KR101740181B1 - Implant unit - Google Patents

Implant unit Download PDF

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Publication number
KR101740181B1
KR101740181B1 KR1020160026618A KR20160026618A KR101740181B1 KR 101740181 B1 KR101740181 B1 KR 101740181B1 KR 1020160026618 A KR1020160026618 A KR 1020160026618A KR 20160026618 A KR20160026618 A KR 20160026618A KR 101740181 B1 KR101740181 B1 KR 101740181B1
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KR
South Korea
Prior art keywords
artificial
root
insertion member
artificial tooth
artificial root
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Application number
KR1020160026618A
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Korean (ko)
Inventor
김광섭
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김광섭
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Priority to KR1020160026618A priority Critical patent/KR101740181B1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/28—Fastening by spring action between upper and lower denture
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Prosthetics (AREA)

Abstract

The present invention relates to an implant unit, and more particularly, to a dental implant unit. An implant unit according to an embodiment of the present invention includes an artificial root coupled to an alveolar bone and including a groove-shaped space formed in a longitudinal direction from a lower end toward an upper end; And an insertion member inserted into the space portion and for expanding the side of the artificial tooth root.

Description

Implant unit < RTI ID = 0.0 >

The present invention relates to an implant unit, and more particularly, to a dental implant unit.

Artificial teeth are artificially created teeth that are almost identical to human natural teeth in appearance and function. The artificial tooth is used as a substitute for a natural tooth when natural teeth are missing due to various factors such as tooth decay.

There are generally three approaches to replacing natural teeth as artificial teeth according to the symptoms and prognosis of a dental disease, in general, implantation in bridges, dentures or alveolar bone. In the case of the bridge, since healthy adjacent teeth must be shaved, natural teeth are damaged, and there is a problem that the masticatory force is weakened because there is no tooth root, and the life span is not as long as ten years. In the case of the dentures, there is a problem that natural teeth are damaged and the alveolar bone is gradually absorbed in the use process, and is separated from the oral cavity in use or inconvenient because the user gives a foreign body feeling to the oral cavity. Therefore, the bridge and the denture are being applied more and more as long as the alveolar bone is strong.

On the other hand, the implant method of implanting an artificial tooth into an alveolar bone allows an independent operation without damaging the adjacent natural tooth as long as the alveolar bone is maintained in a state suitable for treatment, and it is difficult to distinguish it from the natural tooth after the implantation is completed Its appearance and function are excellent and its application is expanding. In addition, the implant unit to which the implant unit is applied is preferable because the service life is semi-permanent depending on the management state.

A conventional implant unit for implanting an artificial tooth into an alveolar bone generally comprises a crown serving as a tooth, an artificial root serving as a root of the tooth, an abutment connecting the prosthesis and the artificial root, . In the case of the implant unit, when the user repeatedly loads the oral cavity through chewing and ingesting food, the alveolar bone may be destroyed or the alveolar bone may be absorbed by the continuous stress concentration, resulting in additional disease Or may be a factor in reducing the life span. In addition, when the alveolar bone has already absorbed much, the conventional implant unit has a problem that it is difficult or impossible to perform the procedure without additional bone grafting. For example, the maxillary posterior region is close to the sinus (maxillary sinus), and the mandibular posterior region is short in distance to the nerve, requiring additional bone grafting.
[Prior Art Literature]
[Patent Literature]
(Patent Document 0001) Korean Patent Registration No. 10-1327655 entitled "Stress Dispersed Implant Fixture" (Registered on Nov. 31, 2013)
(Patent Document 0002) Korean Patent Registration No. 10-1307411 "Dental Implant" (Registered on May 31, 2013)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an implant unit in which a lower portion of an artificial root is laterally expanded in implanting an implant unit into an alveolar bone.

According to an aspect of the present invention, there is provided a dental implant unit comprising: an artificial root coupled to an alveolar bone and including a groove-shaped space formed in a longitudinal direction from a lower end toward an upper end; And an insertion member inserted into the space portion and for expanding the side of the artificial tooth root.

In the vertical cross section of the artificial tooth root, the groove shape of the space portion may include at least one of a taper type and a pillar type.

A lower inner side surface forming the space portion of the artificial tooth root includes an inner side thread guiding the insertion member to relatively rotate and rise in a direction opposite to the rotation direction of the artificial tooth root when the artificial root is inserted into the alveolar bone .

