JPH07227399A - Forceps for dental work and dentistry - Google Patents

Abstract

PURPOSE:To facilitate introduction and pinching of an exclusion thread and a ligature by forming integrally wing-like pinching pieces on the apexes of both acting pestles on apex sides from crossing shaft supporting part of a scissor-type forceps main body. CONSTITUTION:Wing-like pinching pieces 5 are integrally formed on the apexes of both acting pestles 4 on apex sides from crossing shaft supporting part 3 of a scissor-type forceps main body 1 provided with a lock mechanism 2 on its base part. In each wing-like pinching piece 5, the outer periphery 6 of the head end edge is formed into a curved shape 7 and a thread guiding channel 8 is formed on both sides of the lower edge and, in addition, on the outer lower edge of the thread guiding channel 8 of one of the wing-like pinching pieces 5, a thread release stopper 9 standing in the lower edge thickness direction of another wing-like pinching piece 5 is formed by bending. In addition, both ends of a twofold ligature passing through below a contact point between teeth are pinched by means of the ing-like pinching pieces 5 and under a condition where the ligature guided between both thread release stoppers 9, it is pinched by means of the wing-like pinching pieces 5 and 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、型取り前工程として
の歯肉の圧排作業や、歯周疾患の治療に先立って歯牙の
動揺を停止させることを目的として行なわれる暫間固定
法（バルカン氏法）の実施などの際に用いられる歯工・
歯科用の鉗子に関する。BACKGROUND OF THE INVENTION The present invention relates to a temporary fixing method (Vulcan) for the purpose of stopping swaying of teeth prior to gingival expulsion work as a pre-molding process and treatment of periodontal disease. The dentist used when carrying out the
The present invention relates to dental forceps.

【０００２】[0002]

【従来技術】印象型取りの際、歯肉溝が隙いていると組
織内部からの浸出液が、注入した半流動性の印象材料と
混ざり合って材質変化をもたらし、また鮮明度を失うと
いう不都合を生じるが、これを防ぐために歯肉の圧排が
施される。ところで、これまでに歯肉の圧排作業は、イ
ンストルメントと指先を使って一般に次の工程を経て行
われる。 （イ）形成歯の周囲に圧排糸をル−プ状に巻き付けたら
その両端を親指と人差し指でピ−ンと張るように保持す
る。 （ロ）インスツルメントを使用して形成歯の近心の歯肉
溝から圧排糸の挿入を始め、次いで遠心の歯肉溝に軽く
挿入する。 （ハ）（必要な場合はもう一本のインストルメントで圧
入済みの圧排糸を押えつつ）さらにインストルメントで
圧入操作を進めながら漸次近心方向に戻り、最終的に圧
排糸を歯肉溝の中に圧入する。 （ニ）そして近心の歯肉溝からはみ出している余分の圧
排糸端部をできるだけ歯間乳頭に近いところで切り取
る。 （ホ）最後に遠心の歯肉溝からはみ出している余分の圧
排糸端部（遠心端）を頬側面に沿って（即ち手前の残余
歯肉溝に）挿入し、近心の隣接面の部分で重ね合わせ、
最後端を僅かに残して他は全て歯肉溝内に挿入して完了
する。2. Description of the Related Art In impression making, when the gingival sulcus is open, the exudate from the inside of the tissue mixes with the injected semi-fluid impression material to cause a material change and loses the sharpness. However, to prevent this, the gingiva is excluded. By the way, up to now, the gingiva excluding work is generally performed through the following steps using an instrument and a fingertip. (A) When the exclusion yarn is wrapped around the formed tooth in a loop shape, both ends thereof are held so as to be stretched with a thumb and an index finger. (B) Using an instrument, start insertion of the exclusion yarn from the mesial gingival sulcus of the formed tooth, and then lightly insert into the centrifugal gingival sulcus. (C) (While holding the press-fitting thread that has been press-fitted with another instrument, if necessary), the instrument gradually returns to the mesial direction while the press-fitting operation is further performed with the instrument, and finally the press-fitting thread is placed in the gingival sulcus. Press into. (D) Then, cut off the extra repulsion thread end protruding from the mesial gingival sulcus as close to the interdental papilla as possible. (E) Finally, insert the extra expulsion yarn end (distal end) protruding from the centrifugal gingival sulcus along the buccal side (that is, in the residual gingival sulcus in front) and overlap at the adjacent mesial surface. Together,
All but the last end is inserted into the gingival sulcus and completed.

