.

[0052] The plug body 1 is a columnar structure with an approximately T-shaped cross section, with an arc edge, and is located on one side of the artificial crown 3.

[0053] The plug body base plate 4 is similar in shape to the bottom surface of the plug body and is larger than the bottom surface of the plug body 1. The portion of the plug body base plate 4 that exceeds the plug body 1 is used to support the bolt channel member 2. The width of this portion is 100% of the bottom width of the bolt channel member and the thickness is 1 mm.

[0054] The dental crown component includes a plug body 1, a plug body substrate 4 and an artificial dental crown 3, all of which are made of zirconium dioxide material by a cutting process and an integrated molding method.

[0055] The bolt member 2 is fixedly connected (buried and installed) in the base 52 of the denture 5, and its specific installation position is the bolt channel receiving groove 53. The fixing method of the bolt member 2 is the same as that of the prior art. The denture 5 includes a denture artificial tooth 51, a denture base 52 and a bolt channel receiving groove 53. The denture 5 is not the innovation of the present invention. Its structure and material are all prior art. The characteristic is that it adopts the bolt member 2 of the present invention. The bolt member 2 is made by cutting technology of polyetheretherketone polymer dental bionic material, and its shape matches the shape of the bolt body 1. Due to the materials and processes used, it is possible to achieve a matching effect that is better than the prior art, and to perform more precise fixing and connection.

[0056] The preparation method of the present invention:

[0057] (1) Collecting the three-dimensional spatial information of the patient's teeth: In clinical practice, the patient's dental impression is collected, a plaster model is made, and then the plaster model is scanned to collect the three-dimensional spatial data of the teeth. The three-dimensional spatial data of the teeth is collected using the German Sirona scanner inEos X5 and the scanning software Sirona inLab SW16.

[0058] (2) Designing the crown according to the three-dimensional spatial information collected in step (1), using professional dental design software for personalized design, and adjusting the size and position of the artificial crown, the plug body, and the plug body substrate according to the width and height of the tooth. The design method is roughly the same as the design method in the prior art, but when designing the artificial crown, the design of the plug body and the plug body substrate structure is added; the design software is from exocad GmbH of Germany. dental2.2 Valletta dental design software.

[0059] (3) The crown designed in step (2) is manufactured by one-piece cutting and molding of zirconium dioxide material; and is processed by a German Sirona inLab MC X5 cutting machine.

[0060] (4) Using professional dental design software to design the structure of the bolt channel component that matches the bolt body of step (2); using the German exocad GmbH company's Designed using dental2.2 Valletta dental professional design software.

[0061] (5) The bolt channel component designed in step (4) is manufactured using a cutting process of a polyetheretherketone-based polymer dental bionic material; the bolt channel material is BioHPP polymer dental bionic material produced by Bredent, a German company.

[0062] (6) The bolt member obtained in step (5) is installed and fixed in the base of the denture that needs to be fixed with the bolt body.

[0063] The method of using the present invention is shown in Figures 9 to 12 As shown:

[0064] 1. Fixed crown: The artificial crown 3 has an inner wall 31 that matches the surface shape of the patient's abutment 6 (the patient's remaining tooth tissue, which is clinically prepared to form the prepared body shape of the abutment), and an adhesive 8 is applied to the surface of the abutment 6 and / or the inner wall 31 of the artificial crown. The plug body 1 is oriented toward the direction of the denture 5 to be installed, and the plug body base plate is located in the direction toward the patient's gums 7, and the crown is bonded and fixed to the patient's abutment 6;

[0065] 2. Wait for a while, or perform accelerated fixation treatment, so that the crown and the patient's abutment 6 are firmly bonded together;

[0066] 3. Install the denture: pre-install the bolt channel member 2 in the bolt channel receiving groove 53 of the denture base 52, place the denture 5, and connect and fix the bolt channel member 2 with the bolt body 1 of the crown member. The bolt body 1 and the bolt channel member 2 are engaged with each other to play the role of retaining and stabilizing the denture;

[0067] 4. Complete the installation: the crown is connected to the denture 5 as a whole, the denture base 52 covers the surface of the patient's gums 7, and the bolt body base plate 4 supports the bolt channel component 2 to prevent the bolt channel component 2 from sinking toward the patient's gums 7 and causing compression of the patient's gums.