And at least one first fixing structure formed for provisional fixing of the insertion member to a lower inner side surface of the artificial root forming the space portion. The first fixing structure may include a fixing groove for temporarily fixing the insertion member.

The insertion member may include a spring member of an elastic material. The spring member may have an expanding force to laterally expand the lower portion of the artificial tooth root.

Wherein the insertion member includes: a base portion having a lower end portion in contact with the alveolar bone at a time of implantation into the alveolar bone of the artificial root; And extending portions extending upward from both ends of the base portion. The insertion member may include at least one second fixing structure for temporarily fixing the insertion member to the lower inner surface of the artificial tooth root at one side of the extending portion. The second fixing structure may include a fixing protrusion for temporarily fixing the insertion member to the lower inner surface. The fixation protrusion may have an internal thread or a first fixation structure formed on a lower inner surface of the artificial tooth root and a male-female correspondence structure. When the insertion member is inserted into the space, the lower end of the insertion member may have a surface protruding from the lower end of the artificial root.

At least one slit for laterally opening the space portion may be formed along an outer peripheral surface of a lower portion of the artificial tooth root. The plurality of slits may have a symmetrical structure.

The upper portion of the artificial tooth root may include an abutment groove to be engaged with the artificial tooth root and a coupling groove for engagement. The coupling grooves may include threads for threaded engagement.

The artificial root may include a trench for dividing an upper end of the artificial root into an outer body and an inner body. The inner body may include at least one of a polygonal cross-section, an elliptic cross-section, and slip-preventing irregularities for rotation and slip prevention of a peripheral portion coupled to an upper end portion of the artificial tooth root.

The present invention includes an insertion member for expanding a side portion of an artificial root in a lower portion of an artificial root so that the lower portion of the artificial root is laterally extended at the time of implanting the implant unit into the alveolar bone so that the artificial root can be stably inserted into the alveolar bone do.

Further, by forming the slit in the lower part of the artificial root, additional nutrition can be smoothly supplied to the alveolar bone in the space, so that the alveolar bone can be stabilized. In addition, when the alveolar bone is thin and inevitably the bone is implanted, it can provide a space where the bone cells can directly come out, thereby contributing to increase the success rate of the bone implant.

In addition, by forming a structure capable of stress dispersion between the artificial root and the abutment on the upper end of the artificial root, the stress transmitted from the abutment is dispersed, thereby prolonging the life of the implant unit.

1 is a cross-sectional view illustrating an implant unit according to an embodiment of the present invention.
2A is a cross-sectional view of an artificial root according to an embodiment of the present invention.
2B is a cross-sectional view of an artificial root of another embodiment of the present invention.
FIG. 2C is a cross-sectional view of an artificial root according to another embodiment of the present invention, and FIG. 2D is a plan view as viewed from the lower side of FIG. 2C.
FIG. 2E is a sectional view of artificial root according to another embodiment of the present invention, and FIG. 2F is a plan view of FIG. 2E.
FIG. 2G is a top plan view of the artificial root according to an embodiment of the present invention. FIG.
3A and 3B are a perspective view and a cross-sectional view of an insertion member according to an embodiment of the present invention.
4A to 4D are reference views showing a process of implanting an artificial root including an insertion member according to the present invention into an alveolar bone.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

In the following drawings, thickness and size of each layer are exaggerated for convenience and clarity of description, and the same reference numerals denote the same elements in the drawings. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used in this specification are taken to specify the presence of stated features, steps, numbers, operations, elements, elements and / Steps, numbers, operations, elements, elements, and / or groups.

Further, the term "connection" as used herein means not only that some members are directly connected, but also that other members are interposed between the members to indirectly connect them.

1 is a cross-sectional view illustrating an implant unit 100 according to an embodiment of the present invention. Referring to FIG. 1, an implant unit 100 according to an embodiment of the present invention includes an artificial root 110 coupled to an alveolar bone, and an abutment 120 coupled to an upper end of the artificial root 110. At this time, the abutment 120 can be coupled to the artificial root 110 via the coupling member 130. The prosthesis 140 may be coupled to the abutment 120. The insertion member 150 is inserted into the lower portion of the artificial root 110. Details of the artificial root 110 and the insertion member 150 will be described later.

