WO2011051584A1 - Instrument for treating root canals - Google Patents
Instrument for treating root canals Download PDFInfo
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- WO2011051584A1 WO2011051584A1 PCT/FR2010/051901 FR2010051901W WO2011051584A1 WO 2011051584 A1 WO2011051584 A1 WO 2011051584A1 FR 2010051901 W FR2010051901 W FR 2010051901W WO 2011051584 A1 WO2011051584 A1 WO 2011051584A1
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- instrument
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- 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 invention relates to a root canal treatment instrument comprising an end section and an active zone comprising a heel adjacent to the end section and a tip, the active zone having a generally inverted cone shape, a diameter of a section of the active zone in the vicinity of the tip being larger than a diameter of a section of the active zone in the vicinity of the heel.
- Treatment of a tissue-damaged root consists of extracting the pulp from the dental canal, shaping and cleaning the canal, and sealing the cleaned canal with gutta percha, pastes and / or sealants.
- the shaping is achieved by successive and sequenced passages of reamer-type channel instruments having different geometric characteristics (tip diameter, taper, not helical cutting lips and shape of the section). Shaping generates a more or less curved, conical channel with the smallest diameter at the apex and the largest diameter at the pulp floor. This channel and machined is then cleaned as best as possible, which is very difficult given its size and morphology.
- the reamers commonly used by practitioners have a substantially conical shape, with a tip diameter smaller than the bead diameter.
- the flute and cutting edge shapes of the reamers are optimized to allow for the most efficient evacuation of pulp waste to the outside.
- the reamers do not allow effective cleaning because of the size of the channel and its morphology.
- the obturation then consists in correctly filling the channel, in particular at the apical zone to create a mechanical sealing zone, without exceeding the apex. Indeed, an apical overtaking of the closure product would cause more or less long term clinical complications.
- One of the methods for performing this shutter operation consists of successively inserting gutta-percha cones in the channel and then pushing them into the channel using a condenser.
- Condensers are instruments that are used manually or in rotation to exert a thrust force on the gutta-percha cone.
- the obturation consists in compacting a master cone of gutta percha adapted to the apical diameter resulting from the shaping of the channel, then of one or two complementary cones.
- endodontic files are on the one hand that they have a cutting power over their entire active zone including the end of the tip, on the other hand that they are conical, the diameter of the tip being more small as the diameter of the heel. There is therefore a risk of widening the apical diameter when measuring its diameter and therefore to choose a tip of gutta percha whose diameter will be smaller than the actual diameter of the apex.
- the practitioner inserted a conical file having a taper of 2% and a diameter of 0.2 mm at the tip.
- the invention proposes a novel root instrument capable of overcoming the disadvantages of the existing instruments described above.
- the invention provides a root canal treatment instrument, comprising an end section and an active zone comprising a heel adjacent to the end section and a tip, the active zone having a generally inverted cone shape, an a diameter of a section of the active zone in the vicinity of the tip being greater than a diameter of a section of the active zone in the vicinity of the heel, the instrument being characterized in that the active zone has a smooth outer surface .
- smooth surface is meant here a surface having no flute, no sharp edge or blunt, no roughness, no bump, no hollow, no relief likely to rub or cut the wall of the channel.
- the surface of the active zone is such that any intersection between the surface of the active zone and a plane perpendicular to a longitudinal axis of the active area is a circle.
- the lack of cutting power of the active zone means that the instrument can be used to measure the apical diameter without the risk of enlarging it, even if the tip goes beyond the apex. And the inverted conicity of the active zone prevents any jamming in the channel, this is what is shown in FIG.
- the end portion of the instrument may include a handle to facilitate its grip.
- the handle is adapted for manual gripping, for example for measuring the apical diameter.
- the handle comprises means for connecting to a mandrel driven by a vibrating device, for example for cleaning the channel.
- the instrument according to the invention can thus be used with a standard vibration device.
- the active zone may have a conical section shape with fixed or variable conicity, continuously or in sections, with an apex angle of the order of 0.1% to 0.5%.
- an active zone in the form of a cone section with fixed taper of the order of 0.3% can be achieved.
- An assembly comprising a plurality of instruments corresponding to different tip diameters may be used, for example sets of instruments whose tip diameter varies in increments of 0.05 mm: 0.20, 0.25, 0.30, 0.35, 0.40, 0.45 mm.
