JP2017056086A - Dental abutment screw having loosening-prevention mechanism - Google Patents
Dental abutment screw having loosening-prevention mechanism Download PDFInfo
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- JP2017056086A JP2017056086A JP2015184971A JP2015184971A JP2017056086A JP 2017056086 A JP2017056086 A JP 2017056086A JP 2015184971 A JP2015184971 A JP 2015184971A JP 2015184971 A JP2015184971 A JP 2015184971A JP 2017056086 A JP2017056086 A JP 2017056086A
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- 230000003340 mental effect Effects 0.000 claims 1
- 238000002513 implantation Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 56
- 239000007943 implant Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000018984 mastication Effects 0.000 description 3
- 238000010077 mastication Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004053 dental implant Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 238000010883 osseointegration Methods 0.000 description 1
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- Dental Prosthetics (AREA)
Abstract
Description
本発明は、繰り返し荷重が負荷されることによる緩みを防止することを特徴とした歯科用インプラントフィクスチャとアバットメントを締結するための歯科用アバットメントスクリュに関する。 The present invention relates to a dental abutment screw for fastening a dental implant fixture and an abutment characterized by preventing loosening due to repeated loading.
インプラント治療では、歯を喪失した部位（歯槽骨）にフィクスチャを埋植して骨との結合（オッセオインテグレーション）を十分に獲得できる期間経過後に、前記フィクスチャへアバットメントを挿入しアバットメントスクリュで締結させる。さらに前記アバットメントに上部構造体を装着することにより、口腔内で天然歯の代替として機能する。
インプラント治療を終えた患者は日常生活において咀嚼・咬合を繰り返すこととなるが、このような繰り返し負荷が加わることにより、アバットメントスクリュが徐々に緩み、意図していない応力集中が発生することで、最終的にインプラントが破折することがしばしば報告されている。
また、フィクスチャとアバットメントの初期の締結が弱いと繰り返される外部からの負荷に耐えられず、緩みが発生する。
ねじが緩む原因となる主な部位は座面部であり、その座面部の緩みを防止する方法が考えられているが、問題点もある。
特許文献1では、アバットメント座面の角度をスクリュ座面の角度より大きくし、且つ、アバットメントの中空下部を雌ねじ構造にすることで、螺合する際、アバットメントスクリュの雄ねじ部と係合し、同雌ねじ部の山が塑性変形することで固着力を得るとしている。しかしながら、塑性変形することで疲労強度が低下することは明白であり、アバットメントに亀裂・破壊が発生する。
特許文献2では、ヘッド座面に下方に伸びる突出部を有し、この突出部の面で接触させることで接触部の最小半径が大きくなることにより摩擦が大きくなり、初期固定力が向上するとしているが、接触面が小さくなることで応力が集中し、繰り返し荷重による亀裂・破壊につながる。
アバットメントに亀裂・破壊が生じると、メンテナンス時にはアバットメントを新しいものに取り替えなければならない。
In implant treatment, a fixture is inserted into the fixture after a period of time in which the fixture is implanted in the site where the tooth has been lost (alveolar bone) and sufficient bonding with the bone (osseointegration) has elapsed. Fasten with screws. Furthermore, by attaching an upper structure to the abutment, it functions as a substitute for natural teeth in the oral cavity.
The patient who has completed the implant treatment will repeat mastication and occlusion in daily life, but by applying such repeated load, the abutment screw gradually loosens, causing unintended stress concentration, It is often reported that the implant eventually breaks.
In addition, if the initial fastening of the fixture and the abutment is weak, it cannot withstand repeated external loads and looseness occurs.
The main part that causes the screw to loosen is the seating surface, and a method for preventing the seating surface from loosening has been considered, but there are also problems.
In Patent Document 1, the angle of the abutment seat surface is made larger than the angle of the screw seat surface, and the hollow lower portion of the abutment is formed into a female screw structure, so that it engages with the male screw portion of the abutment screw. In addition, a fixing force is obtained by plastic deformation of the crest of the female screw portion. However, it is clear that the fatigue strength decreases due to plastic deformation, and cracks and fractures occur in the abutment.
In Patent Document 2, it is assumed that the head seat surface has a protruding portion that extends downward, and that the minimum radius of the contact portion increases by making contact with the surface of the protruding portion, thereby increasing friction and improving the initial fixing force. However, as the contact surface becomes smaller, stress concentrates, leading to cracks and breakage due to repeated loading.