2A is a cross-sectional view of an artificial tooth root 110A according to an embodiment of the present invention.

Referring to FIG. 2A, the artificial root 110 is directly embedded in the alveolar bone covered with the gums to serve as a pillar. In one embodiment of the present invention, the maximum diameter or width of the artificial root 110 is in the range of 1 mm to 6 mm, preferably in the range of 1 mm to 3 mm. The outer circumferential surface of the artificial root 110 can be inserted into the alveolar bone and fused with the alveolar bone. The outer surface of the artificial root 110 shown in FIG. 2A has a pillar shape having a certain width in the longitudinal direction (reference vertical direction), but the present invention is not limited thereto. For example, it may have a taper shape whose width becomes narrower toward the bottom with respect to the longitudinal direction of the artificial root 110. 2A, a thread, such as a thread 119, may be formed on the outer circumferential surface of the artificial root 110. In this case, the artificial root 110 can be fixed to the alveolar bone by screwing at the time of implantation.

The artificial root 110 may be any one of titanium (Ti), tungsten (W), aluminum (Al), hafnium (Hf), niobium (Nb), tantalum (Ta), zirconium (Zr), platinum One alloy may be included. The metallic materials are illustrative and the present invention is not limited thereto, and other metallic, non-metallic ceramic artificial bone materials or composites thereof having no corrosion and suitable strength and biocompatibility may be applied to the artificial root 110 .

In some embodiments, the artificial root 110 may be coated with phosphate (such as Ca 10 (PO 4 ) 6 (OH) 2 , HA) having superior bioactivity to enhance the binding force on the surface of the artificial root 110, Based ceramic coating layer. In another embodiment, TiO 2 , Ta 2 O 5 , Nb 2 O 5 , ZrO 2 , SiO 2 , RuO 2 , MoO 2 , MoO 3 , VO, VO 2 , V 2 O 3 , V 2 O 5 , CrO 2 , or CrO 3 may be coated. These materials are exemplary, and any material capable of promoting osseointegration as a coating material may be applied. The artificial root 110 may be formed of a material that is easily deformed by an extension force or an external force of the insertion member 150.

The artificial root 110 has a space portion 111. The space portion 111 may be defined by a groove-like structure formed in the longitudinal direction (reference vertical direction) from the lower end portion of the artificial root 110. When the artificial root 110 is implanted in the alveolar bone, the space portion 111 can serve as a nutrient supply channel between the gum and alveolar bone. When the space 111 is formed in the longitudinal direction from the lower end of the artificial root 110, additional nutrition is smoothly supplied to the alveolar bone from the gums to stabilize the alveolar bone, thereby preventing alveolar bone absorption. In addition, if the artificial root 110 has the space portion 111, the alveolar bone is thin and inevitably provides a space where the bone cells can directly come out, thereby contributing to increase the success rate of bone grafting . In addition, when the alveolar bone is melted to form the periodontal ligament through the space 111, it is possible to prevent the periodontal disease from deeply moving into the gum, and the thickness of the alveolar bone to which the implant unit 100 is inserted It is possible to stably implant the implant unit 100 having a large diameter even if it is thin. The depth of the space portion 111 can be formed in a region having a depth ranging from 5% to 80% of the entire length from the lower end portion of the artificial root 110. If the depth is less than 5%, sufficient space can not be secured and the above-mentioned channel can not be provided. If it exceeds 80%, sufficient mechanical support force may not be obtained.

In one embodiment, the vertical cross-sectional shape of the space portion 111 may be a tapered or pillar shape with a large base and a small upper side, as can be seen from the sectional view of the artificial root 110 shown in Fig. 2A. That is, the shape of the space part 111 may be a cylindrical shape having a smaller diameter from the lower part toward the upper part, or a cylindrical shape having the same diameter as the lower part and the upper part. Further, the space portion may be in the form of a cone, or may include an integral space shape into which the insertion member can be inserted.

As shown in FIG. 2A, the lower inner side surface 112 of the artificial root 110 may be flat without irregularities. The artificial root 110 may include a first anchoring structure for temporarily securing the insertion member 150 to the lower inner side surface 112 of the artificial root 110 forming the space portion 111. [ At least one or more of the first fixing structures may be formed. The first fixing structure has a structure in which the insertion member 150 is temporarily fixed to the lower inner side surface 112 of the artificial tooth root. When the artificial tooth root 110 is inserted into the alveolar bone, It can have a structure that can be easily detached from the fixed structure. Such an example of the first fixing structure may include fixing grooves 113A and 113B for temporarily fixing the insertion member. In particular, a plurality of fixing grooves 113A and 113B can be formed at positions where the lower inner side surfaces 112 of the artificial root are opposed to each other.

