WO2010098385A1 - ガッタパーチャ除去器具 - Google Patents
ガッタパーチャ除去器具 Download PDFInfo
- Publication number
- WO2010098385A1 WO2010098385A1 PCT/JP2010/052964 JP2010052964W WO2010098385A1 WO 2010098385 A1 WO2010098385 A1 WO 2010098385A1 JP 2010052964 W JP2010052964 W JP 2010052964W WO 2010098385 A1 WO2010098385 A1 WO 2010098385A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gutta
- percha
- section
- cross
- working
- Prior art date
Links
- 239000000899 Gutta-Percha Substances 0.000 title claims abstract description 94
- 240000000342 Palaquium gutta Species 0.000 title claims abstract description 94
- 229920000588 gutta-percha Polymers 0.000 title claims abstract description 94
- 210000004262 dental pulp cavity Anatomy 0.000 abstract description 50
- 239000000463 material Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 4
- 229910001000 nickel titanium Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000035415 Reinfection Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 210000004268 dentin Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 210000004746 tooth root Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/46—Nerve extractors, e.g. needles; Means for removing broken parts of endodontic instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/42—Files for root canals; Handgrips or guiding means therefor
Definitions
- the present invention relates to a dental treatment instrument, and more particularly to a gutta-percha removal instrument for removing gutta-percha filled in a root canal.
- the root canal of the patient's teeth is cut to remove the infected part and formed into a suitable shape, and then a gap between the gutta percha and the gutta percha and the root canal wall as a filler to prevent reinfection. Work is being done to fill the sealer.
- gutta percha Conventionally, as a dental treatment tool for removing this gutta percha, there is no specialized treatment tool, and a reamer or a file has been diverted.
- the root canal is curved into various shapes, such as a spiral shape and an extremely curved shape at the apex, in addition to the straight part, but the way the reamer or file bends (bends) It is not uniform in the length direction of the part, so it cannot follow the shape of the root canal, and the gutta-percha in the root canal cannot be removed sufficiently. There was also the problem of breaking.
- the working part of the file hits only one side of the curved part of the root canal and does not hit the opposite side, and the gutta percha remains, There is a problem that stress concentrates on the tip and breaks.
- the cross-sectional area of the cross section cut in the direction orthogonal to the rotation axis of the working part is reduced toward the tip at the same rate as the taper ratio of the working part.
- it is easy to bend at the distal end of the working part, and difficult to bend at the proximal end of the working part.
- the cross-sectional area is large on the base end side, the space (gap between the root canal wall) for moving the removed gutta percha is small, and the gutta percha is difficult to be discharged.
- Patent Document 1 Japanese Patent No. 3731187 proposes an endodontic treatment instrument having tissue removal edges provided at irregular intervals on the outer periphery of the shaft. This tissue removal edge is more at the inside and outside of the root canal curvature than the conventional symmetrical instrument, which tends to cut the inside of the root canal curvature by the force that the instrument acts on the root canal wall when bent. A uniform cutting force can be given.
- Patent Document 2 Japanese Patent Laid-Open No. 2002-253578 proposes a dental reamer having a cross-sectional shape that is twisted by deleting two lines so as to leave a circle center and two arcs. By adopting such a shape, the cutting performance can be reduced as compared with the conventional one, and the flexibility can be increased to improve the followability to the curvature of the root canal.
- Patent Document 3 Japanese Patent Laid-Open No. 2001-170076
- the cross-sectional shape of a file is composed of an arc and a chord, and the height of the cross section connecting the apex of the arc and the midpoint of the chord is L
- the circle of the arc A dental root canal treatment instrument is proposed in which L is (5/8) D or more, where D is the diameter.
- Patent Document 4 Japanese Patent Laid-Open No. 2000-83968
- the cross section of the file working portion is rectangular. Furthermore, it is proposed that the aspect ratio of the rectangle is changed in the length direction (axial direction) so as to exhibit different flexibility. Taking advantage of the increased flexibility when the aspect ratio is increased.
- the present invention aims to solve the above problems, and is suitable for removing gutta-percha and is flexible enough to follow the curvature of the root canal and forms a sufficient gap with the root canal wall. It is an object of the present invention to provide a gutta-percha removing device having excellent dischargeability.
