WO2014103653A1 - インプラント体、アバットメント体、インプラント、インプラントの製造方法 - Google Patents

インプラント体、アバットメント体、インプラント、インプラントの製造方法 Download PDF

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Publication number
WO2014103653A1
WO2014103653A1 PCT/JP2013/082733 JP2013082733W WO2014103653A1 WO 2014103653 A1 WO2014103653 A1 WO 2014103653A1 JP 2013082733 W JP2013082733 W JP 2013082733W WO 2014103653 A1 WO2014103653 A1 WO 2014103653A1
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WIPO (PCT)
Prior art keywords
implant
implant body
groove
bone
fine groove
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PCT/JP2013/082733
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English (en)
French (fr)
Japanese (ja)
Inventor
暉夫 石渡
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株式会社ナントー精密
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Filing date
Publication date
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Publication of WO2014103653A1 publication Critical patent/WO2014103653A1/ja

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018Means 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
    • A61C8/0037Details of the shape
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018Means 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
    • A61C8/0037Details of the shape
    • A61C2008/0046Textured surface, e.g. roughness, microstructure

Definitions

  • the present invention relates to an implant body, an abutment body, an implant, and an implant manufacturing method.
  • the present invention relates to a dental implant that is embedded in a jaw bone in the case of a root defect of a permanent tooth.
  • a dental implant is one in which an implant body is inserted and fixed in a hole provided in an alveolar bone when the root of a permanent tooth is lost due to decay or damage.
  • the dental implant is composed of an implant body (fixture) fixed to the alveolar bone, and an abutment body that is screwed to the implant body and on which an artificial crown can be attached.
  • the outer surface of the implant body is a surface that directly contacts the bone and is generally formed with a male screw. It has been clarified that there is a difference in the bonding between the implant body and the bone depending on the properties of the outer surface of the implant. It has been reported that an implant body having a roughened outer surface can obtain higher bone bonding (bone adhesion) than an implant body having a smooth outer surface.
  • An object of the present invention is to provide an implant body, an abutment body, an implant, and a method for manufacturing the implant that can provide high bone adhesion.
  • the first embodiment of the implant body of the present invention is an implant body that is embedded in a bone and bone-bonded, and has a groove formed on the outer surface with a width of 1 ⁇ m or more and 1 mm or less.
  • the groove is preferably formed in a region of the outer surface that directly contacts the bone.
  • the width is preferably 5 to 500 ⁇ m.
  • the groove in the first embodiment, has a depth of 1 ⁇ m or more and 1 mm or less.
  • the groove preferably has a depth of 5 to 500 ⁇ m.
  • a plurality of the grooves are formed in parallel and the interval between the grooves is 1 ⁇ m or more and 1 mm or less.
  • the interval is preferably 5 to 500 ⁇ m.
  • the grooves are arranged and formed in a lattice shape.
  • the groove preferably has a triangular cross-sectional shape.
  • a crack is formed on the inner surface of the groove.
  • the implant body in any one of the first to third embodiments, is made of titanium or zirconia.
  • the first embodiment of the abutment body of the present invention is an abutment body that fits into the center hole of the implant body, and has a groove formed on the outer surface with a width of 1 ⁇ m or more and 1 mm or less.
  • the groove is preferably formed in a region of the outer surface that directly contacts the gums.
  • the width is preferably 5 to 500 ⁇ m.
  • the groove in a second embodiment of the abutment body of the present invention, in the first embodiment, has a depth of 1 ⁇ m or more and 1 mm or less.
  • the groove preferably has a depth of 5 to 500 ⁇ m.
  • a plurality of the grooves are formed in parallel and the interval between the grooves is 1 ⁇ m or more and 1 mm or less.
  • the interval is preferably 5 to 500 ⁇ m.
  • the grooves are arranged and formed in a lattice shape.
  • the groove preferably has a triangular cross-sectional shape.
  • a crack is formed on the inner surface of the groove.
  • the implant body is made of titanium or zirconia.
