KR101603474B1 - Bioglass fiber dental implant - Google Patents

Abstract

The present invention relates to a bioactive glass fiber implant having a fiber material and a fiber structure. The bioactive glass fiber implant includes: a fixation member installed to be attached to a lower jaw bone or a skull; and a lateral portion attachment member which is joined to the fixation member and is installed to join a tooth pillar for supporting a dental prosthesis. The fixation member and the lateral portion attachment member are made of a reinforcement-type fiber resin. Fiber in the reinforcement-type fiber resin forms fiber knitted structures and includes a center fiber axis, which straightly penetrates the fiber knitted structures, and a plurality of braided-type fiber axes which alternately cover the center fiber axis. Each fiber in the reinforcement-type fiber resin has a single layer or a multilayered structure. The present invention is to provide a strong structure for the bioactive glass fiber implant.

Description

Biologically active glass fiber implants {BIOGLASS FIBER DENTAL IMPLANT}

The present invention relates to an implant, and more particularly to a bioactive glass fiber dental implant.

An implant (also referred to as a bone graft or fixture) is a surgical assembly that is joined to the mandible or skull to support a dental prosthesis, such as a crown, bridge, denture, facet prosthesis, or a fixator for orthodontics (e.g., References: TWM477874, TW201422211, CN203354671U, US3905109A, US20120251977A1, etc.). Conventional tooth implantation is based on a biological process called osseointegration, the material of which is, for example, titanium and is tightly bonded to the bone. The implant fixture may be initially seated to allow for osseointegration, followed by a dental prosthesis. Before the dental prosthesis (teeth, bridges, dentures) touch the implants, or before placement of the dental pillars supporting the dental prosthesis, an unequal healing time is required.

Implants are primarily intended to support dental prostheses. Conventional implants utilize biological processes that utilize osseointegration and tightly fix and fuse to specific materials such as, for example, titanium or ceramics. Fusion of implants and bones can support physical loads during 10 years to avoid damage.

In some tooth replacement, first, a tooth column for implantation is fixed to the implant using a bolt for a tooth column. Then, the crown (dental prosthesis) is connected to the dental column using a dental adhesive or a screw, or is melt-bonded to the dental column when the dental crown is manufactured. Similarly, the implant may also be used to hold a plurality of dental prostheses in a manner that fixes the bridge or movable denture.

In part, the long-term success of an implant is determined by its supportable force. If there is no periodontal ligament in the implant, there will be no pressure sensation at the time of chewing, so the force generated will be large. In order to offset this force, the position of the implant must ensure that forces are distributed averaged over the prosthesis supported thereby. Stress concentration can result in rupture of the denture frame and implant components, or loss of bone adjacent to the implant. The fundamental location of implants is based on biological factors (bone type, life structure, health) and mechanical factors.

Therefore, the design of implants must provide the resilience of the tooth substance, which is similar to the tensile strength and the natural teeth, so as to cope with the use of human oral hygiene in real life. Titanium or zirconium oxide (ceramics) is widely used as an implant due to its high tensile strength. Titanium or zirconium oxide (ceramic) material, however, breaks the elasticity of hemorrhoids and breaks easily when shocked.

Therefore, a new design for the implant is needed to provide life-cycle retention that is used in real life.

According to an embodiment of the present invention, a bioactive glass fiber implant having a fiber material and a structure is provided to solve the above-mentioned problems.

The content of the present invention is to provide a strong structure for bioactive glass fiber implants. The present invention develops fiber dynamics and provides a structure as described above using a fiber knitting method. The proposed fibers may be reinforced with tension and have one or more layers. The structure provided using this method can improve the osseointegration process.

According to a first aspect of the present invention, an exemplary bioactive glass fiber implant having a fiber material and a structure is disclosed. The bioactive glass fiber implant includes a fixing member and a peripheral bonding member. The fixation member is installed to advance the mandibular or skull and osseointegration. The peripheral bonding member is connected to the fixing member and is provided for connecting the tooth column supporting the dental prosthesis. The fixing member and the peripheral joint member are made of reinforcing fiber resin. The fibers with the continuous fiber length form a fiber knitted structure so that the bioactive glass fiber implant has high tensile strength and elasticity of the tooth. In other words, for stresses concentrated in the implant, the fiber knitting structure is better than the conventional single sheet structure, and the fiber knitting structure can be used to prevent rupture.