- a gutta-percha removing device of the present invention comprises a shaft portion, a tapered working portion connected to the shaft portion, and one or more spiral grooves formed in the working portion. And when the cross section of the base end and the tip of the working section is taken, the ratio of the area of each cross section to the area of the circle circumscribing the cross section is larger at the tip of the working section It is characterized by that.
- the working section has a cross section formed by a circular arc circumscribing the cross section and curves connecting both ends of the arc, or the rake angle of the working section in the rotational direction is ⁇ 50.
- (the area of the cross section / the area of the circumscribed circle of the cross section) is 80 ⁇ 5% at the front end of the working part and 50 ⁇ 5% at the base end of the working part.
- a certain configuration, that is, (the area of the cross section / the area of the circumscribed circle of the cross section) is such that the front end of the working unit is 1.36 to 1.89 times the base end of the working unit.
- a gutta-percha removal device is attached to the handpiece, and the working part is pressed against the gutta-percha in the root canal by applying rotation. Then, in the root canal stenosis, the frictional heat is generated within the narrow root canal due to the rotation of the gutta-percha removal device and the gutta-percha, and the gutta-percha is softened so as to extend and peel off from the root canal. Then, the softened gutta percha can be removed by being caught in the spiral groove formed in the working part of the gutta percha removing tool.
- the removal pieces of the gutta percha are composed of an integrated lump or a small piece of removal, and these removal pieces can be discharged out of the root canal by a spiral groove.
- the ratio of the area of the cross section to the area of the circle circumscribing the cross section is increased on the distal end side of the working section, the distal end and the proximal end of the working section are uniformly bent, and the root It can bend following various curves of the tube, and the space between the proximal end and the root canal wall is large, so that the gutta percha can be easily discharged. Therefore, the filled gutta percha can be removed cleanly without remaining.
- the cross section of the working part is formed by a circular arc circumscribing the cross section and curves connecting both ends of the circular arc, the rake angle at the front end in the rotation direction of the working part is set to be negative. And the area of each cross section can be adjusted. In particular, the ratio of the area of the cross section on the base end side to the area of the circle circumscribing the cross section can be made smaller than that of the front end side of the working unit.
- the rake angle at the tip of the working part in the rotational direction is ⁇ 50 ° or less, there is no cutting blade, so the gutta percha can be removed in an integrated lump without cutting.
- FIG. 1A is a cross-sectional view taken along the line AA in FIG. 1, and FIG.
- the difference between the gutta-percha remover and the reamer or file is (i) The reamer or file has a cutting edge for cutting the root canal wall, but the gutta-percha removal device does not have a cutting edge for cutting the root canal wall. (ii) Reamers and files are mainly used by rotating them by hand or moving them back and forth in the axial direction, but as a rule, gutta-percha removal devices are attached to rotating tools such as handpieces and rotated by electric means. use. (iii) The reamer or file has a taper of about 2/100 in the working part, but the gutta-percha removal device has a large taper up to about 10/100.
- root canal formation is performed using a set of multiple tapes that gradually increase in thickness, but the gutta-percha remover is adapted to the degree of curvature of the root canal and the size of the root canal opening. Remove gutta percha using 2-3 instruments.
- the reamer or file is intended for root canal formation, so the tip diameter is about 0.06 to 1.4 mm. However, the tip diameter of the gutta-percha remover is to remove the gutta-percha from the already formed root canal. Therefore, it is about 0.2 to 1.0 mm.
- the length of the work part of the reamer or file is 16 mm, but the length of the work part of the gutta-percha removal device is about 12 mm to 16 mm.
- FIG. 1 is a front view of a gutta-percha removing device of the present invention.
- the gutta-percha removing device 10 has a grip portion 11 attached to a rotating device at one end, and a shaft portion 12 is connected to the grip portion 11.
- the shaft portion 12 is integrally formed with a tapered working portion 13.
- Stainless steel or Ni—Ti material is used from the shaft portion 12 to the working portion 13.
- the Ni—Ti material is a shape memory alloy and is a superelastic material, so that it has excellent flexibility.
- the working unit 13 is tapered.
- the taper is attached to the reamer or the file, and the taper in the case of the reamer or the file is about 2/100.
- the root canal is also tapered, but this taper is larger than the taper of the reamer or the file and is about 5/100 to 7/100.