  • An embodiment of the implant of the present invention comprises any one of the first to fourth embodiments of the implant body of the present invention and any one of the first to fourth embodiments of the abutment body of the present invention. .
  • a first embodiment of an implant manufacturing method of the present invention is an implant manufacturing method comprising: an implant body that is embedded in a bone and bone-bonded; and an abutment body that fits into a central hole of the implant body. And a step of scanning at least one outer surface of the implant body or the abutment body while irradiating a laser beam to form a groove having a width of 1 ⁇ m or more and 1 mm or less.
  • the laser beam is a fundamental wave of an Nd: YAG laser or a YVO4 laser.
  • a strong bone bond can be obtained.
  • FIG. 4 is an enlarged view of FIG. 3.
  • FIG. 6 is an enlarged view of FIG. 5.
  • FIG. 5 It is a figure which shows the three-dimensional measurement data of a microgroove. It is a side view of a fine groove. It is an enlarged view of FIG. It is a longitudinal cross-sectional enlarged view of a fine groove
  • FIG. 1 shows a dental implant.
  • FIG. 2 is a view showing an implant body according to the embodiment of the present invention.
  • the implant 5 is used in the dental field.
  • the implant 5 includes an implant body 10 that is fixed to the alveolar bone 2 and an abutment body 8 that can be attached to and detached from the implant body 10.
  • An artificial crown 6 is attached to the abutment body 8.
  • a male screw 12 is formed on the outer surface 10S of the implant body 10.
  • the implant body 10 is fixed to the alveolar bone 2 by screwing the male screw 12 into a hole formed in the alveolar bone 2.
  • An artificial crown 6 is attached to the outer surface 8S of the abutment body 8 using an adhesive or the like.
  • a contact portion S between the implant body 10 and the abutment body 8 is covered by the gum 4 or the alveolar bone 2. In the contact portion S, the contact surfaces are finished with high accuracy, and the contact surfaces are in close contact with each other to prevent foreign matter from entering.
  • the implant body 10 is a cylindrical (axial) member formed of a ceramic material such as titanium or zirconia.
  • the implant body 10 is also called a fixture.
  • a male screw 12 is formed on the outer surface of the implant body 10.
  • a central hole 13 is opened in the rear end surface of the implant body 10.
  • the shape (length, thickness, etc.) of the implant body 10 is arbitrary. The case where the external thread 12 and the center hole 13 do not exist may be sufficient.
  • FIG. 3 is a view showing the fine groove M formed in the implant body 10.
  • FIG. 4 is an enlarged view of FIG. 3 and 4 are photographs of the implant body 10 taken with a microscope.
  • a fine groove M is formed on the outer surface 10S of the implant body 10.
  • the outer surface 10S includes an outer peripheral surface on which the male screw 12 is formed.
  • the outer surface 10S includes a tip surface and a male screw 12 (screw surface).
  • the fine groove M is formed in an arbitrary region (part) on the outer surface 10S of the implant body 10.
  • the area where the fine groove M is formed may be one place or a plurality of places.
  • the area of the region where the fine groove M is formed is arbitrary.
  • the fine groove M may be formed on almost the entire outer surface 10S. In particular, it is preferable to form the fine groove M in a region of the outer surface 10S that directly contacts the alveolar bone 2.
  • the cross-sectional shape of the fine groove M is formed in a triangle (isosceles triangle).
  • the cross-sectional shape of the fine groove M is not limited to a triangle, and may be, for example, a semicircular arc or a rectangle.
  • a large number of cracks W are formed on the inner surface (surface layer) of the fine groove M.
  • the reason why the fine grooves M are formed on the outer surface 10S is to roughen the outer surface 10S and increase the surface area. Furthermore, when bone cells enter the large number of cracks W formed on the inner surface of the fine groove M, high bone adhesion and bone bonding can be obtained. In particular, since the number of cracks W increases as the surface area of the outer surface 10S increases, the bone bonding period can be shortened.
  • the number of the fine grooves M is arbitrary.
  • the number of fine grooves M may be one, but is preferably a large number (plural).
  • the fine groove M is not limited to a straight line but may be a curved line.
  • the angle of the extending direction of the fine groove M with respect to the axial direction (longitudinal direction) of the implant body 10 is arbitrary.