2B is a sectional view of the artificial tooth root 11B according to another embodiment of the present invention. The above-described disclosure may be consulted, as long as it is not contradicted with respect to the constituent elements having the same reference numerals as the above-described constituent elements.

The lower inner side surface 112 of the artificial root 110 may be a flat surface having no irregularities, but may be a surface having irregularities as shown in FIG. 2B. The unevenness may be an internal thread 113c formed in a direction opposite to the rotation direction of the artificial root 110.

The inner side thread 113c can guide the insertion member 150 to relatively rotate and rise in a direction opposite to the rotation direction of the artificial root 110 when the artificial root 110 is inserted into the alveolar bone. When the artificial root 110 including the insertion member 150 is inserted into the alveolar bone, the bottom surface of the insertion member 150 inserted into the space portion 111 comes into contact with the alveolar bone. The insertion member 150 receives a force in a direction opposite to the rotation direction of the artificial root 110 due to the rotation of the artificial root 110 due to the frictional force caused by the contact with the alveolar bone. Therefore, a threaded structure is required to allow the insertion member 150 to rotate in the upward direction of the space 111. [ That is, the inner side thread 113c formed on the lower inner side surface 112 has a threaded structure for guiding the insertion member 150 to relatively rotate in the direction opposite to the rotation direction of the artificial root 110. In addition, when the artificial root 110 is embedded in the alveolar bone 101, the inner side thread 113c strengthens the coupling force of the artificial root 110 coupled to the alveolar bone 101, and the artificial root 110 ) Can secure structural stability.

On the other hand, although not shown, the above-described fixing grooves 113a and 113b may be formed on one side of the inner side thread 113c. At this time, the fixing grooves 113a and 113b may have a structure in which they are smoothly connected to the inner side thread 113c. That is, when the artificial root 110 is inserted into the alveolar bone, the insertion member 150 inserted into the fixing grooves 113a and 113b easily disengages from the fixing grooves 113a and 113b, The fixing grooves 113a and 113b are connected to one side of the inner side thread 113c with a gentle inclination so as to be able to rotate and rise along the inner side thread 113c

The artificial tooth root 110 may include a slit for opening the space portion 111 in the lateral direction. At least one slit may be formed along the outer circumferential surface of the lower portion of the artificial root 110. The plurality of slits may have a symmetrical structure.

FIG. 2C is a sectional view showing an artificial tooth root 100C according to another embodiment of the present invention, and FIG. 2D is a plan view of FIG. 2C. The above-described disclosure may be consulted, as long as it is not contradicted with respect to the constituent elements having the same reference numerals as the above-described constituent elements.

2C and 2D, the artificial root 110 may include a pair of slits 114 formed symmetrically with respect to one region corresponding to a side portion of the space portion 111. As shown in FIG. The pair of slits 114 may be formed along the outer circumferential surface of the artificial tooth root 110 in the form of opening the space portion 111 in the lateral direction. The slit 114 may have a shape that is incised to a predetermined height from the lower end of the artificial root 110. At this time, the height of the incised slit 114 may be less than or equal to a height at which the first fixing structure formed at the lower inner side surface 112 of the artificial root, that is, the fixing grooves 113a and 113b is located.

The lower portion of the artificial root 110 can be easily extended in the lateral direction by the external force or the stretching force of the insertion member 150 inserted in the space portion 111 due to the formation of the slit 114. [ The alveolar bone portion in contact with the outer circumferential surface of the artificial tooth root 110 and the alveolar bone portion in the space portion 111 are communicated with each other so that nutrient supply is made between the alveolar bone portions via the slit. That is, as in the embodiment of the present invention, when the slit 114 is formed along the outer peripheral surface of the artificial root 110, the nutrient supply channel between the gum and alveolar bone is increased or diversified, The alveolar bone can be more reliably stabilized and the alveolar bone can be prevented from being absorbed. Further, when the slit 114 is formed on the outer circumferential surface of the artificial root 110, when the alveolar bone is thin and bone inevitability is inevitable, it provides more space where the bone cells can directly come out, thereby greatly increasing the success rate of bone grafting . In addition, when the alveolar bone is melted to form the periodontal ligament through the space 111 and the slit 114 during use of the implant unit 100D, it is possible to prevent the periodontal disease from deepening into the gum, It is possible to stably implant the implant unit 100D having a large diameter even if the alveolar bone is thin.