In a preferred embodiment, the fiber knit structure comprises a central fiber axis and a plurality of braided fiber axes. The center fiber axis passes straight through the fiber knitting structure and the castable fiber axis alternately surrounds the center fiber axis. The central fiber shaft provides a separate clamping force to the castable fiber shaft as a support component. Therefore, the center fiber axis has higher tensile strength in the direction than the conventional cross-type knitting mechanism through the center reinforcement mechanism. Except for the circular fibers, each of the fibers may be formed in a hexagonal shape to provide a higher tensile strength. In certain embodiments, each fiber is a single layer and may be formed of bioactive fibers, such as bioactive glass fibers, collagen proteins, hydroxyapatite, or calcium phosphate. Alternatively, the fibers may be made of X-ray-impermeable bio-inert glass fibers or bio-inert materials. When a bioactive glass fiber implant is implanted, the osseointegration process may begin between the bioactive glass fiber implant and the bone. In other words, the osseointegration process can be initiated between the fibers and bones of bioactive glass fiber implants. Since the fibers of the bioactive glass fiber implant include a bioactive material, the osseointegration can be made more tight by the fiber knitting method than the conventional coating method.

In a preferred embodiment, the fibers of the continuous reinforcing fiber count may be multi-layered fibers, and the coefficient of thermal expansion of each layer of the multi-layered fibers gradually decreases from the inner layer to the outer layer. For example, each fiber includes a core layer and a housing layer. The housing layer surrounds the peripheral surface of the core layer and has a thermal expansion coefficient lower than that of the core layer. Due to the mechanical nature of the fiber, the fiber shaft can withstand a high tensile force, providing an advantage of being able to provide bioactive glass fiber implants with high tensile strength. High tensile strength is important for bioactive glass fiber implants. The reason for this is that bioactive glass fiber implants are always used and the direction of the external force applied thereto is not coincident. Each layer of the multi-layered fiber may be formed of a circular filament, a hexagonal filament, or a bar-like filament. In the present embodiment, the core layer is formed of circular long or hexagonal long fibers, and the housing layer is formed of circular long fibers, hexagonal long fibers, or bar-like long fibers to reinforce the strength of the fiber knitted structure. At least one layer of the multi-layer fibers is made of a bio-inert material, and at least one layer of the multi-layer fibers is made of a bioactive material. The housing layer of certain embodiments is made of a bioactive material, such as bioactive glass, collagen protein, hydroxyapatite, or calcium phosphate. When the housing layer is in contact with the bone, the bioactive material may be released from the housing layer and contact osteoblasts in the bone to proceed osseointegration. The core layer of this embodiment can be made of a bio-inert material to maintain the structure of bioactive glass fiber implants.

In a preferred embodiment, each fiber comprises a core layer, an intermediate layer and a housing layer. The intermediate layer surrounds the peripheral surface of the core layer, and the housing layer surrounds the peripheral surface of the intermediate layer. The thermal expansion coefficient of the housing layer is smaller than the thermal expansion coefficient of the intermediate layer, and the thermal expansion coefficient of the intermediate layer is smaller than the thermal expansion coefficient of the core layer. The advantage of such a three-layer structure is that when the housing layer adheres to the bones, the two-layer structure constructed with the remaining core layer and the intermediate layer is still maintained, thus providing greater tensile strength compared to the single layer structure. At least one layer of the multi-layer fibers is made of a bio-inert material, and at least one layer of the multi-layer fibers is made of a bioactive material. For example, in one particular embodiment, the core layer and / or the intermediate layer may be made of an X-ray-impermeable bio-inactive glass fiber or a bio-inactive material, wherein the housing layer comprises a bioactive material, Collagen protein, hydroxyapatite, or calcium phosphate. In one particular embodiment, the core layer and / or the intermediate layer may be made of a bioactive material, such as a bioactive glass, a collagen protein, a hydroxyapatite, or calcium phosphate, and the housing layer may be a xray-impermeable bioactive glass Fiber or bio-inactive material. In one specific embodiment, the core layer and / or the intermediate layer may be formed of a circular filament, or a hexagonal filament, and the housing layer may be formed of a circular filament, a hexagonal filament, or a bar-like filament, Can be reinforced.