If an abutment cracks or breaks, the abutment must be replaced with a new one during maintenance.
本発明の目的は、インプラント治療後に日常生活の中で繰り返される咀嚼・咬合により生じるねじの緩みを防止するための歯科用アバットメントスクリュを提供することである。
緩みを防止することで、意図していない応力集中によるフィクスチャの破折を防ぐことができる。また、たとえ長期の金属疲労の蓄積によりアバットメントスクリュのヘッド部が塑性変形を起こし亀裂・破壊が発生した場合においても、アバットメントスクリュを交換するだけで臨床対応が可能となり、アバットメントを再利用することも可能である。
An object of the present invention is to provide a dental abutment screw for preventing screw loosening caused by repeated mastication and occlusion in daily life after implant treatment.
By preventing loosening, it is possible to prevent the fixture from being broken due to unintended stress concentration. In addition, even if the head part of the abutment screw undergoes plastic deformation due to accumulation of long-term metal fatigue and cracks and fractures occur, it is possible to respond clinically by simply replacing the abutment screw, and reuse the abutment. It is also possible to do.
本発明は、アバットメントとフィクスチャを締結する歯科用アバットメントスクリュであって、一端がフィクスチャ内部の雌ねじ部と螺合するネジ部であり、シャンク部を介して、もう一端に中空貫通孔を有したアバットメントの内部に設けられた段差であるアバットメント座面と係合するヘッド座面を有するヘッド部、からなる歯科用アバットメントスクリュにおいて、アバットメントとフィクスチャの締結時にヘッド座面が弾性変形するようにヘッド部に溝を設けることを特徴とする、歯科用アバットメントスクリュを提供する。
ヘッド座面と長軸とのなす角度が、アバットメント座面と長軸とのなす角度以上であり、かつ、長軸とのなす角度が90°以下であることを特徴とする。
上記形状により、係合するヘッド座面とアバットメント座面は締結時に面接触する。また、ヘッド座面とアバットメント座面は円環状に接触する。ただし、座面は均一な面である必要はなく、部分的に溝やスリットを設けても良い。
The present invention is a dental abutment screw for fastening an abutment and a fixture, one end of which is a screw portion screwed with a female screw portion inside the fixture, and a hollow through hole at the other end via a shank portion In a dental abutment screw comprising a head portion having a head seating surface that engages with an abutment seating surface that is a step provided in an abutment having a head, the head seating surface when fastening the abutment and the fixture A dental abutment screw is provided, wherein a groove is provided in the head portion so that the elastic deformation of the dental abutment screw.
The angle formed between the head seat surface and the major axis is greater than or equal to the angle between the abutment seat surface and the major axis, and the angle formed between the major axis is 90 ° or less.
Due to the shape described above, the head seat surface and the abutment seat surface to be engaged are brought into surface contact with each other when fastening. Further, the head seat surface and the abutment seat surface are in an annular contact. However, the seating surface does not need to be a uniform surface, and a groove or a slit may be partially provided.
ヘッド部に設けた溝の深さは、
{（ヘッド径）−（シャンク径）}／10以上、{（ヘッド径）−（シャンク径）}／2未満、であり、好ましくは、{（ヘッド径）−（シャンク径）}／6以上、{（ヘッド径）−（シャンク径）}／2 未満であることが好ましい。
溝はヘッド部側面から内部に向かって設けられており、シャンク径を越えた深さまで到達する溝は、トルク強度低下の要因となるため好ましくない。
本発明の歯科用アバットメントスクリュは、
ヘッド部が、長軸方向に長さ1.5〜30mm、ヘッド径φ1.5〜5 mm、
シャンク部が、長軸方向に長さ2〜20mm、シャンク径φ0.7〜2.1 mm、
ネジ部が、長軸方向に長さ1〜10mm、ネジ径M1〜2.5、である形状を有することが好ましい。
さらに、ヘッド部とシャンク部とネジ部の各径が、ヘッド径＞ネジ径＞シャンク径であることが好ましい。
The depth of the groove provided in the head is
{(Head diameter) − (shank diameter)} / 10 or more, {(head diameter) − (shank diameter)} / 2 or less, preferably {(head diameter) − (shank diameter)} / 6 or more , {(Head diameter) − (shank diameter)} / 2 or less.
