Irrigation procedure for cleaning root canals

Description

[0001] The present invention relates to a dental root canal rinsing arrangement for cleaning dental root canals of a patient, comprising a vacuum device, a suction element with an elongated suction tip which consists at least partially of a flexible material and is positioned at a front end of the suction element, wherein a suction channel is formed in the suction element which extends from the rear end of the suction element in the direction from its front end into the suction tip, the suction tip has at least one suction opening, and the rear end of the suction element is connected to the vacuum device via a line, in particular a connecting hose, so that rinsing fluid containing tissue residues and / or bacteria can be sucked into the suction channel by means of a vacuum generated by the vacuum device via the suction openings and via the suction channel to the vacuum device.

[0002] Furthermore, the invention relates to a suction element for sucking out rinsing fluid containing tissue residues and / or bacteria from a tooth root canal of a patient, having an elongated suction tip which is at least partially made of a flexible material, wherein the suction element has a suction channel which extends from the rear end of the suction element in the direction of its front end into the suction tip, and wherein the suction tip has at least one suction opening which opens into the suction channel.

[0003] Also disclosed is a non-claimed method for cleaning the dental root canals of a patient, in which a rinsing fluid is supplied to a dental root canal to be cleaned and this fluid is sucked out by means of a vacuum device together with any tissue residues contained therein and / or via a suction element having an elongated suction tip which consists at least partially of a flexible material and is positioned at a front end of the suction element.

[0004] Dentistry encompasses a variety of treatment methods, including endodontic methods for treating the diseased interior of a tooth, such as root canal treatment. Root canal treatment can save a tooth whose pulp is severely inflamed or dead. This involves a cleaning process that removes the infected tissue inside the root canal. Specifically, the infected root dentin surrounding the root canal is removed by filing it out, thereby widening the root canal. Special endodontic instruments such as endodontic files or endodontic drills are used for this purpose. During the cleaning process, the root canal is repeatedly rinsed with an irrigating solution.

[0005] The problem underlying the classic cleaning methods is that a large part of the branched root canal system eludes mechanical and chemical cleaning due to its anatomical complexity.

[0006] US Pat. No. 8,388,345 B2 discloses an arrangement for cleaning a root canal that is designed to address these problems. It comprises a suction element with an elongated suction tip, which is made at least partially of a non-metallic, flexible material and is positioned at a front end of the suction element. A suction channel is formed in the suction element, which extends from the rear end of the suction element in the direction of its front end into the suction tip. The suction tip has a plurality of suction openings distributed along its circumference, which penetrate the wall of the suction tip, starting from its outer surface, and open into the suction channel.The suction element can be connected to a vacuum device to draw irrigating fluid, containing bacteria and tissue residue, from a dental root canal to be cleaned into the suction channel and then to the vacuum device. A driver can also be connected to the rear end of the suction element, which can be used to vibrate the suction tip to activate the irrigant in the dental root canal and thus support the cleaning process.

[0007] Another ultrasonic rinsing arrangement for cleaning a patient’s tooth root canals is previously known from CN105411711A.

[0008] The object of the invention is to provide a particularly sound-activated root canal irrigating device with which the cleaning process of a root canal can be optimized and, in particular, carried out continuously. Furthermore, a suction element and a holder for such a root canal irrigating device are to be provided.

[0009] This object is achieved by a dental root canal rinsing arrangement according to claim 1 and a suction element according to claim 5.

[0010] In particular, in a tooth root canal rinsing arrangement and a suction element of the type mentioned at the outset, according to a first aspect of the invention, this object is achieved in that the suction element has an internal oscillator which is held in the suction tip and projects from the front end thereof, wherein the suction tip and the internal oscillator are connected to one another at their rear end, and preferably additionally the suction tip is designed and dimensioned in such an elastic manner that when the suction tip is inserted into a tooth root canal, it seals the canal in the region of the tooth root canal wall.

[0011] It has been shown that the rinsing effect can be further improved by the inventive design of the suction tip. For this purpose, a suction tip is manufactured from a relatively soft and elastic material, in particular a suitable plastic material such as PE or PA. Upon insertion of the suction element, this tip comes into contact with the tooth root canal wall at a certain insertion depth, thus sealing the tooth root canal between the tooth root canal wall and the suction tip. As a result of this sealing, the effect of the vacuum device creates a negative pressure in the tooth root canal, which suddenly drops again when the suction element is withdrawn from the tooth root canal.The shock wave thus generated and the rapid expansion and collapse of the air bubbles contained in the tooth root canal and the rinsing solution therein support the cleaning of the digit root canal and help to loosen and remove the tissue and debris from the mechanically inaccessible areas of the digit root canal system.