【０００３】しかしながらこの手法においては、インス
トルメントの操作に、一方向への傾斜、強弱の力加減、
正確な方向性、さらにそれらの確認、場合によって二本
のインストルメントの併用の必要など、かなりの熟練を
要求され、これらを術者が少しでも誤ると、作業中に圧
排糸が離脱したりはね上がり、圧排糸がフィニッシュ・
ラインの位置にとどまらない結果となり、或いは逆に深
く挿入し過ぎて組織に外傷を与え、歯肉痛を誘発し、後
に装着される鋳造冠の寿命を短縮することにもなりかね
ない。However, according to this method, the operation of the instrument is inclined in one direction, and the strength of the strength is increased or decreased.
Accurate direction, further confirmation of them, and in some cases the need to use two instruments together requires considerable skill, and if the operator makes a slight mistake, the expulsion yarn will detach or jump up during work. , The discharge yarn finishes
The result is that it does not stay at the line position, or conversely, it is inserted too deeply, causing trauma to the tissue, causing gum pain, and shortening the life of the cast crown to be mounted later.

【０００４】他方、歯周疾患の治療に先立って歯牙の動
揺を停止させることを目的として、暫間固定法（バルカ
ン氏法）が施される。そしてこの方法の最終段階におい
ては、ステンレス製の結紮線の両端を合わせてねじる工
程があり、その道具として一般にホ−のプライヤ−が使
用され、特別に考案されたものとしては実開昭５９−１
１４１０８の「結紮用鉗子」がある。しかしながら、前
者のホ−のプライヤ−においては、結紮線の挟持が確実
に行なわれず作業中に結紮線が離脱しやすい、回転作業
も円滑動作性に欠けるなどの難点があり、後者の「結紮
用鉗子」は、先端を挟持方向と直交する屈曲部に形成し
た特殊形態のものであり、その先端の挟持圧、ねじり力
はその屈曲形成によりかえって弱まり、その他、屈曲部
背側に滑り止めを施すなどの工夫を凝らしているもの
の、鉗子そのものの回転動作に円滑性を欠いていること
前者のプライヤ−と同様であり、さらに円みを欠くその
先端形状は作業中に歯肉等を傷める虞がある。そして上
記のような事情のもとに実施される歯肉の圧排作業や暫
間固定法（バルカン氏法）は、今尚熟練を要求され、ま
た作業効率が極めて悪く、何らかの改善が望まれる実情
にあった。On the other hand, prior to the treatment of periodontal disease, a temporary fixation method (Vulcan method) is applied for the purpose of stopping the swaying of teeth. At the final stage of this method, there is a step of twisting together both ends of a stainless ligature wire, and a tool of hoe is generally used as a tool for it. 1
There are 14108 “ligature forceps”. However, in the former pliers of the hoe, there are drawbacks such that the ligature wire is not reliably clamped and the ligature wire is easily detached during the work, and the rotating work lacks smooth operability. The "forceps" has a special shape in which the tip is formed in a bent portion orthogonal to the holding direction. The holding pressure and the twisting force of the tip are rather weakened by the bent formation, and in addition, slip prevention is performed on the back side of the bent portion. However, the forceps themselves lack smoothness in rotation, similar to the former pliers, and the shape of the tip, which lacks a roundness, may damage the gums during work. . In addition, the gingival excluding work and the temporary fixation method (Vulcan method) performed under the above circumstances still require skill, work efficiency is extremely poor, and some improvement is desired. there were.

【０００５】[0005]

【発明が解決しようとする課題】本発明は、従来のこの
ような事情を踏まえて、圧排糸や結紮線を確実に誘導、
挟持し、安定状態で回転動作その他の作業が促進され、
また作業中周囲組織の損傷を防止し、延いてはこの種作
業の著しい効率性をもたらす歯工・歯科用鉗子を提供し
ようとするものである。SUMMARY OF THE INVENTION In view of the above-mentioned conventional circumstances, the present invention reliably guides the exclusion yarn and the ligature wire,
It is clamped, and rotation work and other work are promoted in a stable state,
It is also an object of the present invention to provide a dentistry / dental forceps that prevents damage to surrounding tissues during work and, in turn, brings about remarkable efficiency of this kind of work.