The groove is provided from the side surface of the head portion toward the inside, and the groove reaching the depth exceeding the shank diameter is not preferable because it causes a decrease in torque strength.
The dental abutment screw of the present invention is
The head is 1.5 to 30mm long in the long axis direction, head diameter φ1.5 to 5mm,
The shank part has a length of 2 to 20 mm in the long axis direction, a shank diameter of 0.7 to 2.1 mm,
It is preferable that the screw portion has a shape having a length of 1 to 10 mm and a screw diameter M1 to 2.5 in the major axis direction.
Furthermore, it is preferable that each diameter of a head part, a shank part, and a screw part is head diameter> screw diameter> shank diameter.
ネジ部は雄ねじ形状を有しており、ネジ径は雄ねじ山の径とする。
ネジ径＞シャンク径となることで、アバットメントスクリュが破折する場合に、破折箇所がネジ部となるリスクを低減することができる。
上述の形状を有することで、歯科用アバットメントスクリュのヘッド部側面及びシャンク部はアバットメントの中空内壁とは係合せず、アバットメント座面とヘッド座面のみが係合することとなる。
さらに、ヘッド部に溝を有しているため、螺合する際には係合しているヘッド座面が優先的に弾性変形することとなる。
The screw portion has a male screw shape, and the screw diameter is the diameter of the male screw thread.
When the screw diameter> the shank diameter, when the abutment screw breaks, the risk that the broken portion becomes the screw portion can be reduced.
By having the above-mentioned shape, the head side surface and the shank portion of the dental abutment screw are not engaged with the hollow inner wall of the abutment, and only the abutment seat surface and the head seat surface are engaged.
Further, since the head portion has a groove, the engaged head seat surface is preferentially elastically deformed when screwed.
本発明によれば、インプラントとアバットメントを締結するためアバットメントスクリュで螺合する際に、ヘッド座面が優先的に弾性変形することでアバットメントとフィクスチャの締結が強固なものとなり、繰り返し荷重が負荷されることに対するねじの緩みが発生しにくくなる。
また、長期的な金属疲労の蓄積によってスクリュヘッドが塑性変形を起こし亀裂・破壊が生じた場合においても、係合した座面が塑性変形していないためアバットメントに負荷がかかることなく、アバットメントスクリュの交換のみで臨床対応できる。アバットメントを再利用できるため、臨床時間の軽減と経費の削減が可能となる。
According to the present invention, when screwing with an abutment screw to fasten the implant and the abutment, the head seating surface is preferentially elastically deformed so that the fastening of the abutment and the fixture becomes strong. The screw is less likely to be loosened when a load is applied.
In addition, even if the screw head undergoes plastic deformation due to long-term accumulation of metal fatigue and cracks and fractures occur, the abutment is not loaded because the engaged seating surface is not plastically deformed. It can be clinically supported only by screw replacement. Because the abutment can be reused, clinical time and costs can be reduced.
歯科用アバットメントスクリュは、顎骨内に埋植されたフィクスチャに上部構造体を装着するための支台部として働くアバットメントを締結するための部材として機能する。アバットメントスクリュはフィクスチャと嵌合させたアバットメントの中空貫通孔内へ挿入され、フィクスチャ内部の雌ねじ部と螺合することで締結させることができる。
アバットメントスクリュの材質は、主にチタンやチタン合金があり、チタン合金にはチタン 6−アルミニウム 4−バナジウム合金やチタン 6−アルミニウム 7−ニオブ合金が選択されるが、材質は特に限定されるものではない。
本発明の歯科用アバットメントスクリュは、顎骨内に埋入されたフィクスチャにアバットメントを固定するために螺合させて使用する、歯科用アバットメントスクリュである。
フィクスチャは、内部に雌ねじ形状を有し、アバットメントは、中空貫通孔を設けており、内部にはアバットメント座面となる段差形状を有している。
The dental abutment screw functions as a member for fastening an abutment that functions as an abutment for attaching the upper structure to a fixture implanted in the jawbone. The abutment screw is inserted into the hollow through hole of the abutment fitted with the fixture, and can be fastened by screwing with the internal thread portion inside the fixture.
The material of the abutment screw is mainly titanium or titanium alloy, and titanium 6-aluminum 4-vanadium alloy or titanium 6-aluminum 7-niobium alloy is selected as the titanium alloy, but the material is particularly limited is not.