  • the fine groove M is formed using a laser processing machine.
  • the implant body 10 is formed in advance through a press molding process, a preliminary sintering process, and a main sintering process.
  • the fine grooves M are formed.
  • the same portion is scanned one or more times while irradiating laser light. As the number of scans increases, the depth and width of the fine groove M increase.
  • Nd YAG laser or YVO4 laser is used for the laser light.
  • a fundamental wave of Nd: YAG laser or YVO4 laser (solid laser: wavelength 1064 nm, fiber laser: 1090 nm) can be used.
  • the light diameter (diameter) of the laser light is, for example, 5 to 50 ⁇ m.
  • the outer surface 10S is engraved by irradiating the outer surface 10S of the implant body 10 with laser light in air containing moisture.
  • a surface layer such as zirconium hydroxide having a hardness lower than that of the base material of the implant body 10 is formed.
  • the base material such as zirconia
  • zirconia or the like reacts with moisture to form a hydroxide-based substance (zirconium hydroxide or the like) on the surface layer.
  • a large number of cracks W are formed on the surface layer of zirconium hydroxide or the like, and the hardness is reduced.
  • a plurality of fine grooves M are formed in a lattice shape
  • scanning is performed at regular intervals in two directions (vertical direction and horizontal direction) perpendicular to the laser beam.
  • the interval at this time is the interval between the fine grooves M.
  • the width and depth of the fine groove M are determined according to the number of times of irradiation, the scanning speed, the laser light output, etc. with respect to the same location.
  • the width of the fine groove M is 1 ⁇ m or more and 1 mm or less.
  • the width of the fine groove M is preferably 5 to 500 ⁇ m.
  • the reason why the width of the fine groove M is 1 ⁇ m or more is to reliably increase the surface area of the outer surface 10S and form the crack W. It is difficult and inefficient to form a groove having a width of 1 ⁇ m or less.
  • the reason why the width of the fine groove M is 1 mm or less is to prevent a decrease in strength of the implant body 10.
  • the width may be uniform or different.
  • Each fine groove M may have a uniform width or a different width in the longitudinal direction.
  • the depth of the fine groove M is 1 ⁇ m or more and 1 mm or less.
  • the depth of the fine groove M is preferably 5 to 500 ⁇ m.
  • the reason why the depth of the fine groove M is 1 ⁇ m or more is to reliably increase the surface area of the outer surface 10S and form the crack W. It is difficult and inefficient to form a groove having a depth of 1 ⁇ m or less.
  • the reason why the depth of the fine groove M is 1 mm or less is to prevent a decrease in strength of the implant body 10.
  • the depth may be uniform or different.
  • Each fine groove M may have a uniform depth over the longitudinal direction or a different depth.
  • the interval between the fine grooves M is 1 ⁇ m or more and 1 mm or less.
  • the interval between the fine grooves M is preferably 5 to 500 ⁇ m.
  • the reason why the interval between the fine grooves M is 1 ⁇ m or more is to secure the strength of the portion between the fine grooves M so that the strength of the implant body 10 is not reduced. This is because it is difficult and inefficient to form grooves at intervals of 1 ⁇ m or less.
  • the reason why the interval between the fine grooves M is 1 mm or less is that the number of the fine grooves M is increased to surely increase the surface area of the outer surface 10S and form the crack W.
  • the intervals may be uniform or different.
  • the fine groove M may be formed after the pre-sintering treatment of the implant body 10.
  • the implant body 10 is contracted by the subsequent main sintering process, and the width and depth of the fine groove M are also reduced. Therefore, the width and depth of the fine groove M are formed large in advance in anticipation of contraction of the implant body 10.
  • channel M of the same shape as the case where it forms after this sintering process is obtained. Since the main sintering process is performed after the fine groove M is formed using the laser beam, the hardness of the outer surface of the implant body 10 does not decrease. However, since the surface area of the outer surface 10S of the implant body 10 is increased, a stronger bone bond can be obtained as compared with the conventional case.
  • a fine groove M may be formed on the outer surface 8S of the abutment body 8.