FIG. 2E is a sectional view showing an artificial tooth root 100D according to another embodiment of the present invention, and FIG. 2F is a plan view of FIG. 2E. The above-described disclosure may be consulted, as long as it is not contradicted with respect to the constituent elements having the same reference numerals as the above-described constituent elements.

Referring to FIGS. 2E and 2F, the artificial root 110 may include four slits 114 formed in a symmetrical structure in a region corresponding to a side portion of the space portion 111. FIG. The four slits 114 may be formed along the outer circumferential surface of the artificial tooth root 110 in the form of opening the space portion 111 in the lateral direction. The slit 114 may have a shape that is incised to a predetermined height from the lower end of the artificial root 110. This allows the alveolar bone portion in contact with the outer circumferential surface of the artificial root 110 and the alveolar bone portion in the space portion 111 to communicate with each other through the slit.

One slit 114 may be formed in one area of the artificial tooth root 110 corresponding to the side of the space 111. However, if only one slit 114 is formed, the stress applied to the artificial root 110 may be unbalanced, which may lower the structural stability of the artificial root 110. Therefore, it is preferable that the slits 114 are formed by a plurality of two or more. At this time, if the plurality of slits 114 are formed in an odd number, the plurality of slits may not have a symmetrical structure, and the structural stability of the artificial tooth root 110 may also be lowered. Therefore, it is preferable that the plurality of slits 114 are formed in an even number so as to form a symmetrical structure.

The artificial root includes at least one through hole (not shown) formed in a shape of opening a space portion 111 in a lateral direction in one region of the artificial root 110 corresponding to the space portion 111 can do. The through hole connects the alveolar bone that fills a part of the space 111 with the alveolar bone located on the outer peripheral surface of the artificial root 110 to enhance the stability of the implanted implant unit, And serves as a channel or pathway to facilitate mutual nutrition. In order to supply nutrition smoothly, it is preferable that a plurality of through holes are formed, and a plurality of through holes may be formed closely to form a network structure. At this time, the plurality of through holes may be formed in various shapes and sizes such as circular, elliptical, and angular shapes.

FIG. 2G is a top plan view of the artificial root according to an embodiment of the present invention. FIG.

Referring to FIG. 2G, the artificial root 110 may include a trench 116 that separates the upper end of the artificial root into an outer body 117 and an inner body 118. The trench 116 may be formed in the longitudinal direction (the reference longitudinal direction) from the upper end of the artificial root 110. Accordingly, the trench 116 may be formed in the form of a ring that surrounds the inner body 118 when viewed from above the artificial root 110, as shown in FIG. 2G. This trench 116 provides a seating space for the lower end of the abutment 120. That is, when the abutment 120 is coupled to the artificial root 110, the trench 116 formed at the upper end of the artificial root 110 acts as a groove, and the abutment 120 is formed with a male- do. In one embodiment, the wall surface of the trench 116 may include an inclined surface. Accordingly, the lower end of the abutment 120 may be formed of a corresponding inclined surface. As described above, when the wall surface of the trench 116 is formed of the inclined surface, the contact area with the abutment 120 is increased, and the stress generated at the joint between the abutments 120 is dispersed to reduce the fatigue. In this case, the life of the implant unit 100A is increased, and the wall surface of the trench 116, which is made of the inclined surface, acts as a guide to facilitate the connection between the abutment 120 and the artificial root 110.

The inner body 118 separated or separated from the outer body 117 by the trenches 116 may be a tapered column whose width becomes narrower toward the upper end. In one embodiment, the inner body 118 may have a hexagonal cross section at its upper end to prevent rotation of the abutment 120, as shown in FIG. 2G. However, the structure for preventing rotation is not limited to this, and may have a square, a pentagonal or an elliptical cross section. Also, slip-preventing irregularities may be formed on the upper end of the inner body 118. When the upper end of the artificial root 110 and the lower end of the abutment 120 are engaged with each other, relative rotation and slip of the abutment 120 are prevented by the upper end structure of the inner body 110 as described above.