- the choice of an instrument with a particular diameter at the tip is then at the discretion of the practitioner, according to the needs.
- the instrument according to the invention can be used for measuring an apical diameter of a channel after forming said channel using reamers.
- the method for measuring an apical diameter of a root canal comprises a step of inserting an instrument according to the invention as described above.
- the step insertion is repeated successively with instruments of increasing diameters at the tip, until one of the instruments comes into abutment in the bottom of the channel.
- the apical diameter measured corresponds in this case to the diameter of the last instrument inserted.
- the instrument according to the invention can also be used for cleaning the shaped channel, either before or after measuring the apical diameter.
- the instrument is vibrated by a vibrating device, in the channel advantageously soaked with a fluid.
- the vibrations cause a phenomenon of cavitation of the fluid which will improve the cleaning efficiency.
- the method of cleaning a root canal comprises a step of vibrating, in the channel to be cleaned, an instrument according to the invention as described above. Because of the inverted conicity and the smooth outer surface of the active zone, when the instrument is vibrated, the instrument is particularly effective for cleaning a channel soaked in a fluid, such as example a solution of sodium hypochlorite.
- FIG. 1 already described, shows the use of a known endodontic file for measuring an apical diameter
- FIG. 2 shows diagrams of an instrument according to the invention
- FIG. 3 shows the use of an instrument according to the invention for measuring an apical diameter
- Figure 4 shows the use of an instrument according to the invention for cleaning a root canal.
- the instrument according to the invention comprises an active zone 1 comprising a tip of diameter OD and a heel diameter DX.
- the heel is connected to an end section 3.
- the active zone has a general outer shape of inverted cone, with a diameter at the tip greater than the diameter at the heel of the active zone.
- OD may be between 0.20 and 0.5 mm.
- the taper of the active zone is of the order of 0.3%.
- the outer surface of the active zone is perfectly smooth, it has no sharp or blunt edges, and therefore no cutting power.
- the tip of the active zone has a rounded end to facilitate guiding the instrument in the channel.
- the instrument can be made of stainless steel, Nickel Titanium alloy or composite material.
- the end portion 3 comprises a handle 2 adapted for connection to a vibrating device. Inserted in the channel soaked with NaOCI sodium hypochlorite and driven in vibrations, the end section 3 does not move but the active zone of the instrument acts like a whip and causes a cavitation phenomenon of the fluid in the channel (Figure 4), which brings up the debris towards the heel of the instrument.
- the handle 2 can of course also be used for manual gripping of the instrument. Manually inserted into the canal, the instrument can not damage the apical diameter or the part beyond the apex, even if the tip of the instrument goes beyond the apex ( Figure 3).
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Abstract
The invention relates to an instrument for treating root canals, said instrument including an end section (3) and an operative area (1) that includes a talon, adjacent to the end section, and a tip, the operative area having the general shape of an upside-down cone, a diameter of a section of the operative area near the tip being greater than a diameter of a section of the operative area near the talon, the instrument being characterized in that the operative area has a smooth outer surface. The invention can be used for cleaning canals and measuring the apical diameter.
Description
INSTRUMENT DE TRAITEMENT ES CANAUX RADICULAIRES RADICULAR CANCER TREATMENT INSTRUMENT
Domaine technique et état de l'art Technical field and state of the art
L'invention concerne un instrument de traitement des canaux radiculaires, comprenant un tronçon d'extrémité et une zone active comprenant un talon adjacent au tronçon d'extrémité et une pointe, la zone active présentant une forme générale de cône inversé, un diamètre d'une section de la zone active au voisinage de la pointe étant plus grand qu'un diamètre d'une section de la zone active au voisinage du talon. The invention relates to a root canal treatment instrument comprising an end section and an active zone comprising a heel adjacent to the end section and a tip, the active zone having a generally inverted cone shape, a diameter of a section of the active zone in the vicinity of the tip being larger than a diameter of a section of the active zone in the vicinity of the heel.