  • the outer surface 8S of the abutment body 8 includes an outer peripheral surface. It is preferable to form the fine groove M in a region of the outer surface 8S that directly contacts the gum 4.
  • the abutment body 8 is inserted into the central hole 13 of the implant body 10, and the fine groove M is formed in a region exposed to the outside when the artificial crown 6 is mounted on the abutment body 8.
  • the fine groove M is formed in an arbitrary region (part) on the outer surface 8S of the abutment body 8.
  • the area where the fine groove M is formed may be one place or a plurality of places.
  • the area of the region where the fine groove M is formed is arbitrary.
  • the shape, manufacturing method, and the like of the fine groove M are the same as those of the fine groove M formed on the outer surface 10S of the implant body 10. Thereby, the coupling
  • the bond (including bone bonding) of the implant 5 to the human body becomes stronger.
  • FIG. 5 is a diagram showing the fine grooves M formed in the flat zirconia material.
  • FIG. 6 is an enlarged view of FIG.
  • FIG. 7 is a diagram showing three-dimensional measurement data of the fine groove M.
  • FIG. 8 is an enlarged side view of the fine groove M.
  • FIG. 9 is an enlarged view of FIG.
  • FIG. 10 is an enlarged vertical cross-sectional view of the fine groove M.
  • FIG. 5, FIG. 6, FIG. 8, FIG. 9, and FIG. 10 are all photographs taken of the fine groove M with an SEM.
  • FIG. 7 shows the result of measuring the fine groove M with a three-dimensional measuring device.
  • a plurality of fine grooves M were formed on a plate-like zirconia material (sample material) and observed with an SEM or the like.
  • the method of forming the fine groove M is the same as the method of forming the fine groove M on the outer surface 10S of the implant body 10.
  • the fine groove M was formed to have a width of 1 ⁇ m or more and 1 mm or less.
  • the width of the fine groove M could be formed to about 10 ⁇ m. It is also possible to form the width of the fine groove M to 5 to 500 ⁇ m by adjusting the output of the laser light, the light diameter, and the like.
  • the fine groove M was formed with a depth of 1 ⁇ m or more and 1 mm or less.
  • the depth of the fine groove M could be formed to about 150 ⁇ m. It is also possible to form the fine groove M to a depth of 5 to 500 ⁇ m by adjusting the number of times of scanning with laser light.
  • the interval between the plurality of fine grooves M was 1 ⁇ m or more and 1 mm or less.
  • the interval between the fine grooves M could be formed to about 50 ⁇ m.
  • the scanning interval (pitch) of the laser light the interval between the fine grooves M can be formed to 5 to 500 ⁇ m.
  • the cross-sectional shape of the fine groove M was formed in a triangle (isosceles triangle). As shown in FIG. 10, many cracks W were formed on the inner surface of the fine groove M. Thus, it was confirmed that the fine groove M can be formed in the zirconia material.
  • the laser beam by the Nd: YAG laser or YVO4 laser is used, but the present invention is not limited to this. Any other laser beam may be employed as long as it is a high-energy laser beam that can form a zirconium hydroxide or the like by hydroxylating the surface of a base material such as zirconia.
  • the implant body of the dental implant (it is an artificial tooth root) inserted and fixed to perforation of an alveolar bone
  • the implant body of the present invention may be an implant body that is fixed in a contact state by being embedded in another part of bone.
  • the implant body of the present invention may be applied as an artificial bone or a bone prosthetic material in order to compensate for a bone deficient part generated by fracture or benign tumor resection or cartilage removed by lumbar spine surgery. You may employ
  • the fine grooves M are formed using laser light, but the present invention is not limited to this.
  • the fine groove M may be formed by cutting.
  • a fine groove can be formed by cutting.
  • the width of the fine groove M is 1 ⁇ m or more and 1 mm or less
  • the depth is 1 ⁇ m or more and 1 mm or less
  • the interval between the fine grooves M is 1 ⁇ m or more and 1 mm or less.
  • zirconia zirconium oxide
  • alumina aluminum oxide
  • yttrium oxide hafnium oxide
  • silicone oxide magnesium oxide
  • cerium oxide or the like
  • a metal material such as titanium or a titanium alloy may be employed.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & 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)
  • Dental Prosthetics (AREA)
  • Prostheses (AREA)
PCT/JP2013/082733 2012-12-27 2013-12-05 インプラント体、アバットメント体、インプラント、インプラントの製造方法 WO2014103653A1 (ja)