[0012] Accordingly, the method for cleaning the tooth root canals of a patient of the type mentioned at the outset is characterized in that a suction tip is used which is designed and dimensioned to be elastic in such a way that when the suction tip is inserted into the tooth root canal, it seals it off in the area of ​​the tooth root canal in order to create a negative pressure in the tooth root canal, and then the suction tip is repeatedly moved back and forth in the tooth root canal in order to reopen the tooth root canal in the area of ​​the tooth root canal wall and to seal it off.

[0013] According to the claimed invention, the suction element comprises an internal oscillator held in the suction tip and protruding from its front end, the suction tip and the internal oscillator being connected at their rear ends. When vibrations are introduced into the suction element via a sonic handpiece during a cleaning process to cause the suction tip to vibrate, the internal oscillator is also set into corresponding vibrations, thus supporting the cleaning action at its front end protruding from the suction tip. The internal oscillator is thus particularly effective even when the suction tip seals off the tooth root canal and can no longer vibrate itself at this moment.

[0014] Nickel-titanium or nickel-titanium-copper alloys, for example, are considered as metal materials for the hollow inner oscillator. In particular, the inner oscillator can be made of a heat-treated nickel-titanium alloy with low pseudoelasticity and relatively high pseudoplasticity, preferably a martensitic SMA alloy. Likewise, the inner oscillator can be made of a heat-treated nickel-titanium-copper alloy with low pseudoelasticity and relatively high pseudoplasticity.

[0015] Alternatively, the hollow inner oscillator may be made of plastic and / or metal and / or plastic-coated metal.

[0016] According to a preferred embodiment, the inner oscillator has an outer diameter of ≥ 0.1 mm and / or ≤ 0.5 mm.

[0017] In a further development of the invention, it is provided that the suction tip tapers towards its front end, wherein the suction tip has a conically tapered sealing section which is designed and dimensioned to be elastic in such a way that when the suction tip is inserted into a tooth root canal, it seals it off in the region of the tooth root canal wall.

[0018] In one embodiment, the outer diameter of the conical sealing section of the suction tip is ≥ 0.4 mm, in particular ≤ 0.5 mm and / or ≥ 1.4 mm, in particular ≥ 1.2 mm.

[0019] According to the invention, it is provided that the suction element has a connecting part to which the line is connected and in which a suction channel section is formed, and that the suction tip and the inner oscillator are each fixed at their rear end to the connecting part and are thus connected to one another, the inner oscillator engages in the suction channel section and is fixed there to the connecting part.

[0020] Furthermore, the object is achieved in a suction element of the type mentioned at the outset according to the second aspect of the invention in that a connecting part is attached or formed at the rear end of the suction tip, which connecting part has connecting means for connection to a vacuum device, and in that the connecting part has fastening means for detachably attaching the suction element to a holder provided or attached to a sonic handpiece.

[0021] The second aspect of the invention is therefore based on the idea of ​​designing the vacuum irrigation arrangement, and in particular its suction element, in such a way that it is possible to set the irrigation fluid in the tooth root canal into vibration during the irrigation process using sonic vibrations generated by a commercially available sonic handpiece and introduced into the suction element. It has been shown that the cleaning effect can be significantly optimized through the inventive combination of apical irrigation / vacuum suction as well as simultaneous sonic activation and the associated swirling of the irrigation fluid. Above all, the chemical effectiveness of the irrigation solution is increased due to the continuous fluid exchange and the swirling of the irrigation solution. Furthermore, all areas of the tooth root canal (lateral canals, isthmus, etc.) are reached and cleaned.Finally, clogging of the suction openings can be avoided and thus reliable, continuous suction of the rinsing liquid can be ensured.

[0022] According to a preferred development of the invention, the sonic handpiece can have a holder, particularly at its distal end, via which the suction element is detachably attached to the sonic handpiece. Alternatively, and according to a preferred embodiment, a holder is detachably mounted on the distal end of the sonic handpiece, via which the suction element is detachably attached to the sonic handpiece. Corresponding coupling means can be provided on the sonic handpiece and the holder, via which the holder is mounted to the sonic handpiece.