Le traitement d'une racine dont les tissus sont endommagés consiste à extraire la pulpe du canal dentaire, mettre en forme et nettoyer le canal, et obturer le canal nettoyé avec de la gutta percha, des pâtes et/ ou des ciments de scellement. La mise en forme est obtenue par des passages successifs et ordonnancés d'instruments à canaux de type alésoirs ayant des caractéristiques géométriques différentes (diamètre de pointe, conicité, pas des lèvres hélicoïdales de coupe et forme de la section). La mise en forme génère un canal plus ou moins courbé, conique, dont le diamètre le plus petit se situe au niveau de l'apex et le diamètre le plus grand au niveau du plancher pulpaire. Ce canal ainsi usiné est ensuite nettoyé le mieux possible, ce qui est très difficile compte tenu de sa dimension et de sa morphologie. Treatment of a tissue-damaged root consists of extracting the pulp from the dental canal, shaping and cleaning the canal, and sealing the cleaned canal with gutta percha, pastes and / or sealants. The shaping is achieved by successive and sequenced passages of reamer-type channel instruments having different geometric characteristics (tip diameter, taper, not helical cutting lips and shape of the section). Shaping generates a more or less curved, conical channel with the smallest diameter at the apex and the largest diameter at the pulp floor. This channel and machined is then cleaned as best as possible, which is very difficult given its size and morphology.
Les alésoirs communément utilisés par les praticiens ont une forme sensiblement conique, avec un diamètre de pointe inférieur au diamètre de talon. Les formes des goujures et des arêtes de coupe des alésoirs sont optimisées pour permettre une évacuation aussi efficace que possible des déchets pulpaires vers l'extérieur.
Toutefois, les alésoirs ne permettent pas un nettoyage efficace du fait de la dimension du canal et de sa morphologie. The reamers commonly used by practitioners have a substantially conical shape, with a tip diameter smaller than the bead diameter. The flute and cutting edge shapes of the reamers are optimized to allow for the most efficient evacuation of pulp waste to the outside. However, the reamers do not allow effective cleaning because of the size of the channel and its morphology.
L'obturation consiste ensuite à remplir correctement le canal, en particulier au niveau de la zone apicale pour créer une zone d'étanchéité mécanique, sans dépasser l'apex. En effet, un dépassement apical du produit d'obturation provoquerait à plus ou moins long terme des complications cliniques. The obturation then consists in correctly filling the channel, in particular at the apical zone to create a mechanical sealing zone, without exceeding the apex. Indeed, an apical overtaking of the closure product would cause more or less long term clinical complications.
Une des méthodes pour réaliser cette opération d'obturation consiste à insérer successivement des cônes de gutta-percha dans le canal puis à les pousser dans le canal à l'aide d'un condenseur. Les condenseurs sont des instruments utilisés manuellement ou en rotation qui permettent d'exercer une force de poussée sur le cône de gutta-percha. L'obturation consiste à réaliser le compactage d'un maître cône de gutta percha adapté au diamètre apical résultant de la mise en forme du canal, puis d'un ou de deux cônes complémentaires. One of the methods for performing this shutter operation consists of successively inserting gutta-percha cones in the channel and then pushing them into the channel using a condenser. Condensers are instruments that are used manually or in rotation to exert a thrust force on the gutta-percha cone. The obturation consists in compacting a master cone of gutta percha adapted to the apical diameter resulting from the shaping of the channel, then of one or two complementary cones.
Cette technique d'obturation nécessite avant tout une bonne connaissance de la forme générée par la mise en forme canalaire, en particulier du diamètre du canal au niveau de l'apex, qui permettra le choix judicieux de la pointe de gutta-percha ayant le diamètre le mieux adapté. Aujourd'hui, pour mesurer le diamètre apical, les praticiens utilisent des limes endodontiques classiques. This sealing technique requires, above all, a good knowledge of the shape generated by the canal shaping, in particular the diameter of the canal at the apex, which will allow the judicious choice of the tip of gutta-percha having the diameter. the best suited. Today, to measure the apical diameter, practitioners use conventional endodontic files.