Applications Claiming Priority (2)

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JP2012285827A JP2014124500A (ja) 2012-12-27 2012-12-27 インプラント体、アバットメント体、インプラント、インプラントの製造方法
JP2012-285827 2012-12-27

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WO2014103653A1 true WO2014103653A1 (ja) 2014-07-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3539502A4 (en) * 2016-11-10 2020-06-17 Nantoh. Co., Ltd BIOLOGICAL TISSUE ADHESION SURFACE, IMPLANT, METHOD FOR SHAPING A BIOLOGICAL TISSUE ADHESION SURFACE AND METHOD FOR PRODUCING AN IMPLANT

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TR201505011A2 (tr) * 2015-04-23 2015-06-22 Hakki Celebi İmplantlar i̇çi̇n yüzey hazirlama yöntemi̇
KR101781087B1 (ko) 2015-12-10 2017-10-10 엄상호 지르코니아 임플란트 고정체
JP6373936B2 (ja) * 2016-11-16 2018-08-15 慶達科技股▲ふん▼有限公司 歯根インプラント
JP7355332B2 (ja) 2019-12-26 2023-10-03 国立大学法人大阪大学 インプラント
KR102311246B1 (ko) * 2021-01-28 2021-10-14 이노덴 주식회사 유동형 어버트먼트 및 이를 구비한 임플란트
KR102348066B1 (ko) * 2021-06-16 2022-01-05 장천석 레이저의 조사각 조절을 통한 치과용 임플란트의 표면 처리 방법
EP4285860A1 (en) * 2021-08-20 2023-12-06 B2Lab Co., Ltd. Surface-treated implant structure

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US5645740A (en) * 1993-11-01 1997-07-08 Naiman; Charles S. System and assemblage for producing microtexturized substrates and implants
JP2000166944A (ja) * 1998-12-11 2000-06-20 Wolfgang Dinkelacker インプラントおよびインプラントを作る方法
JP2006512122A (ja) * 2002-12-30 2006-04-13 ノベル バイオケアー アーベー (パブル) インプラント装置
JP2007525280A (ja) * 2004-07-29 2007-09-06 バイオロック インターナショナル, インコーポレイテッド 骨統合の促進のための外科用インプラント
JP2010005379A (ja) * 2008-05-30 2010-01-14 Nanto Precision Co Ltd インプラント体及びその製造方法並びに歯科用インプラント
JP2010194118A (ja) * 2009-02-25 2010-09-09 Gc Corp 歯科用アバットメント
JP2011514226A (ja) * 2008-03-18 2011-05-06 ノベル バイオケア サーヴィシィズ アーゲー 非対称歯科用インプラント
US20110200969A1 (en) * 2003-04-01 2011-08-18 Robert Schroering Band of Connective Tissue Grooves for Use with a Dental Implant or a Separate Abutment for a Dental Implant
WO2011154296A1 (en) * 2010-06-10 2011-12-15 Astra Tech Ab A dental fixture

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645740A (en) * 1993-11-01 1997-07-08 Naiman; Charles S. System and assemblage for producing microtexturized substrates and implants
JP2000166944A (ja) * 1998-12-11 2000-06-20 Wolfgang Dinkelacker インプラントおよびインプラントを作る方法
JP2006512122A (ja) * 2002-12-30 2006-04-13 ノベル バイオケアー アーベー (パブル) インプラント装置
US20110200969A1 (en) * 2003-04-01 2011-08-18 Robert Schroering Band of Connective Tissue Grooves for Use with a Dental Implant or a Separate Abutment for a Dental Implant
JP2007525280A (ja) * 2004-07-29 2007-09-06 バイオロック インターナショナル, インコーポレイテッド 骨統合の促進のための外科用インプラント
JP2011514226A (ja) * 2008-03-18 2011-05-06 ノベル バイオケア サーヴィシィズ アーゲー 非対称歯科用インプラント
JP2010005379A (ja) * 2008-05-30 2010-01-14 Nanto Precision Co Ltd インプラント体及びその製造方法並びに歯科用インプラント
JP2010194118A (ja) * 2009-02-25 2010-09-09 Gc Corp 歯科用アバットメント
WO2011154296A1 (en) * 2010-06-10 2011-12-15 Astra Tech Ab A dental fixture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3539502A4 (en) * 2016-11-10 2020-06-17 Nantoh. Co., Ltd BIOLOGICAL TISSUE ADHESION SURFACE, IMPLANT, METHOD FOR SHAPING A BIOLOGICAL TISSUE ADHESION SURFACE AND METHOD FOR PRODUCING AN IMPLANT
US11051915B2 (en) 2016-11-10 2021-07-06 Nantoh. Co., Ltd. Biological tissue rootage face, implant, method for forming biological tissue rootage face, and method for producing implant
US11596505B2 (en) 2016-11-10 2023-03-07 Nantoh. Co., Ltd Biological tissue rootage face, implant, method for forming biological tissue rootage face, and method for producing implant

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JP2014124500A (ja) 2014-07-07

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