- the gutta-percha removing device 10 may have a taper in the range of 2/100 to 10/100, but various types of taper can be used depending on the root canal site to be used. About 4/100 to 10/100 is preferable, and about 3/100 to 5/100 is preferable for a curved portion at the back of the root canal.
- the rotational torque can be easily transmitted to the gutta percha and the gutta percha can be easily removed.
- the taper may be gradually increased from the distal end toward the proximal end without making the taper constant.
- the taper at the tip may be changed to 2/100 and gradually changed to 7/100 at the proximal end.
- a spiral groove 14 is formed in the working unit 13.
- the spiral groove 14 is formed by grinding with a rotating grindstone.
- a Ni—Ti material it is difficult to form a spiral groove by twisting, but the spiral groove 14 can be easily formed by grinding.
- a plurality of spiral grooves can be formed, but only one can be formed by grinding.
- the pitch of the spiral groove 14 is less than that of a reamer or file so that the gutta-percha is not drawn in the apical direction and is easily discharged as an integrated lump. It is getting bigger. Further, the pitch may be constant throughout the working unit 13 or may be changed. However, if the pitch of the spiral groove 14 is also made smaller on the distal end side and larger on the proximal end side than on the distal end side, the fatigue fracture characteristics are improved and the fracture becomes difficult. Moreover, although a pitch is comprised from a crest width and a groove width, the way of bending can be made uniform in the length direction of a working part by making crest width substantially constant.
- the crest width is uniformly formed from 0.9 mm to the proximal end of the working part.
- the most advanced pitch is 1.3 mm (groove width is 0.4 mm)
- the most proximal pitch is 1.8 mm (groove width is 0.9 mm)
- the number of peaks is ten.
- the pitch is 1.65 mm (groove width is 0.75 mm) and 2.2 mm (groove width is 1.2 mm), respectively, and the number of peaks is six.
- the width of the mountain is preferably substantially constant as described above, and the overall length of the working portion is formed by changing the entire length of the working portion from 0 to 25% while balancing with the depth of the groove. The effect of making the deflection uniform can be exhibited.
- the tip of the instrument 10 is formed in a plane in FIG. 1, but it may be formed in a hemispherical shape or the like so as to increase safety (hardness to cut) when used at high rotation. It is.
- FIG. 2 is a cross-sectional view of the working part
- (a) is a cross-sectional view taken along line AA of FIG. 1
- (b) is a cross-sectional view taken along line BB of FIG.
- the cross-sectional view along the line AA is a cross-section at the base end (about 16 mm from the front end) of the working part
- the cross-sectional view along the line BB is a cross-section at the front end of the working part (about 3 mm from the front end).
- a cross section 13a at the base end of the working unit 13 shown in FIG. 2A is formed by an arc 13a1 having a length of 40% or more of the circumscribed circle and a curve 13a2 connecting both ends of the arc 13a1.
- the arc 13a1 is a part of the circumscribed circle 13a3 of the cross section 13a.
- the curve 13a2 has a corrugated shape, and both ends of the arc 13a are connected by a curve that protrudes outward from the circumscribed circle (or R having a size that does not become a cutting edge) so as not to have a cutting function.
- the central portion is configured to leave the center of the circle and to be a concave curve (convex inside the circumscribed circle) so that the cross-sectional area becomes small.
- the area of the cross section 13a is 50 ⁇ 5% of the area of the circumscribed circle 13a.
- the cross section 13b at the tip of the working portion 13 shown in FIG. 2B includes an arc 13b1 having a length of 50% or more of the circumscribed circle, and a curve 13b2 that convexly connects both ends of the arc 13b1 to the outside of the circumscribed circle. Formed from.
- the arc 13b1 is a part of the circumscribed circle 13b3 of the cross section 13b.
- the area of the cross section 13b is 80 ⁇ 5% of the area of the circumscribed circle 13b. Therefore, the area of the cross section 13b at the base end of the working portion is 1.36 to 1.89 times the area of the cross section 13a at the tip of the working portion.
- the depth of the spiral groove 14 is deep at the proximal end side of the working unit and gradually becomes shallower toward the distal end side, it is easy to penetrate the gutta percha and transmit the rotational torque. In addition, the gutta percha can be easily eliminated.
- the gutta-percha removal device 10 rotates in the direction of the arrow in FIG. In the case of the reamer or file, the point A and the point B become the tip of the cutting edge.