L'inconvénient des limes endodontiques est d'une part qu'elles ont un pouvoir de coupe sur toute leur zone active y compris l'extrémité de la pointe, d'autre part qu'elles sont coniques, le diamètre de la pointe étant plus petit que le diamètre du talon. Il y a donc un risque d'élargir le diamètre apical lors de la mesure de son diamètre et donc de choisir une pointe de gutta percha dont le diamètre sera plus petit que le diamètre réel de l'apex. Dans l'exemple représenté sur la
figure 1 , pour mesurer le diamètre apical, le praticien a inséré une lime conique ayant une conicité de 2% et un diamètre de 0.2 mm à la pointe. Si le praticien va au delà de l'apex, par exemple de 1 mm, il va agrandir le diamètre de l'apex de 0.02 mm, soit un diamètre réel de l'apex de 0.22 mm (correspondant au diamètre de la lime à 1 mm de la pointe). Une pointe de gutta de diamètre égal au diamètre de la pointe de la lime (soit 0.2 mm) est donc trop petite et il y a un risque de passage de la gutta au travers de l'apex. The disadvantage of endodontic files is on the one hand that they have a cutting power over their entire active zone including the end of the tip, on the other hand that they are conical, the diameter of the tip being more small as the diameter of the heel. There is therefore a risk of widening the apical diameter when measuring its diameter and therefore to choose a tip of gutta percha whose diameter will be smaller than the actual diameter of the apex. In the example shown on the Figure 1, to measure the apical diameter, the practitioner inserted a conical file having a taper of 2% and a diameter of 0.2 mm at the tip. If the practitioner goes beyond the apex, for example 1 mm, he will enlarge the diameter of the apex by 0.02 mm, a real diameter of the apex of 0.22 mm (corresponding to the diameter of the file at 1 mm from the tip). A tip of gutta diameter equal to the diameter of the tip of the file (0.2 mm) is too small and there is a risk of passage of the gutta through the apex.
Description de l'invention Description of the invention
L'invention propose un nouvel instrument canalaire susceptible de pallier aux inconvénients des instruments existants décrits ci-dessus. The invention proposes a novel root instrument capable of overcoming the disadvantages of the existing instruments described above.
Plus précisément, l'invention propose un instrument de traitement des canaux radiculaires, comprenant un tronçon d'extrémité et une zone active comprenant un talon adjacent au tronçon d'extrémité et une pointe, la zone active présentant une forme générale de cône inversé, un diamètre d'une section de la zone active au voisinage de la pointe étant plus grand qu'un diamètre d'une section de la zone active au voisinage du talon, l'instrument étant caractérisé en ce que la zone active présente une surface extérieure lisse. More specifically, the invention provides a root canal treatment instrument, comprising an end section and an active zone comprising a heel adjacent to the end section and a tip, the active zone having a generally inverted cone shape, an a diameter of a section of the active zone in the vicinity of the tip being greater than a diameter of a section of the active zone in the vicinity of the heel, the instrument being characterized in that the active zone has a smooth outer surface .
Par surface lisse, on entend ici une surface ne présentant aucune goujure, aucune arête vive ou émoussée, aucune rugosité, aucune bosse, aucun creux, aucun relief susceptible de frotter ou de couper la paroi du canal. Dit autrement, d'un point de vue géométrique, comme la zone active a une forme générale de cône, la surface de la zone active est telle que toute intersection entre la surface de la zone active et un plan perpendiculaire à un axe longitudinal de la zone active est un cercle.
L'absence de pouvoir de coupe de la zone active fait que l'instrument peut être utilisé pour mesurer le diamètre apical sans risque de l'élargir, même si la pointe va au delà de l'apex. Et la conicité inversée de la zone active évite tout coincement dans le canal, c'est ce qui est représenté sur la figure 3. By smooth surface is meant here a surface having no flute, no sharp edge or blunt, no roughness, no bump, no hollow, no relief likely to rub or cut the wall of the channel. In other words, from a geometric point of view, as the active zone has a general cone shape, the surface of the active zone is such that any intersection between the surface of the active zone and a plane perpendicular to a longitudinal axis of the active area is a circle. The lack of cutting power of the active zone means that the instrument can be used to measure the apical diameter without the risk of enlarging it, even if the tip goes beyond the apex. And the inverted conicity of the active zone prevents any jamming in the channel, this is what is shown in FIG.