[0023] Conveniently, the holder comprises fastening means, particularly at its distal end, which cooperate with corresponding fastening means of the suction element, in particular of the connecting part, in order to detachably attach the suction element to the sonic handpiece. According to one embodiment of this embodiment, the fastening means on the holder comprise a retaining ring with a through-opening through which the suction element passes. Preferably, the through-opening is provided with an internal thread, and the fastening means of the connecting part comprise a cylindrical section with an external thread, which is screwed into the through-opening in order to easily detachably attach the suction element to the sonic handpiece.

[0024] Furthermore, the connecting part, which can be made of plastic or metal, preferably has a plug-in section behind the cylindrical section that widens in a funnel-like manner toward the rear end of the connecting part. The line can be connected to the suction element via a plug-in connection, preferably to the connecting part, and particularly preferably to the plug-in section of the connecting part.

[0025] To establish and / or secure the plug-in connection, connecting means can be formed on the suction element, in particular the connecting part of the suction element, and / or the line. For example, the connecting means can be designed to establish a hose / plug-in nipple connection between the line and the connecting part.

[0026] According to a preferred embodiment according to the second aspect of the invention, it is provided that the suction tip consists of a stainless steel or that the suction tip consists of a heat-treated nickel-titanium alloy, in particular a heat-treated nickel-titanium alloy with a low pseudoelasticity and a relatively high pseudoplasticity, preferably of a martensitic FGL alloy, or that the suction tip consists of a heat-treated nickel-titanium-copper alloy, in particular a heat-treated nickel-titanium-copper alloy with a low pseudoelasticity and a relatively high pseudoplasticity, or that the suction tip consists of plastic.

[0027] The front end of the suction tip can be closed to ensure easy suction of tissue from the patient's root canal and prevent clogging due to marginal contact with the tool body. An oval shape can also prevent such marginal contact.

[0028] For optimal performance, the suction tip can taper towards its front end to facilitate easy insertion into a tooth root canal, and / or the suction channel can be formed centrally within the suction tip. It can be designed in various lengths, tapers, and diameters to allow adaptation to individual dental anatomies.

[0029] The suction channel can be open at its front end, forming a suction opening. Likewise, the suction tip can have several suction openings that penetrate the wall of the suction tip, starting from its outer surface, and open into the suction channel.

[0030] In this embodiment of the invention, the suction openings are expediently located at the front end of the suction tip, so that tissue located deep in the patient's tooth root canal can also be loosened and sucked away with the rinsing fluid, thus enabling a rinsing effect right up to the apical region.

[0031] Likewise, several suction openings can be formed one behind the other in the longitudinal direction of the suction tip in the outer surface of the suction tip, which enables the suction of rinsing fluid from the patient's tooth root canal over a corresponding length.

[0032] Furthermore, a plurality of suction openings can be arranged offset from one another along the circumference of the suction tip, in particular evenly, so that rinsing fluid can be sucked out of the patient's tooth root canal over the entire circumference of the suction tip.

[0033] Preferably, several rows of suction openings arranged one behind the other in the longitudinal direction of the suction tip and aligned with one another are formed in the lateral surface of the suction tip and the rows are distributed along the circumference of the suction tip, wherein in particular the suction openings of rows adjacent along the circumference are offset from one another in the longitudinal direction.

[0034] The vacuum system can be a standard dental suction system. To improve the suction effect, a vacuum pump with a vacuum of 400 to 1000 mmHg or more is used.

[0035] Furthermore, to achieve the object according to the invention, a vacuum rinsing arrangement of the type mentioned at the outset is specified, in which a valve device is provided between the vacuum device and the suction element, which valve device is designed to alternately open and close the line between the vacuum device and the suction element at such a frequency that longitudinal vibrations are generated in the suction channel of the suction tip.

[0036] These longitudinal oscillations generate a repeated rise and fall of a negative pressure transmitted to the suction channel via the vacuum device, stimulating the irrigating fluid in a dental root canal. This achieves a similar effect to that achieved by repeatedly sealing / opening the dental root canal according to the first aspect of the invention, namely, the generation of shock waves that cause air bubbles in the irrigating solution to collapse and expand again.

[0037] Finally, a holder is proposed for connecting a suction element (according to the invention) to a commercially available sonic handpiece. This holder comprises an elongated holder body having coupling means for connecting to a sonic handpiece at one end and fastening means for releasably attaching a suction element at the other end. The holder is designed to transmit sound vibrations from a sonic handpiece to the suction element.

[0038] Advantageously, the fastening means have a through-hole through which the suction element can pass. Preferably, the through-hole is provided with an internal thread so that the suction element can be screwed into the through-hole and thus connected to the sonic handpiece.