- the rake angle ⁇ a at the point A and the rake angle ⁇ b at the point B are both ⁇ 50 ° or less. It is negative compared to reamers and files, and does not have a function as a cutting blade. In addition to the negative rake angle, the point A and the point B can be positively rounded. That is, the gutta-percha removing instrument 10 of the present invention has no cutting edge. Therefore, if it is a gutta percha, it can be removed by being wound in a spiral groove, but the root canal wall made of healthy dentin cannot be removed by cutting.
- the first is made of stainless steel and has good bending strength and sharpness. This is to remove the hardened gutta percha at the entrance portion of the root canal by applying rotational torque and frictional pressure, and flexibility is not so required.
- This first piece is attached to a rotary tool, and is rotated at 500 to 2000 rpm and pressed against the root canal entrance.
- the integrated lump is removed by being wound into the spiral groove 14 of the removal tool 10.
- the gutta-percha caught in the spiral groove 14 is broken by rotation.
- the broken pieces are discharged through the spiral groove 14. In this way, the gutta percha before the root canal is removed is removed.
- a gutta-percha removing device 10 made of Ni-Ti alloy and having excellent flexibility is attached to the rotary tool. Apply rotation of 500-2000 rpm and press against the part where the root canal begins to curve. The tip of the gutta-percha removing device 10 bites into the gutta-percha and advances while curving along the curvature of the root canal. When frictional heat is generated by rotational friction, the gutta percha softens and becomes an integrated lump. The integrated lump is removed by being wound into the spiral groove 14 of the removal tool 10. Alternatively, the gutta-percha caught in the spiral groove 14 is broken by rotation.
- the broken pieces are discharged through the spiral groove 14 and the root canal gutta percha is removed. Although the root canal wall is exposed at the portion where the gutta percha has disappeared, the removal tool 10 does not have a cutting blade, so that it is not cut. Further, most of the sealer used for filling the gutta percha is peeled off from the root canal wall together with the gutta percha and discharged to the outside.
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Abstract
Description
また作業部の横断面が、当該横断面に外接する円の円弧と、該円弧の両端を接続する曲線とで形成されているため、作業部の回転方向先端部のすくい角をマイナスにすることができるとともに、各横断面の面積を調整することができる。特に、基端側での横断面の面積が当該横断面に外接する円の面積に対して占める比率を、前記作業部の先端側より小さくすることが可能となる。
ガッタパーチャ除去器具と、リーマやファイルとの共通点としては、
(i) 共に長さ、太さが同程度で、先端側にテーパー状の作業部が形成されている。
(ii) 作業部には、螺旋溝が1本又は2本以上形成されている。
(iii) 共に、根管の湾曲に沿って曲がることができる可撓性を有する。
一方、ガッタパーチャ除去器具と、リーマやファイルとの相違点としては、