【０００６】[0006]

【課題を解決するための手段】上記目的を達成するた
め、本発明は、基部にロック機構２を介在させた鋏型鉗
子であって、その鋏型鉗子本体１の交差枢支部３より先
端側の両作用杆部４の先端に翼状挟圧片５を一体的に形
成する。この翼状挟圧片５は、その下縁両側に結紮線な
いし圧排糸（以下「線糸」という）の案内溝８を設け
る。そしてさらに一方の翼状挟圧片５の前記線糸案内溝
８の外側下縁に他方の翼状挟圧片５の下縁厚み方向に起
立する線糸脱離ストッパ−９を屈曲形成して構成される
歯工・歯科用鉗子である。また、上記構成中の翼状挟圧
片５の頭端縁外周６を湾曲状７に形成した歯工・歯科用
鉗子である。さらに、上記各構成中、鋏型鉗子本体１の
ロック状態において交差枢支部３付近が軸方向に円胴状
３ａを形成するように、交差枢支部３の円周方向に膨出
部３ｂを回設した歯工・歯科用鉗子である。In order to achieve the above object, the present invention is a scissor type forceps having a locking mechanism 2 interposed at a base portion thereof, and a tip side of a scissor type forceps body 1 from a cross pivotal support portion 3. A wing-shaped pinching piece 5 is integrally formed at the tip of each of the action rods 4. This wing-shaped pinching piece 5 is provided with a guide groove 8 for a ligature wire or an expulsion thread (hereinafter referred to as "wire thread") on both sides of its lower edge. Further, a line thread detachment stopper-9 standing upright in the thickness direction of the lower edge of the other wing-shaped pinching piece 5 is bent and formed on the outer lower edge of the line thread guide groove 8 of the one wing-shaped pinching piece 5. These are dentistry and dental forceps. Further, it is a dentistry / dental forceps in which the head end edge outer circumference 6 of the wing-shaped pressing piece 5 in the above-mentioned configuration is formed in a curved shape 7. Furthermore, in each of the above-described configurations, when the scissors-type forceps body 1 is in the locked state, the bulging portion 3b is rotated in the circumferential direction of the cross pivotal support portion 3 so that the vicinity of the cross pivotal support portion 3 forms the cylindrical shape 3a in the axial direction. These are the dentistry and dental forceps that were installed.

【０００７】[0007]

【実施例】基部にロック機構２を介在させた鋏型鉗子で
あって、その鋏型鉗子本体１のロック状態において交差
枢支部３付近が軸方向に円胴状３ａを形成するように交
差枢支部３の円周方向に膨出部３ｂを回設してある。そ
して前記交差枢支部３より先端側の両作用杆部４の先端
に翼状挟圧片５を一体的に形成し、その翼状挟圧片５は
蒲鉾型に似てその頭端縁外周６を湾曲状７に形成すると
ともに下縁両側にＵ字型の線糸案内溝８を設ける。そし
てさらに一方の翼状挟圧片５の前記線糸案内溝８の外側
下縁に他方の翼状挟圧片５の下縁厚み方向に起立する線
糸脱離ストッパ−９を屈曲形成して、歯工・歯科用鉗子
を構成する。EXAMPLE A scissors-type forceps having a locking mechanism 2 interposed at a base portion thereof. When the scissors-type forceps main body 1 is in a locked state, the cross pivotal support part 3 is formed so as to form a cylindrical shape 3a in the axial direction. A bulging portion 3b is provided in the circumferential direction of the support portion 3. Then, a wing-shaped pressing piece 5 is integrally formed at the tip of each of the working rods 4 on the tip side of the cross pivotal supporting portion 3, and the wing-shaped pressing piece 5 is curved like a kamaboko-shaped outer periphery 6 of its head end edge. The U-shaped wire thread guide groove 8 is formed on both sides of the lower edge while being formed into the shape 7. Further, a line thread detachment stopper-9 that stands up in the thickness direction of the lower edge of the other wing-shaped pinching piece 5 is bent and formed on the outer lower edge of the line thread guide groove 8 of the one wing-shaped pinching piece 5 to form a tooth. Compose engineering and dental forceps.