1 is a schematic view of a bioactive glass fiber implant according to a general embodiment of the present invention.
Figures 2a and 2b are schematic views of fibers used in bioactive glass fiber implants according to the first and second embodiments of the present invention.
Figures 3a and 3b are schematic views of fibers used in bioactive glass fiber implants according to the third and fourth embodiments of the present invention.
Figures 4a and 4b are schematic views of fibers used in bioactive glass fiber implants according to the fifth and sixth embodiments of the present invention.
Figures 5A and 5B are schematic views of fibers used in bioactive glass fiber implants according to the seventh and eighth embodiments of the present invention.
Figures 6A and 6B are schematic views of fibers used in bioactive glass fiber implants according to the ninth and tenth embodiments of the present invention.
Figures 7A and 7B are schematic views of fibers used in bioactive glass fiber implants according to the eleventh and twelfth embodiments of the present invention.
8 is a schematic view of a fiber used in a bioactive glass fiber implant according to a thirteenth embodiment of the present invention.
9 is a schematic view of a bioactive glass fiber implant according to another general embodiment of the present invention.

Referring to Figure 1, which is a schematic view of a bioactive glass fiber implant 100 according to a general embodiment of the present invention. The bioactive glass fiber implant 100 includes a fixing member 110 and a peripheral bonding member 120. The fixation member 110 is installed to graft the bioactive glass fiber implant 100 with the mandible or skull. The peripheral bonding member 120 is connected to the fixing member 110 and is provided for connecting a tooth column (not shown) supporting a dental prosthesis (not shown, for example a crown). The fixing member 110 and the peripheral bonding member 120 are both made of reinforcing fiber resin, and the reinforcing fiber resin refers to a material provided with fibers in the resin. Referring to sub-drawing A of FIG. 1, this is a top view of a bioactive glass fiber implant 100. In sub-drawing A, it can be seen that the fibers F are fixed to the resin R and provided in the bioactive glass fiber implant 100. Subsequently, referring to the sub-drawing B of FIG. 1, it can be seen that the fibers F are knitted to form a fiber knitting structure. The fiber knit structure is advantageous for the bioactive glass fiber implant 100 to have both high tensile strength and elasticity of the hemorrhoids.

Sub-drawing B shows that the fiber knit structure includes a center fiber axis 10 and a plurality of spoken fiber axes 20. The center fiber shaft 10 passes straight through the fiber knitting structure, and a plurality of spoilable fiber spans 20 alternately surround the center fiber shaft. The figure "*" in subdivision B provides a separate clamping force for the castellary fiber axis 20 and high tensile strength in the vertical direction, thereby providing a stronger structure than the conventional figure "X".

Resin (R) can be made of a biologically inert or biodegradable material to promote the osseointegration process, and is determined according to actual embodiments. The resin (R) may be a thermosetting or thermoplastic material. The fibers (F) may be single-layer fibers or multi-layer fibers, and may be made of a biologically inert or bioactive material. This will be described in more detail below.

2A and 2B, these drawings are schematic views of fibers used in the bioactive glass fiber implant 100 according to the first and second embodiments of the present invention, respectively. As can be seen from Figs. 2A and 2B, the fibers used in the bioactive glass fiber implant 100 are single layer fibers. However, the fibers may be circular or hexagonal. The purpose of forming hexagonal fibers is to provide high tensile strength to the fiber knit structure of the bioactive glass fiber implant 100. In these embodiments, the fibers may be made of a bioactive material, such as bioactive glass fibers, collagen proteins, hydroxyapatite, or calcium phosphate. Thus, once the bioactive glass fiber implant 100 is implanted, the fibers may begin to ossify into the bone. Since the fibers used in this embodiment have bioactivity, the resin should be made of a bio-inactive material to maintain the structure of the bioactive glass fiber implant 100. However, the present invention is not limited to this, and the fiber may be made of a bio-inactive glass fiber or a bio-inactive material which is X-ray-impermeable.