(i) リーマやファイルには、根管壁を切削するための切刃があるが、ガッタパーチャ除去器具には根管壁を切削するための切刃が無い。
(ii) リーマやファイルは、主に手で回転させたり、軸方向に進退させたりして使用するが、ガッタパーチャ除去器具は、原則としてハンドピースなどの回転工具に取り付け、電動等により回転させて使用する。
(iii) リーマやファイルは、作業部のテーパーが2/100程度であるが、ガッタパーチャ除去器具は10/100程度迄とテーパーが大きい。
(iv) リーマやファイルは、太さの少しずつ太くなる多数本のセットを使用して根管形成を行うが、ガッタパーチャ除去器具は、根管の湾曲度合いと根管の開口の大きさに合わせ、2~3本の器具を使用してガッタパーチャを除去する。
(v) リーマやファイルは目的が根管形成であるため、先端径は0.06~1.4mm程度であるが、ガッタパーチャ除去器具の先端径は(既に形成した根管からガッタパーチャを除去するものであるので)0.2~1.0mm程度である。
(vi) リーマやファイルの作業部の長さは16mmであるが、ガッタパーチャ除去器具の作業部の長さは、約12mm~16mmである。
(vii) 先端径が0.3~0.7mmのもので比較した場合、リーマやファイルの山数は、9~28個であるが、ガッタパーチャ除去器具の山数は6~10個である。
図1は、本発明のガッタパーチャ除去器具の正面図である。ガッタパーチャ除去器具10は、一端に回転器具に取り付ける把持部11を有し、これにシャフト部12が接続されている。シャフト部12には、テーパー状の作業部13が一体に形成されている。シャフト部12から作業部13までは、ステンレス鋼又はNi-Ti材を使用する。特に、Ni-Ti材は形状記憶合金であり、かつ、超弾性体の為、柔軟性に優れている。また、ステンレス鋼の場合は、オーステナイト系ステンレス鋼に伸線加工をしてファイバー状の結晶構造となった材料を使用することが望ましい。
また、ピッチは山幅と溝幅から構成されるが、山幅を略一定にすることで、作業部の長さ方向で撓み方を一様にすることができる。例えば、先端径が0.3mmで作業部の長さが16mmの器具10(根管の湾曲した部位で使用)では、作業部の先端から基端まで山幅を0.9mmで一定に形成するとともに、最先端のピッチを1.3mm(溝幅が0.4mm)として最基端のピッチを1.8mm(溝幅が0.9mm)としており、山数を10個としている。先端径が0.7mmで作業部の長さが12mmの器具10(根管入口の直線部分で使用)では、山幅を、作業部の最先端では0.9mmとして、最基端では1mmとしており、ピッチをそれぞれ1.65mm(溝幅が0.75mm)、2.2mm(溝幅が1.2mm)としており、山数を6個としている。山幅はこのように略一定であることが好ましく、溝の深さとのバランスを取りながら作業部の長さ全体で0~25%程度までの変化で形成することで、作業部の長さ全体で撓みを一様にする効果を発揮することができる。
器具10の先端については、図1では平面に形成しているが、半球状等に形成して、高回転で使用する際の安全性(切削しにくさ)を高めるように構成することも可能である。
まず、ガッタパーチャ除去器具を2本用意する。1本目はステンレス鋼製で、曲げ強度、尖通性のよいものを使用する。これは根管の入口部分の硬化したガッタパーチャに回転トルク、摩擦圧を与えて除去するもので、柔軟性はあまり要求されない。この1本目を回転工具に取り付け、500~2000rpmの回転を加えて根管の入口部分に押し当てる。ガッタパーチャ除去器具10の、断面積を大きくして強度を持たせた先端がガッタパーチャに接触し、回転によって摩擦熱が発生すると、ガッタパーチャが軟化して一体化した塊となる。一体化した塊を、除去器具10の螺旋溝14内に巻き込んで除去する。あるいは、螺旋溝14内に巻き込まれたガッタパーチャが、回転によって千切れる。千切れた破片は螺旋溝14を通って排出される。こうして、根管が湾曲する手前までのガッタパーチャを除去する。
11 把持部
12 シャフト部
13 作業部
13a 基端の断面
13a1 円弧
13a2 曲線
13a3 外接円
13b 先端の断面
13b1 円弧
13b2 曲線
13b3 外接円
14 螺旋溝
θa すくい角
θb すくい角
Claims (11)
- シャフト部と、該シャフト部に連なるテーパー状の作業部と、該作業部に形成された1本又は2本以上の螺旋溝とを有し、前記作業部における基端と先端の横断面をとったとき、各横断面の面積が当該横断面を外接する円の面積に対して占める比率が、前記作業部の先端の方が大きいことを特徴とするガッタパーチャ除去器具。
- 前記作業部の横断面が、当該横断面に外接する円の円弧と、該円弧の両端を接続する曲線とで形成されることを特徴とする請求項1に記載のガッタパーチャ除去器具。
- 前記作業部の回転方向先端部のすくい角が-50°以下であることを特徴とする請求項1又は2に記載のガッタパーチャ除去器具。
- (前記横断面の面積/当該横断面の外接円の面積)が、前記作業部の先端が、前記作業部の基端の1.36倍~1.89倍であることを特徴とする請求項1から3のいずれかに記載のガッタパーチャ除去器具。
- (前記横断面の面積/当該横断面の外接円の面積)が、前記作業部の先端で80±5%で、前記作業部の基端で50±5%であることを特徴とする請求項1から4のいずれかに記載のガッタパーチャ除去器具。
- 前記作業部の長手方向で山幅を略一定とすることを特徴とする請求項1から5のいずれかに記載のガッタパーチャ除去器具。
- 前記作業部の長手方向でピッチを変化させることを特徴とする請求項1から6のいずれかに記載のガッタパーチャ除去器具。
- 前記作業部のテーパーが、2/100~10/100であることを特徴とする、請求項1から7のいずれかに記載のガッタパーチャ除去器具。
- 前記作業部の回転方向先端になる縁部を丸めて形成したことを特徴とする、請求項1から8のいずれかに記載のガッタパーチャ除去器具。
- ハンドピースに接続して使用する際の回転速度が、500~2000rpmであることを特徴とする、請求項1から9のいずれかに記載のガッタパーチャ除去器具。
- 前記作業部の山数が、6~10個であることを特徴とする請求項1から10のいずれかに記載のガッタパーチャ除去器具。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10746264.0A EP2401981B1 (en) | 2009-02-27 | 2010-02-25 | Gutta-percha remover |