【０００８】[0008]

【作用並びに効果】今、本発明の歯工・歯科用鉗子を使
用して、歯肉の圧排を行う場合を工程順に説明すると、 （イ）所定長さに切断した圧排糸を二つ折りして、親指
と人差し指でその折返し部を、中指と薬指で両端付近を
夫々摘んだうえ、その中間部を一方の翼状挟圧片５の下
縁両側の線糸案内溝８に引掛けて「く」の字型に突張っ
た状態で他方の翼状挟圧片５で挟持する（図３）。鋏型
鉗子本体１はロック状態。このとき圧排糸は、線糸案内
溝８に円滑に案内され、両翼状挟圧片５、５に確実且つ
強力に挟持され、両翼状挟圧片５、５の上方にル−プを
形成する。なお線糸脱離ストッパ−９は、以後の作業中
に圧排糸が脱離しないための安全弁的機能を果す。 （ロ）次いで形成歯の周囲にル−プ状圧排糸を巻き付け
たら鋏型鉗子本体１を軽く引いた状態で、その円胴状３
ａを形成した交差枢支部３（膨出部３ｂ）を親指と人差
し指で摘んで鋏型鉗子本体１を一方向に回転させつつ他
方の手でインストルメントを使用して形成歯の近心の歯
肉溝から遠心方向へ圧排糸の挿入を進める（図４、図
５）。即ちこれによりル−プ状圧排糸は漸次ねじられ
て、形成歯を締め付ける如く突張り状態でインストルメ
ントにより歯肉溝へ圧入されていくから、作業中に圧排
糸が離脱したりはね上がる虞がなく、圧排糸はフィニッ
シュ・ラインの位置に安定して留り、さらに深く挿入し
過ぎて組織に外傷を与えることもない。作業中の見通し
（視野）も極めて良好である。インストルメントも一本
使用で足りる。鋏型鉗子本体１の回転動作は、交差枢支
部３が円胴状に膨出しているので、円滑に操作される。
また鋏型鉗子本体１の回転動作において、翼状挟圧片５
は蒲鉾型に似てその頭端縁外周６を湾曲状７に形成して
あるので、周囲組織を傷めることを防止する。 （ハ）ル−プ状圧排糸の圧入操作を終了したら、ねじり
部分を切断し（これによってねじりは解ける）、歯肉溝
からはみ出している端部を頬側面に沿って（即ち手前の
残余歯肉溝に）挿入し、近心の隣接面の部分で重ね合わ
せ、最後端を僅かに残して他は全て歯肉溝内に挿入して
完了する（図６）。ACTION AND EFFECT Now, description will be given in order of steps of performing gingival pressure excluding using the dentistry / dental forceps of the present invention. (A) Folding an excluding yarn cut into a predetermined length into two, Pinch the folded-back portion with the thumb and the index finger, and both ends with the middle finger and the ring finger respectively, and hook the middle portion on the line thread guide groove 8 on both lower edges of the one wing-shaped pinching piece 5 It is clamped by the other wing-shaped clamping piece 5 in a state of protruding in a V shape (Fig. 3). The scissors type forceps body 1 is in a locked state. At this time, the unloading yarn is smoothly guided to the line yarn guide groove 8 and reliably and strongly sandwiched by the wing-shaped pinching pieces 5, 5 to form a loop above the wing-shaped pinching pieces 5, 5. . The wire thread detachment stopper-9 functions as a safety valve to prevent the escape thread from being detached during the subsequent work. (B) Next, when the loop-shaped retraction thread is wound around the formed tooth, the scissors-type forceps body 1 is gently pulled, and the cylindrical shape 3
Gentling the mesial gingiva of the formed tooth using the instrument with the other hand while pinching the cross pivotal support portion 3 (bulging portion 3b) formed with a with the thumb and forefinger and rotating the scissor-type forceps body 1 in one direction. The insertion of the exclusion yarn is advanced from the groove in the centrifugal direction (FIGS. 4 and 5). That is, as a result, the loop-shaped expulsion yarn is gradually twisted and pressed into the gingival sulcus by the instrument in a tensioned state so as to tighten the forming tooth, so that there is no risk of the expulsion yarn coming off or popping up during the work. The retraction thread remains stable at the finish line and does not insert too deeply to cause tissue trauma. The visibility (field of view) during work is also very good. One instrument is enough. The scissors-type forceps main body 1 is rotated smoothly because the cross pivot support 3 bulges like a cylinder.
In addition, when the scissors-type forceps body 1 is rotated, the wing-shaped clamping piece 5
Since the head end edge outer circumference 6 is formed in a curved shape 7 similar to a kamaboko shape, it prevents damage to surrounding tissues. (C) When the press-fitting operation of the loop-shaped expulsion yarn is completed, the twisted portion is cut (the twist is released by this), and the end protruding from the gingival sulcus is along the cheek lateral surface (that is, the residual gingival sulcus on the front side). ), The mesial abutment surfaces are superposed, and the last end is slightly left, and the others are completely inserted into the gingival sulcus (FIG. 6).