The dental abutment screw of the present invention is a dental abutment screw that is used by screwing to a fixture embedded in the jawbone to fix the abutment.
The fixture has an internal thread shape inside, the abutment has a hollow through hole, and has a step shape that becomes an abutment seat surface inside.
本発明の代表的な歯科用アバットメントスクリュの形状を図1に示す。歯科用アバットメントスクリュは、フィクスチャの雌ねじ部と螺合する雄ねじ形状のネジ部（3）と、シャンク部（2）を介して、もう一端にヘッド座面（5）を有したヘッド部（1）からなる形状となっている。
ヘッド部の上面には操作するための駆動部（6）を有している。
ヘッド部の駆動部は、ヘッド部の上面に設けられており、キャビティ構造を有している。駆動部の形状は、十字、すりわり、六角及びへクサロビュラを主としているが、限定されるものではない。
ネジ部の雄ねじ形状は、ねじ山、ねじ深さ、ピッチ、リード及び条数に関して特に限定しない。
The shape of a typical dental abutment screw of the present invention is shown in FIG. The dental abutment screw has a male screw-shaped screw part (3) screwed to the female screw part of the fixture, and a head part having a head seating surface (5) on the other end via a shank part (2) ( 1).
A drive unit (6) for operation is provided on the upper surface of the head unit.
The drive unit of the head unit is provided on the upper surface of the head unit and has a cavity structure. The shape of the drive unit is mainly a cross, a slit, a hexagon, and a hexalobular but is not limited.
The male thread shape of the threaded portion is not particularly limited with respect to the thread, the thread depth, the pitch, the lead, and the number of threads.
ヘッド座面は図2に示すように、アバットメント座面（8）と係合し、締結時に面接触する。ヘッド座面は円環状に面接触するような形状であるが、図3に示すように、スリットや溝を設けても良い。
本発明の歯科用アバットメントスクリュの基本的な形状は、
ヘッド部が、長軸方向に長さ1.5〜30mm、ヘッド径φ1.5〜5 mm、
シャンク部が、長軸方向に長さ2〜20mm、シャンク径φ0.7〜2.1 mm、
ネジ部が、長軸方向に長さ1〜10mm、ネジ径M1〜2.5、である。
さらに好ましくは、
ヘッド部が、長軸方向に長さ2〜15mm、ヘッド径φ2〜3 mm、
シャンク部が、長軸方向に長さ3〜10mm、シャンク径φ0.9〜1.8 mm、
ネジ部が、長軸方向に長さ2〜5mm、ネジ径M1.2〜2.2、である。
ヘッド部、シャンク部及びネジ部の各径の大きさは、ヘッド径＞ネジ径＞シャンク径の関係であることが好ましい。また、シャンク径はネジ部の雄ねじ谷の径以下であることが好ましく、さらに好ましくは、両者が同径である。
ヘッド座面と長軸とのなす角度（α）は、アバットメント座面と長軸とのなす角度（β）以上であり、かつ、長軸とのなす角度が90°以下である。
好ましくは、ヘッド座面と長軸とのなす角度（α）が、アバットメント座面と長軸とのなす角度（β）以上であり、かつ、長軸とのなす角度がアバットメント座面と長軸とのなす角度（β）の6／5未満である。
さらに好ましくは、ヘッド座面と長軸とのなす角度（α）が、アバットメント座面と長軸とのなす角度（β）以上であり、かつ、40°以上65°以下である。
As shown in FIG. 2, the head seating surface engages with the abutment seating surface (8) and comes into surface contact when fastened. The head seating surface is shaped so as to make surface contact in an annular shape, but a slit or groove may be provided as shown in FIG.
The basic shape of the dental abutment screw of the present invention is:
The head is 1.5 to 30mm long in the long axis direction, head diameter φ1.5 to 5mm,
The shank part has a length of 2 to 20 mm in the long axis direction, a shank diameter of 0.7 to 2.1 mm,
The threaded portion has a length of 1 to 10 mm and a thread diameter of M1 to 2.5 in the major axis direction.
More preferably,
The head part has a length of 2 to 15 mm in the major axis direction, a head diameter of 2 to 3 mm,
The shank part has a length of 3 to 10 mm in the major axis direction, a shank diameter of 0.9 to 1.8 mm,
The threaded portion has a length of 2 to 5 mm and a thread diameter of M1.2 to 2.2 in the major axis direction.