Le tronçon d'extrémité de l'instrument peut comprendre un manche pour faciliter sa préhension. Selon une variante, le manche est adapté pour une préhension manuelle, par exemple pour la mesure du diamètre apical. Selon une autre variante, le manche comprend un moyen de connexion à un mandrin entraîné par un dispositif vibrant, par exemple pour le nettoyage du canal. L'instrument selon l'invention peut ainsi être utilisé avec un dispositif de vibration standard. The end portion of the instrument may include a handle to facilitate its grip. According to one variant, the handle is adapted for manual gripping, for example for measuring the apical diameter. According to another variant, the handle comprises means for connecting to a mandrel driven by a vibrating device, for example for cleaning the channel. The instrument according to the invention can thus be used with a standard vibration device.
La zone active peut avoir une forme de tronçon de cône à conicité fixe ou variable, continûment ou par tronçons, avec un angle au sommet de l'ordre de 0.1 % à 0.5%. A titre d'exemple, une zone active en forme de tronçon de cône à conicité fixe de l'ordre de 0.3% peut être réalisée. The active zone may have a conical section shape with fixed or variable conicity, continuously or in sections, with an apex angle of the order of 0.1% to 0.5%. By way of example, an active zone in the form of a cone section with fixed taper of the order of 0.3% can be achieved.
Un ensemble comprenant plusieurs instruments correspondants à des diamètres à la pointe différents peut être utilisé, par exemple des séries d'instruments dont le diamètre à la pointe varie par incrément de 0.05 mm : 0.20, 0.25, 0.30, 0.35, 0.40, 0.45 mm. Le choix d'un instrument avec un diamètre à la pointe particulier est alors au choix du praticien, en fonction des besoins. L'instrument selon l'invention peut être utilisé pour la mesure d'un diamètre apical d'un canal après mise en forme du dit canal à l'aide d'alésoirs. Le procédé de mesure d'un diamètre apical d'un canal radiculaire comporte une étape d'insertion d'un instrument selon l'invention tel que décrit ci-dessus. Avantageusement, l'étape
d'insertion est répétée successivement avec des instruments de diamètres à la pointe croissants, jusqu'à ce qu'un des instruments vienne en butée dans le fond du canal. Le diamètre apical mesuré correspond dans ce cas au diamètre du dernier instrument inséré. An assembly comprising a plurality of instruments corresponding to different tip diameters may be used, for example sets of instruments whose tip diameter varies in increments of 0.05 mm: 0.20, 0.25, 0.30, 0.35, 0.40, 0.45 mm. The choice of an instrument with a particular diameter at the tip is then at the discretion of the practitioner, according to the needs. The instrument according to the invention can be used for measuring an apical diameter of a channel after forming said channel using reamers. The method for measuring an apical diameter of a root canal comprises a step of inserting an instrument according to the invention as described above. Advantageously, the step insertion is repeated successively with instruments of increasing diameters at the tip, until one of the instruments comes into abutment in the bottom of the channel. The apical diameter measured corresponds in this case to the diameter of the last instrument inserted.
L'instrument selon l'invention peut également être utilisé pour le nettoyage du canal mis en forme, au choix avant ou après la mesure du diamètre apical. Dans ce cas, l'instrument est entraîné en vibration par un dispositif vibrant, dans le canal avantageusement imbibé d'un fluide. Les vibrations entraînent un phénomène de cavitation du fluide qui va améliorer l'efficacité du nettoyage. Le procédé de nettoyage d'un canal radiculaire comporte une étape d'entraînement en vibration, dans le canal à nettoyer, d'un instrument selon l'invention tel que décrit ci-dessus. Du fait de la conicité inversée et de la surface externe lisse de la zone active, lorsque l'instrument est entraîné en vibration, l'instrument s'avère particulièrement efficace pour le nettoyage d'un canal imbibé d'un fluide, tel que par exemple une solution d'hypochlorite de sodium. The instrument according to the invention can also be used for cleaning the shaped channel, either before or after measuring the apical diameter. In this case, the instrument is vibrated by a vibrating device, in the channel advantageously soaked with a fluid. The vibrations cause a phenomenon of cavitation of the fluid which will improve the cleaning efficiency. The method of cleaning a root canal comprises a step of vibrating, in the channel to be cleaned, an instrument according to the invention as described above. Because of the inverted conicity and the smooth outer surface of the active zone, when the instrument is vibrated, the instrument is particularly effective for cleaning a channel soaked in a fluid, such as example a solution of sodium hypochlorite.