[0068] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Those skilled in the art can design many other modifications and implementation methods, which will fall within the scope and spirit of the principles disclosed in this application. More specifically, within the scope of the disclosure, drawings and claims of this application, various modifications and improvements can be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be obvious to those skilled in the art.

Claims

1. A bolt-type attached denture retention structure, characterized in that: It comprises a crown piece and a bolt channel piece; wherein the crown piece is composed of an artificial crown, a bolt body and a bolt body base plate; the bolt body is located on the side of the artificial crown, and the bolt body base plate is located on the gingival bottom surface of the bolt body and the side of the artificial crown; the bolt body, the artificial crown and the bolt body base plate are integrally connected in pairs; the part of the bolt body base plate extending beyond the bolt body is used to support the bolt channel piece, the width of the part is 80% to 120% of the bottom width of the bolt channel piece, and the thickness of the bolt body base plate is 0.5 to 1.5 mm; when in use, the bolt channel piece is fixedly connected in the denture base, and the denture base covers the surface of the patient's gums; the bolt channel piece is nested outside the bolt body, connected and fixed with the bolt body, the bolt body base plate is located between the bolt channel piece and the patient's gums, and the bolt body base plate supports the bolt channel piece to prevent the bolt channel piece from sinking toward the patient's gums; The crown is made of zirconium dioxide material by cutting technology or 3D printing integrated molding method; The bolt channel piece is made by a high polymer material cutting process, and its shape matches the shape of the bolt body.

2. A bolt-type attached denture retention structure according to claim 1, characterized in that: The width of the portion of the bolt body base plate extending beyond the bolt body is 100% of the width of the bottom surface of the bolt channel member, and the thickness of the bolt body base plate is 1 mm.

3. A bolt-type attached denture retention structure according to claim 1 or 2, characterized in that: The plug body is a columnar structure, located on one side of the artificial crown, the cross section of the plug body is approximately T-shaped, and the edge has an arc; the plug body base plate is similar in shape to the bottom surface of the plug body and is larger than the bottom surface of the plug body.

4. The bolt-type attached denture retention structure according to claim 1, characterized in that: The polymer material is a polyetheretherketone polymer dental bionic material.

5. The bolt-type attached denture retention structure according to claim 1, characterized in that: The width of the portion of the plug body base plate extending beyond the plug body is 95-105% of the width of the bottom surface of the bolt channel member, and the thickness of the plug body base plate is 0.8 mm-1.2 mm.

6. A method for preparing a bolt-body bolt-channel attached denture retention structure according to any one of claims 1 to 5, characterized in that: The steps include: (1) Collect the three-dimensional spatial information of the patient's teeth; (2) designing a crown component according to the three-dimensional spatial information collected in step (1), namely, a structure consisting of an artificial crown, a plug body and a plug body substrate; (3) using an integrated molding method to manufacture the crown designed in step (2); (4) Designing a bolt channel structure that matches the bolt body of step (2); (5) Produce the bolting parts designed in step (4); (6) Install the bolt member obtained in step (5) in the base of the denture that needs to be fixed with the bolt body.

7. The method for preparing a bolt-body bolt-channel attached denture retention structure according to claim 6, characterized in that: The acquisition method of step (1) is: directly acquiring the three-dimensional spatial data of the teeth by an intraoral scanner; or, clinically acquiring a dental impression of the patient, making a plaster model, and then acquiring the three-dimensional spatial data of the teeth by scanning the model; The design method of step (2) is: using professional dental design software to perform personalized design, and adjusting the size and position of the artificial crown, the plug body, and the plug body base plate according to the width and height of the tooth body; The one-piece forming method of step (3) is: one-piece cutting or 3D printing of zirconium dioxide material; The design method of step (4) is: using professional dental design software for design; The manufacturing method of step (5) is: using a polyetheretherketone polymer dental bionic material cutting process or 3D printing.

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