The sizes of the head portion, the shank portion, and the screw portion preferably have a relationship of head diameter> screw diameter> shank diameter. Moreover, it is preferable that a shank diameter is below the diameter of the external thread valley of a thread part, More preferably, both have the same diameter.
The angle (α) formed between the head seat surface and the major axis is equal to or greater than the angle (β) formed between the abutment seat surface and the major axis, and the angle formed between the major axis is 90 ° or less.
Preferably, the angle (α) formed between the head seat surface and the long axis is equal to or greater than the angle (β) formed between the abutment seat surface and the long axis, and the angle formed between the long axis and the abutment seat surface is It is less than 6/5 of the angle (β) with the major axis.
More preferably, the angle (α) formed between the head seat surface and the long axis is equal to or greater than the angle (β) formed between the abutment seat surface and the long axis, and is 40 ° or greater and 65 ° or less.
ヘッド部の溝の深さは、
{（ヘッド径）−（シャンク径）}／10以上、{（ヘッド径）−（シャンク径）}／2未満、であり、好ましくは、{（ヘッド径）−（シャンク径）}／6以上、{（ヘッド径）−（シャンク径）}／2未満である。
ヘッド部の溝（４）の位置は、特に限定はしないが、ヘッド部の下部に近い方がより好ましい。また、ヘッド部の天面に近い部位の内部には駆動部となるキャビティ構造があることから、上部に近い部位においては深い溝は螺合による締結強度低下の原因となるため好ましくない。
The groove depth of the head is
{(Head diameter) − (shank diameter)} / 10 or more, {(head diameter) − (shank diameter)} / 2 or less, preferably {(head diameter) − (shank diameter)} / 6 or more , {(Head diameter) − (shank diameter)} / 2.
The position of the groove (4) in the head part is not particularly limited, but is preferably closer to the lower part of the head part. In addition, since there is a cavity structure serving as a driving part inside the part near the top surface of the head part, deep grooves in the part near the top cause undesirably lower fastening strength due to screwing.
ヘッド部の溝の数についても、特に限定はしない。ただし、複数個の溝がある場合はヘッド座面からヘッド部の天面方向にかけて溝深さは同等以下になることが好ましい。
ヘッド部の溝の形状は、断面が円弧、くさび及び四角を主とするが限定はしない。
アバットメントスクリュのネジ部がフィクスチャの雌ねじ部と螺合する時、ヘッド座面がアバットメント中空貫通孔内に設けられたアバットメント座面と係合するが、アバットメント中空貫通孔内壁面（9）とヘッド部側面（10）及びシャンク部側面（11）とは係合しない。さらに、ヘッド部に溝を有することによって、当該箇所がばねの働きをし、係合した座面部分を優先的に弾性変形させて、初期固定力を高めることができる。そのため、咀嚼や咬合による繰り返し負荷が加わった場合でも、ねじの緩みが発生せず、より長期的な使用が可能となる。
ヘッド部とシャンク部の境界部分には、少なくとも一つの5〜50μmの深さの微小な溝（12）を設けても良い。
この溝を設けることにより、さらに螺合による締結強度を向上させることができる。
The number of grooves in the head part is not particularly limited. However, when there are a plurality of grooves, the groove depth is preferably equal or less from the head seat surface to the top surface direction of the head portion.
The shape of the groove of the head portion is not limited, although the cross section mainly includes an arc, a wedge, and a square.
When the screw portion of the abutment screw is screwed with the female screw portion of the fixture, the head seat surface engages with the abutment seat surface provided in the abutment hollow through hole, but the inner wall surface of the abutment hollow through hole ( 9) The head side surface (10) and the shank side surface (11) do not engage. Furthermore, by having a groove in the head portion, the location acts as a spring, and the engaged seating surface portion can be preferentially elastically deformed to increase the initial fixing force. Therefore, even when a repeated load due to mastication or occlusion is applied, the screw does not loosen and can be used for a longer period.
You may provide at least 1 minute groove | channel (12) of the depth of 5-50 micrometers in the boundary part of a head part and a shank part.
By providing this groove, the fastening strength by screwing can be further improved.
歯科用アバットメントスクリュとして歯科業界で利用する為、産業上利用するものである。 It is used industrially because it is used in the dental industry as a dental abutment screw.