Brève description des figures Brief description of the figures
L'invention sera mieux comprise, et d'autres caractéristiques et avantages de l'invention apparaîtront à la lumière de la description qui suit d'un exemple de réalisation d'un instrument canalaire selon l'invention. Cet exemple est donné à titre non limitatif. La description est à lire en relation avec les dessins annexés dans lesquels : The invention will be better understood, and other features and advantages of the invention will become apparent in the light of the following description of an exemplary embodiment of a canal instrument according to the invention. This example is given as a non-limiting example. The description is to be read in conjunction with the appended drawings in which:
• la figure 1 , déjà décrite, montre l'utilisation d'une lime endodontique connue pour la mesure d'un diamètre apical, FIG. 1, already described, shows the use of a known endodontic file for measuring an apical diameter,
• la figure 2 présente des schémas d'un instrument selon l'invention
• la figure 3 montre l'utilisation d'un instrument selon l'invention pour la mesure d'un diamètre apical, FIG. 2 shows diagrams of an instrument according to the invention FIG. 3 shows the use of an instrument according to the invention for measuring an apical diameter,
• la figure 4 montre l'utilisation d'un instrument selon l'invention pour le nettoyage d'un canal radiculaire. • Figure 4 shows the use of an instrument according to the invention for cleaning a root canal.
Description du mode de réalisation de l'invention représenté sur les figures DESCRIPTION OF THE EMBODIMENT OF THE INVENTION SHOWN IN THE FIGURES
L'instrument selon l'invention comprend une zone active 1 comprenant une pointe de diamètre DO et un talon de diamètre DX. Le talon est relié à un tronçon d'extrémité 3. La zone active a une forme extérieure générale de cône inversé, avec un diamètre à la pointe plus grand que le diamètre au talon de la zone active. A titre indicatif, DO peut être compris entre 0.20 et 0.5 mm. Dans l'exemple représenté, la conicité de la zone active est de l'ordre de 0.3%. La surface extérieure de la zone active est parfaitement lisse, elle ne présente aucune arête vive ou émoussée, et donc aucun pouvoir de coupe. The instrument according to the invention comprises an active zone 1 comprising a tip of diameter OD and a heel diameter DX. The heel is connected to an end section 3. The active zone has a general outer shape of inverted cone, with a diameter at the tip greater than the diameter at the heel of the active zone. As an indication, OD may be between 0.20 and 0.5 mm. In the example shown, the taper of the active zone is of the order of 0.3%. The outer surface of the active zone is perfectly smooth, it has no sharp or blunt edges, and therefore no cutting power.
La pointe de la zone active présente une extrémité arrondie pour faciliter le guidage de l'instrument dans le canal. L'instrument peut être réalisé en acier inoxydable, en alliage de Nickel Titane ou bien encore en matière composite. The tip of the active zone has a rounded end to facilitate guiding the instrument in the channel. The instrument can be made of stainless steel, Nickel Titanium alloy or composite material.
Le tronçon d'extrémité 3 comprend un manche 2 adapté pour une connexion sur un dispositif vibrant. Inséré dans le canal imbibé d'hypochlorite de sodium NaOCI et entraîné en vibrations, le tronçon d'extrémité 3 ne bouge pas mais la zone active de l'instrument agit comme un fouet et provoque un phénomène de cavitation du fluide
dans le canal (figure 4), ce qui entraîne la remontée les débris vers le talon de l'instrument. The end portion 3 comprises a handle 2 adapted for connection to a vibrating device. Inserted in the channel soaked with NaOCI sodium hypochlorite and driven in vibrations, the end section 3 does not move but the active zone of the instrument acts like a whip and causes a cavitation phenomenon of the fluid in the channel (Figure 4), which brings up the debris towards the heel of the instrument.
Le manche 2 peut bien sûr être aussi utilisé pour une préhension manuelle de l'instrument. Inséré manuellement dans le canal, l'instrument ne peut endommager le diamètre apical ni la partie au delà de l'apex, même si la pointe de l'instrument va au delà de l'apex (figure 3).
The handle 2 can of course also be used for manual gripping of the instrument. Manually inserted into the canal, the instrument can not damage the apical diameter or the part beyond the apex, even if the tip of the instrument goes beyond the apex (Figure 3).