【０００９】次に本発明の歯工・歯科用鉗子を使用し
て、暫間固定法（バルカン氏法）を実施する場合を工程
順に説明すると、 （イ）歯間部接触点下を通した二つ折りの結紮線の両端
を、ロックを解除した鋏型鉗子本体１の先端の翼状挟圧
片５、５にて挟持する（図７）。この際、二条を成す結
紮線は両側の線糸脱離ストッパ−９間に誘導された状態
（さらに線糸案内溝８に案内されることもある）におい
て、両翼状挟圧片５、５に確実且つ強力に挟持される。
なお線糸脱離ストッパ−９が以後の作業中の結紮線の脱
離に対する安全弁的役割を果すこと、先の歯肉の圧排と
同様である。 （ロ）次いで鋏型鉗子本体１を軽く引いた状態で、その
円胴状３ａを形成した交差枢支部３（膨出部３ｂ）を親
指と人差し指で摘んで鋏型鉗子本体１を一方向に回転さ
せつつねじる（図８）。鋏型鉗子本体１の回転動作は、
交差枢支部３が円胴状に膨出しているので、円滑に操作
される。 （ハ）金冠鋏で、ねじった結紮線を約５ｍｍ残して切
り、最後にその断端を歯冠側に曲げて歯間部に圧入す
る。上記作業中、翼状挟圧片５は蒲鉾型に似てその頭端
縁外周６を湾曲状７に形成してあるので、周囲組織を傷
めることなく安心して作業が行える。Next, the case of carrying out the temporary fixing method (Vulcan method) using the dentistry / dental forceps of the present invention will be described in the order of steps. Both ends of the two-fold ligature wire are clamped by the wing-shaped clamping pieces 5, 5 at the tip of the scissors-type forceps body 1 with the lock released (FIG. 7). At this time, the two ligature wires are guided to the wing-shaped pinching pieces 5 and 5 in a state of being guided between the line thread detachment stoppers 9 on both sides (may be further guided by the line thread guide groove 8). It is securely and strongly clamped.
The wire thread detachment stopper-9 plays a role of a safety valve for detachment of the ligature wire during the subsequent work, which is the same as the above-mentioned gingival pressure exclusion. (B) Next, with the scissors-type forceps body 1 lightly pulled, the cross pivotal support portion 3 (bulging portion 3b) having the cylindrical shape 3a formed therein is pinched with the thumb and forefinger to move the scissors-type forceps body 1 in one direction. Twist while rotating (Fig. 8). The rotation operation of the scissors type forceps body 1 is
Since the cross pivot support portion 3 bulges like a cylinder, it can be operated smoothly. (C) With gold crown scissors, a twisted ligation line is cut while leaving about 5 mm, and finally the stump is bent toward the crown side and press-fitted into the interdental part. During the above-mentioned work, the wing-shaped pressing piece 5 is formed in a curved shape 7 on the outer circumference 6 of the head end edge thereof, similar to a kamaboko shape, so that the work can be carried out with peace of mind without damaging the surrounding tissue.

【００１０】以上によって明らかなように、本発明に係
る歯工・歯科用鉗子をは、歯肉の圧排や暫間固定法（バ
ルカン氏法）の施術に当り、圧排糸や結紮線を確実に誘
導、挟持し、安定状態で回転動作その他の作業が円滑促
進され、また作業中周囲組織の損傷が防止されて安心作
業が約束され、延いてはこの種作業の著しい効率性をも
たらすものとして、まことに有利なものである。As is clear from the above, the dentistry / dental forceps according to the present invention reliably guides the evacuating thread and the ligature wire when gingiva is evacuated and the temporary fixation method (Vulcan method) is performed. , Pinching, smooth rotation operation in a stable state and other work are smoothly promoted, damage of surrounding tissues is prevented during work, and safe work is promised, which in turn brings remarkable efficiency of this kind of work. It is an advantage.

【図面の簡単な説明】[Brief description of drawings]

【図１】ロック解除状態の斜視図FIG. 1 is a perspective view of an unlocked state

【図２】ロック状態の斜視図FIG. 2 is a perspective view of a locked state.

【図３】圧排糸の引掛け状態を示す斜視図FIG. 3 is a perspective view showing a hooked state of the discharge yarn.