[0039] For further embodiments of the present invention, reference is made to the following exemplary embodiments with reference to the accompanying drawings. In the drawings: Figure 1 shows a schematic representation of an embodiment of the tooth root canal rinsing arrangement according to the invention, Figure 2 shows a sectional view of the holder and a suction element for the tooth root canal rinsing arrangement from Figure 1 , Figure 3 a sectional view of the front end area of ​​the suction tip of the suction element from Figure 2 , Figure 4 a further sectional view of the front end area of ​​the suction tip of the suction element from Figure 2, Figure 5 a schematic representation of a further embodiment of the negative pressure rinsing arrangement according to the invention, Figure 6 a schematic representation of an interaction of both embodiments of the negative pressure rinsing arrangement according to the invention, Figure 7 a sonic handpiece with a suction element held therein for a numeral root canal rinsing arrangement according to a further embodiment of the present invention, Figure 8 the arrangement of Figure 7 in front view, Figure 9 the arrangement of Figure 8 in section AA, Figure 10 the arrangement of Figure 7 without sonic handpiece in enlarged view, Figure 11 the arrangement of Figure 10 in section along the line BB, Figure 12 the suction element from the Figures 7 to 11 in an enlarged and partially transparent view and Figure 13 the suction element from Figure 12 in an enlarged top view.

[0040] In the Figure 1An embodiment of a vacuum rinsing arrangement 1 for cleaning a patient's dental root canal according to the present invention is shown. The vacuum rinsing arrangement 1 comprises a vacuum device 2, which can be designed as a conventional dental suction system, but here has a vacuum pump 3 with a vacuum of 400 to 1000 mmHg and a vacuum and collecting container 4, and a suction element 5 with an elongated suction tip 6 made of a flexible material positioned at its front end.

[0041] The suction tip 6 can be designed in different ways. In the embodiment shown in the Figures 2 to 4 As shown, the suction tip 6 is made of a heat-treated nickel-titanium alloy, namely a martensitic SMA alloy with a low pseudoelasticity and a relatively high pseudoplasticity.

[0042] As shown by the Figures 3 and 4 As can be seen, a suction channel 7 is formed centrally in the suction element 5, which extends from the rear end of the suction element 5 to the front closed end of the suction tip 6.

[0043] Furthermore, the suction tip 6 has a plurality of suction openings 8, which penetrate the wall of the suction tip 6 starting from its outer surface and open into the suction channel 7. In the illustrated embodiment, four rows of three suction openings 8 are formed, each arranged one behind the other in the longitudinal direction of the suction tip 6 and aligned with one another. The rows are evenly distributed along the circumference of the suction tip 6, i.e., positioned with a 90° offset from one another. The suction openings 8 in the rows are arranged equidistantly, with the suction openings 8 of adjacent rows along the circumference being offset from one another in the longitudinal direction by half a hole spacing.

[0044] The suction element 5 is connected at its rear end via a line 9 to the vacuum device 2, so that rinsing fluid introduced into a tooth root canal can be sucked by means of a negative pressure generated by the vacuum device 2 via the suction openings 8 into the suction channel 7 and via this to the vacuum device 2. For illustration, Figure 4 Arrows 10 show the flow path along which the rinsing fluid is sucked off.

[0045] Specifically, the suction element 5 has a connecting part 11 made of a plastic material which is fixedly attached to the rear end of the suction tip 6 and which comprises a cylindrical section 12 with an external thread at its front end 11 and has a suction channel section 7a centrally.

[0046] At its rear end, the connecting part 11 is connected to the line 9 via a plug connection. To establish and / or secure the plug connection, a funnel-shaped plug section 13 with a circumferential bead 14 is formed on the connecting part 11, which, when the plug connection is established, engages with the line 9 in the manner of a hose-plug nipple connection.

[0047] The vacuum rinsing arrangement 1 further comprises a sonic device in the form of a conventional sonic handpiece 15, which carries coupling means at one end that are designed specifically for the manufacturer and serve for the detachable attachment of attachments. According to the invention, a holder 16 or a coupling element is attached to the sonic handpiece 15 as an attachment. This holder 16 is designed and serves to fix the suction element 5 to the sonic handpiece 15, so that vibrations / oscillations generated by the sonic handpiece 15 can be introduced into the suction element 5 to cause the suction tip 6 to vibrate.