The upper portion of the artificial root 110 may have an engagement groove 115 aligned with the engagement hole 121 formed in the abutment 120 when the abutment 120 is coupled to the artificial root. The coupling hole 121 and the coupling groove 115 are coupled by the coupling member 130 so that the artificial root 110 and the abutment 120 are rigidly coupled. The coupling member 130 may be a coupling member without a head, or a coupling member with a head.

The abutment 120 coupled to the upper end of the artificial root 110 serves as a support for mounting the artificial teeth or the prosthesis 140. The lower end of the abutment 120 may have a concave and convex structure capable of male and female engagement with the outer body 117 and the inner body 118 separated from each other with the upper end structure of the artificial root 110, have. Particularly, since the wall surface of the trench 116 is formed of an inclined surface, the side wall of the protrusion received in and adhered to the trench 116 of the lower end of the abutment 120 can also be formed as an inclined surface corresponding thereto. In addition, since the inner body 118 of the artificial root is formed in a tapered structure having a hexagonal column whose width becomes narrower toward the upper portion, the side wall of the groove portion, which is in contact with the inner body 118 among the lower end portions of the abutment 120, Structure. As a result, the contact area between the upper end of the artificial root 110 and the lower end of the abutment 120 is increased, the stress generated at the joint is dispersed to reduce the fatigue, and the relative rotation and slip of the abutment 120 So that a stable bonding structure can be achieved.

The upper end of the abutment 120 includes a fastening structure formed to fix the prosthesis 140 to be coupled therewith. The fastening structure may be formed as one or two or more pillars protruding from the upper end of the abutment 120, or a concavo-convex shape such as a hollow cylinder or a cone. Such a fastening structure can increase the contact area with the prosthesis 140 coupled thereto and improve the bonding force.

The abutment 120 includes a coupling hole 121 for connecting the upper end and the lower end of the abutment. The coupling hole 121 is aligned with the coupling groove 115 formed in the artificial root 110 as described above. Referring to FIG. 1, the implant unit 100A of the present invention includes a coupling hole 121 formed in the abutment 120 and an engagement groove 115 formed in the artificial root 110, Lt; / RTI > The coupling member 130 is inserted and fixed in the coupling groove 115 of the artificial root 110 through the coupling hole 121 of the abutment 120 coupled to the upper end of the artificial root 110. Thus, the abutment 120 can be tightly fastened to the artificial root 110. The engaging member 130 allows fine movement of the abutment 120 to disperse the stress transmitted from the abutment 120 to the artificial root 110. For example, in the case of using the coupling member 130 as described above, it is necessary to perform the function immediately after implant implantation. The joining member 130 may be formed of a metal such as titanium (Ti) or medical stainless steel, or an alloy thereof, which can improve the mechanical rigidity of the artificial root 110, which may have a low mechanical rigidity .

Meanwhile, as another embodiment of the present invention, the upper part of the artificial root may have a structure in which the outer body (117 of FIG. 1) shown in FIG. 1 is omitted. In this way, when the outer body is omitted from the artificial root 110, the volume or width of the artificial root 110 is reduced by that much, so that the implant unit having a sufficient supporting force in the alveolar bone 101 having a thin thickness can be implanted without bone grafting Lt; / RTI >

3A and 3B are a perspective view and a cross-sectional view of an insertion member 150 according to an embodiment of the present invention.

3A and 3B, the insertion member 150 has a structure for laterally expanding the lower portion of the artificial root 110, and may be inserted into the space portion 111 of the artificial root 110 . The insertion member 150 may include a spring member of an elastic material. Such a spring member may have an expanding force that laterally extends the lower portion of the artificial root. The spring member may include a line spring, a coil spring, a leaf spring, a release spring, and the like. However, the type of the spring member is not limited to this, and may include an integral spring member for extending the lower portion of the artificial root in the lateral direction.

As shown in FIG. 3B, the insertion member 150 may include a base portion 152 and an extension portion 154.

The base portion 152 constitutes the lower portion of the insertion member 150 and is a portion contacting the alveolar bone in the process of implanting the artificial root 110 including the insertion member 150 into the alveolar bone. The base portion 152 may have a flat bottom surface 152a for contacting the alveolar bone, but may be formed of a gentle curved surface or may have a concavo-convex shape for enhancing the frictional force at a portion in contact with the alveolar bone.