【図４】ル−プ状圧排糸を歯に巻付けインストルメント
で圧入開始状態の斜視図FIG. 4 is a perspective view of a state in which a loop-shaped expulsion yarn is wound around a tooth and a press-fitting is started by an instrument

【図５】鋏型鉗子本体を回転させつつ近心の歯肉溝から
遠心方向へ圧排糸の挿入を進めている状態の斜視図FIG. 5 is a perspective view showing a state in which the insertion of the pressure-removing thread is proceeding in the centrifugal direction from the mesial gingival sulcus while rotating the scissors-type forceps body.

【図６】ねじり部分を切断し、歯肉溝からはみ出してい
る断端部を近心の隣接面の部分で重ね合わせ最後端を僅
かに残して挿入を完了した状態の斜視図FIG. 6 is a perspective view showing a state in which the twisted portion is cut, and the stump portion protruding from the gingival sulcus is overlapped with a portion of the mesial adjoining surface and the insertion is completed with the rear end slightly left.

【図７】歯間部接触点下を通した二条の結紮線の両端を
翼状挟圧片にて挟持した状態の斜視図FIG. 7 is a perspective view showing a state in which both ends of the two ligature wires passing under the contact point between the teeth are clamped by wing-shaped clamping pieces.

【図８】鋏型鉗子本体１を回転させて結紮線をねじって
いる状態の斜視図FIG. 8 is a perspective view of a state in which the scissors-type forceps body 1 is rotated to twist the ligature wire.

【図９】結紮線のねじり部を残し切りして、その断端を
歯冠側に曲げて歯間部に圧入した状態の斜視図FIG. 9 is a perspective view of a state in which the twisted portion of the ligature wire is cut off, the stump is bent toward the crown side and press-fitted into the interdental part.

【符号の説明】 １ 鋏型鉗子本体 ２ ロック機構 ３ 交差枢支部 ３ａ 円胴状 ３ｂ 膨出部 ４ 作用杆部 ５ 翼状挟圧片 ６ 翼状挟圧片の頭端縁外周 ７ 湾曲状 ８ 線糸案内溝 ９ 線糸脱離ストッパ−[Explanation of Codes] 1 Scissors-type forceps main body 2 Lock mechanism 3 Crossing pivotal support portion 3a Cylinder-shaped 3b Swelling portion 4 Working rod portion 5 Wing-like clamping piece 6 Wing-like clamping piece outer circumference 7 Curved line 8 Guide groove 9 Thread release stopper-

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 基部にロック機構（２）を介在させた鋏
型鉗子本体（１）の交差枢支部（３）より先端側の両作
用杆部（４）の先端に翼状挟圧片（５）を一体的に形成
し、その翼状挟圧片（５）の下縁両側に線糸案内溝
（８）を設け、さらに一方の翼状挟圧片（５）の前記線
糸案内溝（８）の外側下縁に他方の翼状挟圧片（５）の
下縁厚み方向に起立する線糸脱離ストッパ−（９）を屈
曲形成した歯工・歯科用鉗子。1. A wing-shaped pinching piece (5) at the tip of both working rods (4) on the tip side of a cross pivot support (3) of a scissors-type forceps body (1) having a locking mechanism (2) interposed at a base. ) Are integrally formed, and line thread guide grooves (8) are provided on both sides of the lower edge of the blade-shaped pinching piece (5), and the line thread guide groove (8) of one of the blade-shaped pinching pieces (5) is further provided. A dental dentistry / dental forceps in which a line thread detachment stopper (9) which is erected in the thickness direction of the lower edge of the other wing-shaped pinching piece (5) is bent and formed on the outer lower edge of the. 【請求項２】 翼状挟圧片（５）の頭端縁外周（６）を
湾曲状７に形成した請求項１の歯工・歯科用鉗子。2. The dentistry / dental forceps according to claim 1, wherein the wing-shaped pressing piece (5) has a curved outer peripheral edge (6). 【請求項３】 鋏型鉗子本体（１）のロック状態におい
て交差枢支部（３）付近が軸方向に円胴状（３ａ）を形
成するように、交差枢支部（３）の円周方向に膨出部
（３ｂ）を回設した歯工・歯科用鉗子。3. When the scissors-type forceps main body (1) is in a locked state, the vicinity of the cross pivot support (3) forms a cylindrical shape (3a) in the axial direction, so that the cross pivot support (3) extends in the circumferential direction. Dentist / dental forceps having a bulging portion (3b).