Referring to FIGS. 3A and 3B, these drawings are schematic views of fibers used in the bioactive glass fiber implant 100 according to the third and fourth embodiments of the present invention, respectively. In these embodiments, the fiber of the bioactive fiberglass implant 100 continuous fiber of reinforcing fibers is a multi-layered fiber, and the coefficient of thermal expansion of each layer of the multi-layered fiber gradually decreases from the inner layer to the outer layer. As can be seen from FIGS. 3A and 3B, the fibers used in the bioactive glass fiber implant 100 are two-layer fibers. In these embodiments, the multilayered fiber comprises a core layer 2 and a housing layer 1, the housing layer 1 surrounding the surrounding surface of the core layer 2 and having a coefficient of thermal expansion smaller than that of the core layer 2 I have. The provision of the two-layer fibers can provide a high tensile strength and can provide a high tensile strength to the bioactive glass fiber implant 100. Each layer of the multi-layered fiber is formed of a circular filament, a hexagonal filament, or a bar-like filament. In these embodiments, the core layer 2 is formed of circular filament or hexagonal filament, and the housing layer 1 is formed of circular filament. At least one layer of the multilayer fibers is made of a bio-inert material, and at least one layer of the multilayered fiber is made of a bioactive material. The housing layer 1 of this embodiment is made of a bioactive material, such as bioactive glass, collagen protein, hydroxyapatite, or calcium phosphate. When the housing layer 1 is in contact with the bone, the bioactive material may be released from the housing layer 1 and contact osteoblasts in the bone to proceed osseointegration. The core layer 2 of the present embodiment can be made of a bio-inert material, for example, a biologically inert glass fiber, to hold the structure of the bioactive glass fiber implant 100.

Referring to Figs. 4A and 4B, these drawings are schematic views of fibers used in the bioactive glass fiber implant 100, according to the fifth and sixth embodiments of the present invention, respectively. 4A and 4B, the core layer 2 and the housing layer 1 are installed similarly to the third embodiment and the fourth embodiment. In the fifth embodiment and the sixth embodiment, the housing layer 1 is formed of bar-like long fibers. The function of the bar type installation is to provide more fixing force between the fibers. Referring to Figs. 5A and 5B, these drawings are schematic views of fibers used in the bioactive glass fiber implant 100 according to the seventh and eighth embodiments of the present invention, respectively. 5A and 5B, the core layer 2 and the housing layer 1 are installed similarly to the third and fourth embodiments. In the seventh embodiment and the eighth embodiment, the outer surface of the housing layer 1 has a separate dot-like coating layer 11. The function of the dot-like coating layer 11 is to provide more fixing force between the fibers.

6A and 6B, these drawings are schematic views of fibers used in the bioactive glass fiber implant 100 according to the ninth and tenth embodiments of the present invention, respectively. In these embodiments, the fiber of the bioactive fiberglass implant 100 continuous fiber of reinforcing fibers is a multi-layered fiber, and the coefficient of thermal expansion of each layer of the multi-layered fiber gradually decreases from the inner layer to the outer layer. As can be seen from Figs. 6A and 6B, the fibers used in the bioactive glass fiber implant 100 are three-layer fibers. In these embodiments, the multilayered fibers comprise a core layer 2, an intermediate layer 3 and a housing layer 1, an intermediate layer 3 surrounding the peripheral surface of the core layer 2, And surrounds the peripheral surface of the intermediate layer 3. The thermal expansion coefficient of the housing layer 1 is smaller than the thermal expansion coefficient of the intermediate layer 3 and the thermal expansion coefficient of the intermediate layer 3 is smaller than the thermal expansion coefficient of the core layer 1. [ At least one of the multilayer fibers is made of a bio-inert material, and at least one of the multilayer fibers is made of a bioactive material. In these embodiments, the core layer 2 and / or the intermediate layer 3 are made of a bio-inactive glass fiber or a bio-inactive material that is impermeable to X-rays, and the housing layer 1 is made of a bioactive material, Glass, collagen protein, hydroxyapatite, or calcium phosphate. The purpose of the three-layered structure is to maintain the two-layer structure constructed of the core layer 2 and the intermediate layer 3 when the housing layer 1 and the bone are osseointegrated. In addition, compared to the two-layer installation, the three-layer installation can of course also be able to withstand greater tension. In this embodiment, the core layer 2 may be formed of a circular filament or a hexagonal filament, and the intermediate layer 3 and the housing layer 1 may be formed of circular filament. The core layer 2 and / or the intermediate layer 3 may be made of a bioactive material, for example, a bioactive glass, collagen protein, hydroxyapatite, or calcium phosphate. And the housing layer 1 may be made of an X-ray-impermeable bio-inert glass fiber or a bio-inactive material. Thus, the bioactive material is released from the core layer 2 or the intermediate layer 3 to contact the osteoblasts in the bone, thereby allowing the bone adhesion to proceed.