US13/203,817 US9333050B2 (en) | 2009-02-27 | 2010-02-25 | Gutta-percha remover |
PL10746264T PL2401981T3 (pl) | 2009-02-27 | 2010-02-25 | Narzędzie do usuwania gutaperki |
JP2011501638A JP5547711B2 (ja) | 2009-02-27 | 2010-02-25 | ガッタパーチャ除去器具 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-045859 | 2009-02-27 | ||
JP2009045859 | 2009-02-27 |
Publications (1)
Publication Number | Publication Date |
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WO2010098385A1 true WO2010098385A1 (ja) | 2010-09-02 |
Family
ID=42665589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/052964 WO2010098385A1 (ja) | 2009-02-27 | 2010-02-25 | ガッタパーチャ除去器具 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9333050B2 (ja) |
EP (1) | EP2401981B1 (ja) |
JP (1) | JP5547711B2 (ja) |
PL (1) | PL2401981T3 (ja) |
WO (1) | WO2010098385A1 (ja) |
Cited By (3)
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US20140004480A1 (en) * | 2011-03-18 | 2014-01-02 | Fkg Dentaire S.A. | Endodontic instrument for drilling |
JP2016523637A (ja) * | 2013-06-20 | 2016-08-12 | デンツプライ インターナショナル インコーポレーテッド | 歯内療法用器具(endodontic instrument) |
WO2021033776A1 (ja) * | 2019-08-22 | 2021-02-25 | マニー株式会社 | 歯科用根管治療器具 |
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US9022960B2 (en) | 2009-07-30 | 2015-05-05 | Mcneil-Ppc, Inc. | Oral care cleaning and treating device |
US20110027758A1 (en) | 2009-07-30 | 2011-02-03 | Ochs Harold D | Methods for providing beneficial effects to the oral cavity |
US9308064B2 (en) | 2010-07-26 | 2016-04-12 | Johnson & Johnson Consumer Inc. | Devices and methods for collecting and analyzing fluid samples from the oral cavity |
JP7218094B2 (ja) * | 2018-04-10 | 2023-02-06 | マニー株式会社 | 歯科用ファイル |
JP7064004B2 (ja) | 2018-08-29 | 2022-05-09 | マニー株式会社 | 歯科用ファイル |
CN108969132A (zh) * | 2018-10-11 | 2018-12-11 | 上海市东方医院 | 种植牙螺孔暂封物清除工具 |
US11622751B2 (en) | 2018-12-19 | 2023-04-11 | Johnson & Johnson Consumer Inc. | Devices and methods for collecting saliva samples from the oral cavity |
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EP2685926B1 (fr) * | 2011-03-18 | 2020-10-28 | FKG Dentaire S.A. | Instrument endodontique pour l'alesage de canaux radiculaires |
JP2016523637A (ja) * | 2013-06-20 | 2016-08-12 | デンツプライ インターナショナル インコーポレーテッド | 歯内療法用器具(endodontic instrument) |
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Also Published As
Publication number | Publication date |
---|---|
JPWO2010098385A1 (ja) | 2012-09-06 |
EP2401981A4 (en) | 2012-08-01 |
US9333050B2 (en) | 2016-05-10 |
JP5547711B2 (ja) | 2014-07-16 |
EP2401981A1 (en) | 2012-01-04 |
EP2401981B1 (en) | 2017-09-13 |
PL2401981T3 (pl) | 2018-01-31 |
US20120021376A1 (en) | 2012-01-26 |
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