1 ヘッド部
2 シャンク部
3 ネジ部
4 ヘッド部の溝
5 ヘッド座面
6 駆動部
7 アバットメント
8 アバットメント座面
9 アバットメント中空貫通孔内壁面
10 ヘッド部側面
11 シャンク部側面
12 ヘッド部とシャンク部の境界部分の微小溝
1 Head
2 Shank part
3 Screw part
4 Head groove
5 Head seating surface
6 Drive unit
7 Abutment
8 Abutment seat
9 Abutment hollow through hole inner wall
10 Head side
11 Shank side
12 Micro groove at the boundary between the head and shank
Claims (7)
一端がフィクスチャ内部の雌ねじ部と螺合するネジ部であり、シャンク部を介して、もう一端に中空貫通孔を有したアバットメントの内部に設けられた段差であるアバットメント座面と係合するヘッド座面を有するヘッド部、
からなる歯科用アバットメントスクリュにおいて、
アバットメントとフィクスチャの締結時にヘッド座面が弾性変形するようにヘッド部に溝を設けることを特徴とする、歯科用アバットメントスクリュ。 A dental abutment screw for fastening an abutment and a fixture,
One end is a threaded part that engages with the female threaded part inside the fixture, and engages with the abutment seating surface, which is a step provided inside the abutment that has a hollow through hole at the other end via the shank part. A head portion having a head seating surface,
A dental abutment screw comprising:
A dental abutment screw, characterized in that a groove is provided in the head portion so that the head seating surface is elastically deformed when the abutment and the fixture are fastened.
{（ヘッド径）−（シャンク径）}／10以上、{（ヘッド径）−（シャンク径）}／2未満であることを特徴とした請求項1〜4のいずれかに記載の歯科用アバットメントスクリュ。 The groove depth of the head is
The dental abutment according to any one of claims 1 to 4, wherein {(head diameter)-(shank diameter)} / 10 or more and less than {(head diameter)-(shank diameter)} / 2. Mental screw.
シャンク部が、長軸方向に長さ2〜20mm、シャンク径φ0.7〜2.1 mm、
ネジ部が、長軸方向に長さ1〜10mm、ネジ径M1〜2.5、
であることを特徴とした請求項1〜5のいずれかに記載の歯科用アバットメントスクリュ。 The head is 1.5 to 30mm long in the long axis direction, head diameter φ1.5 to 5mm,
The shank part has a length of 2 to 20 mm in the long axis direction, a shank diameter of 0.7 to 2.1 mm,
The screw part has a length of 1 to 10mm in the long axis direction, a screw diameter of M1 to 2.5,
The dental abutment screw according to any one of claims 1 to 5, wherein
The dental abutment screw according to any one of claims 1 to 6, wherein each diameter of the head portion, the shank portion, and the screw portion is head diameter> screw diameter> shank diameter.
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| JP7471102B2 (en) | 2020-02-20 | 2024-04-19 | 株式会社ジーシー | Abutment fastening screw and dental implant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000047113A2 (en) * | 1999-02-15 | 2000-08-17 | Andrea Bazzurro | Screw connection device for osteo-integrated plants, method and apparatus for tightening this device |
| US20060216672A1 (en) * | 2003-04-17 | 2006-09-28 | Wolfgang Dinkelacker | Jaw implant |
| US20080039837A1 (en) * | 2006-08-10 | 2008-02-14 | Gambale Michael A | Method and apparatus for treatment of bones |
| US8951042B2 (en) * | 2011-04-20 | 2015-02-10 | Redtenbacher Praezisionsteile Ges.M.B.H. | Dental prosthesis |
-
2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000047113A2 (en) * | 1999-02-15 | 2000-08-17 | Andrea Bazzurro | Screw connection device for osteo-integrated plants, method and apparatus for tightening this device |
| US20060216672A1 (en) * | 2003-04-17 | 2006-09-28 | Wolfgang Dinkelacker | Jaw implant |
| US20080039837A1 (en) * | 2006-08-10 | 2008-02-14 | Gambale Michael A | Method and apparatus for treatment of bones |
| US8951042B2 (en) * | 2011-04-20 | 2015-02-10 | Redtenbacher Praezisionsteile Ges.M.B.H. | Dental prosthesis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7471102B2 (en) | 2020-02-20 | 2024-04-19 | 株式会社ジーシー | Abutment fastening screw and dental implant |
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