7A, 7B and 8, these drawings are schematic views of the fibers used in the bioactive glass fiber implant 100 according to the eleventh, twelfth and thirteenth embodiments of the present invention, respectively. to be. 7A and 7B, the core layer 2, the intermediate layer 3 and the housing layer 1 are installed similarly to the ninth embodiment and the tenth embodiment. In the eleventh embodiment and the twelfth embodiment, the housing layer is formed of bar-like long fibers. In Fig. 8, the core layer 2, the intermediate layer 3 and the housing layer 1 are installed similarly to the eleventh and twelfth embodiments. In the thirteenth embodiment, the intermediate layer 3 is formed of hexagonal filament. The provision of the housing layer 1 in a bar shape is to provide more fixing force between the fibers. In this embodiment, the housing layer 1 and the intermediate layer 3 are made of a bio-inactive material, and the core layer 2 is made of bioactive glass, collagen protein, hydroxyapatite, or calcium phosphate.

Referring to FIG. 9, the bioactive glass fiber implant 100 may be fabricated in a double threaded configuration according to actual practice. In sub-drawing C, it can be seen that the fibers F are provided in the bi-active glass fiber implant 100 of the double-threaded structure because they are fixed in the resin R. Subsequently, referring to the subdrawing D of FIG. 9, it can be seen that the fibers F are knitted to form a fiber knitting structure. Sub-drawing E shows a cross-sectional view of a textile knitting structure. Also, at least one of the core layer and the housing layer may be made of an X-ray impermeable material, thereby allowing the bioactive glass fiber implant 100 to appear during X-ray scanning. It should be noted that the above-described embodiments are for illustrative purposes only and are not intended to limit the present invention. In other embodiments, the bioactive glass fiber implant 100 may have a structure of three or more layers, and each layer may be made of various shapes and various materials, one of which is made of a bioactive material, (100) structure. And one of them may be made of a bioactive material to promote osseointegration. For example, the fibers used in the bioactive glass fiber implant 100 may be 10-layer fibers, and each layer may be formed of a circular long fiber, a hexagonal long fiber, or a bar long fiber, May be made of a bioactive material (bioactive glass, collagen protein, hydroxyapatite, calcium phosphate), an X-ray impermeable material, or a bio-inactive material, at least one of which is made of a bio- Layer may be made of a bioactive material.

1 housing layer
11 dot type coating layer
2 core layer
3 middle layer
10 Center fiber axis
20 spatula type fiber shaft
100 bioactive glass fiber implant
110 fixing member
120 peripheral joint member
F fiber
R resin

Claims (14)

In a bioactive glass fiber implant having a fiber material and structure,
A fixation member for performing osseointegration with the mandible or skull; And
And a peripheral joint member connected to the fixation member for connecting a tooth column supporting the dental prosthesis,
Wherein the fixing member and the peripheral bonding member are made of a reinforcing fiber resin, and the fiber having continuous fiber reinforcing fibers is formed with a fiber knitting structure. The method according to claim 1,
Wherein the fiber knitting structure comprises:
A center fiber axis passing straight through the fiber knitting structure; And
And a plurality of putative fiber axes alternately surrounding said central fiber axes. The method according to claim 1,
Wherein said reinforcing fiber-continuous fiber is a multilayer fiber. The method of claim 3,
Wherein the multi-layered fiber comprises a core layer and a housing layer, the housing layer surrounding the peripheral surface of the core layer; Wherein the multilayer fiber comprises a core layer, an intermediate layer and a housing layer, wherein the intermediate layer surrounds the peripheral surface of the core layer and the housing layer surrounds the peripheral surface of the intermediate layer. 5. The method of claim 4,
Wherein the outer surface of the housing layer has a dotted coating layer. The method of claim 3,
Wherein at least one of the multilayer fibers is made of a bioactive material and at least one of the multilayer fibers is made of a bioactive material. The method according to claim 6,
Wherein the bio-inactive material is a bio-inert glass fiber. The method according to claim 6,
Wherein said bioactive material is a bioactive glass, collagen protein, hydroxyapatite, or calcium phosphate. The method of claim 3,
Wherein each layer of the multi-layered fiber is formed of a circular filament, a hexagonal filament, or a bar-like filament. The method of claim 3,
Wherein the thermal expansion coefficient of each layer of the multilayer fiber gradually decreases from the inner layer to the outer layer. The method according to claim 1,
Wherein the reinforcing fiber resin is a biologically active glass fiber implant having in vivo inertness. The method according to claim 1,
Wherein the reinforcing fiber resin is a biodegradable bioactive fiberglass implant. The method according to claim 1,
Wherein the reinforcing fiber resin is a thermosetting bioactive glass fiber implant. The method according to claim 1,
Wherein the reinforcing fiber resin is a thermoplastic, bioactive glass fiber implant.

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