Claims
1 . Instrument de traitement des canaux radiculaires, comprenant un tronçon d'extrémité (3) et une zone active (1 ), le tronçon d'extrémité comprenant un manche destiné à la préhension de l'instrument, la zone active comprenant un talon adjacent au tronçon d'extrémité et une pointe, la zone active présentant une forme générale de cône inversé, un diamètre d'une section de la zone active au voisinage de la pointe étant plus grand qu'un diamètre d'une section de la zone active au voisinage du talon, l'instrument étant caractérisé en ce que la zone active présente une surface extérieure lisse. 1. A root canal treatment instrument, comprising an end section (3) and an active area (1), the end section comprising a handle for grasping the instrument, the active area comprising a heel adjacent to the section end and a tip, the active zone having a generally inverted cone shape, a diameter of a section of the active zone in the vicinity of the tip being greater than a diameter of a section of the active zone in the vicinity of the heel, the instrument being characterized in that the active zone has a smooth outer surface.
2. Instrument selon la revendication 1 , dans lequel la zone active a une forme de tronçon de cône et comporte un angle au sommet de l'ordre de 0.1 % à 0.5%. 2. The instrument of claim 1, wherein the active zone has a cone section shape and has an apex angle of the order of 0.1% to 0.5%.
3. Instrument selon la revendication 2, dans lequel l'angle au sommet est de l'ordre de 0.3%. 3. The instrument of claim 2, wherein the apex angle is of the order of 0.3%.
. instrument selon l'une des revendications 1 à 3, dans lequel le manche comprend un moyen de connexion (2) à un mandrin entraîné en vibration par un dispositif vibrant. . An instrument according to one of claims 1 to 3, wherein the handle comprises connection means (2) to a mandrel driven in vibration by a vibrating device.
5. Procédé de mesure d'un diamètre apical d'un canal radiculaire, caractérisé en ce qu'il comporte une étape d'insertion d'un instrument selon l'une des revendications 1 à 4 dans le canal radiculaire. 5. Method for measuring an apical diameter of a root canal, characterized in that it comprises a step of inserting an instrument according to one of claims 1 to 4 into the root canal.
6. Procédé selon la revendication 5, dans lequel l'étape d'insertion d'un instrument est répétée avec des instruments de diamètres à la pointe croissants, jusqu'à ce qu'un des instruments vienne en butée dans un fond du canal, le diamètre apical correspondant au diamètre du dernier instrument inséré. The method of claim 5, wherein the step of inserting an instrument is repeated with instruments of increasing tip diameter, until one of the instruments abuts a bottom of the channel, the apical diameter corresponding to the diameter of the last instrument inserted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0957477 | 2009-10-26 | ||
| FR0957477A FR2951631B1 (en) | 2009-10-26 | 2009-10-26 | RADICULAR CHANNEL TREATMENT INSTRUMENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011051584A1 true WO2011051584A1 (en) | 2011-05-05 |
Family
ID=42232603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2010/051901 WO2011051584A1 (en) | 2009-10-26 | 2010-09-14 | Instrument for treating root canals |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2951631B1 (en) |
| WO (1) | WO2011051584A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011131895A1 (en) * | 2010-04-23 | 2011-10-27 | Micro Mega International Manufactures | Method for sealing a root canal, and rotary plugger for carrying out the method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3863345A (en) * | 1971-12-30 | 1975-02-04 | Oscar Malmin | Endodontic sealing system and apparatus |
| US6261099B1 (en) * | 1997-04-07 | 2001-07-17 | Lightspeed Technology, Inc. | Method and apparatus for filling a root canal of a tooth |
-
2009
- 2009-10-26 FR FR0957477A patent/FR2951631B1/en active Active
-
2010
- 2010-09-14 WO PCT/FR2010/051901 patent/WO2011051584A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3863345A (en) * | 1971-12-30 | 1975-02-04 | Oscar Malmin | Endodontic sealing system and apparatus |
| US6261099B1 (en) * | 1997-04-07 | 2001-07-17 | Lightspeed Technology, Inc. | Method and apparatus for filling a root canal of a tooth |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011131895A1 (en) * | 2010-04-23 | 2011-10-27 | Micro Mega International Manufactures | Method for sealing a root canal, and rotary plugger for carrying out the method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2951631A1 (en) | 2011-04-29 |
| FR2951631B1 (en) | 2012-06-08 |
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