The extension portion 154 may be shaped to extend upwardly from the end of the base portion 152. 3A and 3B, the extension portion 154 is shown as two elongated portions at both ends of the base portion 152, but this is an exemplary structure only one or three or more elongated portions are provided at the base portion 152, respectively. When the insertion member 150 is a spring member made of an elastic material, the extending portion 154 may have a force, that is, a stretching force, to be stretched in the A direction as shown in Fig. 3B.

A second fixing structure for temporarily fixing the insertion member 150 to the lower inner side surface 112 of the artificial root 110 is formed at one side of the extending portion 154. The second fixing structure may include fixing protrusions 156a and 156b. The fixing projections 156a and 156b may have a male-female correspondence structure with the above-described fixing grooves 113a and 113b or the internal thread 113c. The fixing protrusions 156a and 156b are formed on the outer side of the extending portion 154 and may have the same height or different heights. However, the fixing protrusions 156a and 156b are merely examples, and may include an integral shape for fixing the insertion member 150 to the lower inner side surface 112 of the artificial root 110. For example, the second fixing structure may be a fixing groove instead of the fixing protrusions 156a and 156b.

When the insertion member 150 is temporarily fixed to the artificial root 110, the fixing projections 156a and 156b are engaged with the fixing grooves 113a and 113b of the artificial root 110 or one side of the inner thread 113c When the artificial root 110 is inserted into the alveolar bone, the artificial root 110 is separated from one side of the fixing grooves 113a and 113b or the inner side thread 113c and moves toward the upper side of the artificial root 110. If the inner side thread 113c is formed on the lower inner side surface 112 of the artificial root 110, the inner side thread 113c may be formed in a direction opposite to the rotation direction for embedding the artificial root 110, And can move to the upper portion of the artificial root 110 while rotating.

The insertion member 150 has a surface in which the lower end of the insertion member 110 protrudes from the lower end of the artificial root 110 when the insertion member 150 is inserted into the space portion 111. That is, the bottom surface of the base portion 152 constituting the insertion member 150 has a shape lower than the lower end portion of the artificial tooth root. Therefore, when the artificial root 110 including the insertion member 150 is inserted into the alveolar bone, the insertion member 150 is brought into contact with the alveolar bone before the artificial root 110, and the insertion member 150 is in contact with the alveolar bone The relative rotation of the artificial tooth 110 in the direction opposite to the rotation direction of the artificial tooth 110 can be performed. 3A and 3B are merely examples. The insertion member shown in Figs. 3A and 3B is an embodiment, and the insertion member has an integral shape for extending the lower portion of the artificial root 110 in which the space portion 111 is formed, . ≪ / RTI >

FIGS. 4A to 4D are views showing a process of implanting the artificial root 110 including the insertion member 150 according to the present invention into the alveolar bone.

 Referring to FIG. 4A, a space portion 111 for inserting an insertion member 150 is formed in the artificial root 110. FIG. 4B shows a state in which the space 111 of the artificial root 110 shown in FIG. 4A is extended in the lateral direction (direction A in the drawing). The insert member 150 is inserted into the extended space 111 after the lower portion of the artificial root 110 having the space portion 111 is extended in the lateral direction as shown in FIG.

4C shows a state in which the insertion member 150 is inserted into the space portion 111 of the artificial root 110. FIG. 4C, when the insertion member 150 is inserted into the space portion 111 of the artificial root 110, an external force is applied to the outer peripheral surface of the lower portion of the artificial root 110 extending in the lateral direction in FIG. 4B, Restore to original state. That is, an external force is applied in the direction B, and the lower part of the artificial root 110 is pinched. At this time, the fixing protrusions 156a and 156b of the insertion member 150 are engaged with the inner surface threads of the artificial root 110.

4D illustrates a state in which the artificial root 110 including the insertion member 150 is inserted into the alveolar bone 101. As shown in FIG. A space in which the artificial root 110 is to be implanted may be previously provided in the alveolar bone 101 in order to insert the artificial root 110 including the insertion member 150 into the alveolar bone 101. [ When the artificial root 110 including the insertion member 150 rotates and is inserted into the alveolar bone, the lower end of the insertion member 150 existing below the lower end of the artificial root 110, that is, the base portion comes into contact with the alveolar bone . As the base portion of the insertion member 150 contacts the alveolar bone 101, the insertion member 150 receives a force in a direction opposite to the direction in which the artificial root 110 rotates. The insertion member 150, which receives a force in a direction opposite to the rotation direction of the artificial tooth root, moves in a direction opposite to the rotation direction of the artificial tooth root along the inner side thread formed on the lower inner side surface 112 of the artificial root 110 It ascends with relative rotation. The insertion member which has been raised while relatively rotating in the direction opposite to the rotation direction of the artificial tooth root expands the lower portion of the artificial tooth root in the lateral direction, that is, the direction A due to its own stretching force. Accordingly, since the lower portion of the artificial root 110 that is embedded in the alveolar bone 101 is extended, the stress applied to the artificial root 110 can be dispersed to a wide region of the alveolar bone 101, So that it can be stably inserted into the alveolar bone.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various modifications and changes may be made without departing from the scope of the present invention as claimed in the following claims It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (18)

An artificial root coupled to the alveolar bone and including a groove-shaped space formed in the longitudinal direction from the lower end toward the upper end; And
And an insertion member inserted into the space portion and extending for side extension of the artificial tooth root. The method according to claim 1,
Wherein the groove shape of the space portion in the vertical cross section of the artificial tooth root includes at least one of a tapered type and a pillar type. The method according to claim 1,
Wherein the lower inner side surface forming the space portion of the artificial tooth root when the artificial tooth root is inserted into the alveolar bone includes an inner side thread guiding the insertion member to relatively rotate and rise in a direction opposite to the rotating direction of the artificial tooth root Implant unit. The method according to claim 1,
And at least one first fixing structure formed for provisional fixation of the insertion member on a lower inner side surface of the artificial root forming the space portion. 5. The method of claim 4,
Wherein the first fixing structure includes a fixing groove for temporarily fixing the insertion member. The method according to claim 1,
Wherein the insertion member includes a spring member of an elastic material. The method according to claim 6,
Wherein the spring member has an extension force for laterally expanding a lower portion of the artificial tooth root. 2. The apparatus according to claim 1, wherein the insertion member
A base portion at the lower end of which contacts the alveolar bone at the time of implantation into the alveolar bone of the artificial root; And
And an extending portion extending upward from both ends of the base portion. 9. The method of claim 8,
Wherein the insertion member includes at least one second fixing structure for temporarily fixing the insertion member to the lower inner surface of the artificial tooth root at one side of the extending portion. 10. The method of claim 9,
And the second fixing structure includes a fixing protrusion for temporarily fixing the insertion member to the lower inner surface. 11. The method of claim 10,
Wherein the fixing protrusion has an inner thread or a first fixing structure formed on a lower inner surface of the artificial tooth root and a male-female corresponding structure. The method according to claim 1,
And the lower end of the insertion member has a surface protruding from the lower end of the artificial tooth root when the insertion member is inserted into the space. The method according to claim 1,
Wherein at least one slit for laterally opening the space portion is formed along an outer circumferential surface of a lower portion of the artificial tooth root. 14. The method of claim 13,
Wherein the plurality of slits have a symmetrical structure. The method according to claim 1,
And an upper portion of the artificial tooth root includes an abutment groove to be engaged with the artificial tooth root and an engagement groove for engagement. 16. The method of claim 15,
Said coupling groove including threads for threading. The method according to claim 1,
Wherein the artificial root comprises a trench for dividing the upper end of the artificial root into an outer body and an inner body. 18. The method of claim 17,
Wherein the inner body includes at least one of a polygonal cross-section, an elliptic cross-section, and slip-resistant irregularities for rotation and slip prevention of a peripheral portion coupled to an upper end portion of the artificial tooth root.
KR1020160026618A 2016-03-04 2016-03-04 Implant unit KR101740181B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107693141A (en) * 2017-10-20 2018-02-16 广州市健齿生物科技有限公司 It is a kind of to expand fixed combined type planting body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107693141A (en) * 2017-10-20 2018-02-16 广州市健齿生物科技有限公司 It is a kind of to expand fixed combined type planting body
CN107693141B (en) * 2017-10-20 2023-09-19 广东健齿生物科技有限公司 Expansion-fixed combined implant

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