[0048] The holder 16 comprises a holder body 16a, which carries at one end coupling means 16b for attaching the holder 16 to the sonic handpiece 15 and has at its opposite end fastening means for fixing the suction element 5 to the holder 16b. The fastening means comprise a retaining ring 17 with a through-opening 17a provided with an internal thread. The through-opening 17a is penetrated by the suction element 5, which is screwed into the through-opening 17a via the external thread on the cylindrical portion 12.

[0049] Figure 5 shows a further embodiment of a vacuum flushing arrangement 1 according to the present invention. This differs from the one shown in the Figures 1 to 4 illustrated embodiment in that it has a valve device 18 along the line 9, between the suction element 5 and the vacuum device 2, and the sonic handpiece 15 is missing.

[0050] The valve device 18 is designed to alternately open and close the line 9 at a frequency such that longitudinal oscillations are generated in the suction channel 7 of the suction tip 6. These oscillations cause a repeated increase and decrease in the negative pressure transmitted to the suction channel 7 via the negative pressure device 2, thereby stimulating the rinsing fluid in the dental root canal.

[0051] Thus, the sonic handpiece 15 and the valve device 18 can be used selectively or together to cause the suction tip 6 to vibrate.

[0052] In the Figures 6 to 13 is an alternative embodiment of a sonic handpiece 15 with a holder 16 and a suction element 5 for the tooth root canal rinsing arrangement made of Figure 1shown. As can be seen in particular in Figures 9, 11 and 12, the suction element 5 comprises an elongated suction tip 6, which is made of a flexible plastic material and is hollow in the manner of a suction cannula. As can be easily seen in the figures, the suction tip 6 has an outer contour that tapers from the rear end of the suction tip 6 to its front end. The rear, open end of the suction tip 6 is placed onto a cylindrical connecting part 11 and fixed thereto. As already explained, the connecting part 11 has an external thread, via which it is screwed into the holder 16, which is fixed to the sonic handpiece 15, so that vibrations / oscillations generated by the sonic handpiece 15 can be introduced into the suction element 5.A suction channel 7 is formed centrally in the suction element 5, extending from the rear end of the connecting part 11 to the front open end of the suction tip 6, with a suction channel section 7a formed in the connecting part 11. The line 9 leading to the vacuum device 2 is connected to the connecting part 11.

[0053] The suction element 5 additionally has an internal oscillator 6a, which is fixed in the suction channel section 7a of the connecting element, extends through the suction tip 6, and protrudes from its front end. The suction tip 6 and the internal oscillator 6a are connected to each other via the connecting part 11.

[0054] In the design according to Figure 11The inner oscillator 6a is made of a solid material, in this case a plastic-coated wire, although this embodiment is not covered by the claims. According to the invention, it is possible to make the inner oscillator 6a hollow, in which case it is preferably made of a plastic material.

[0055] The outer contour of the suction tip 6 is selected such that when the suction tip 6 is inserted into a tooth root canal, it comes into contact with the tooth root canal wall from a certain insertion depth, thus sealing the tooth root canal between the tooth root canal wall and the suction tip. As a result of this sealing, a negative pressure is created in the tooth root canal during root canal treatment due to the effect of the negative pressure device 2, which suddenly drops again when the suction element 5 is withdrawn from the tooth root canal. By alternately inserting and withdrawing the suction tip 6 into and out of the tooth root canal, shock waves can be generated alternately, with the air bubbles contained in the tooth root canal and the rinsing solution therein expanding and collapsing simultaneously, thereby assisting the cleaning of the tooth root canal.

[0056] If the suction tip 6 closes the tooth root canal, this simultaneously results in vibrations introduced into the suction element 5 via the sonic handpiece 15 no longer or hardly at all causing the suction tip 6 to vibrate. The internal oscillator 6a, however, continues to vibrate, so that the irrigating fluid continues to be stimulated by the vibrating front end of the internal oscillator 6a protruding from the suction tip 6.

[0057] As the figures show, the suction tip 6 has a plurality of conical sections on the outside, which are designed and dimensioned as a sealing section D in order to seal the tooth root canal as described. List of reference symbols

[0058] 1Vacuum rinsing assembly 2Vacuum device 3Vacuum pump 4Vacuum and collecting container 5Suction element 6Suction tip 6aInternal oscillator 7Suction channel 7aSuction channel section 8Suction opening 9Line 10Arrows 11Connecting part 12Cylindrical section 13Plug-in section 14Bead 15Sonic handpiece 16Holder 16aHolder body 16bCoupling means 17Holder ring 17aThrough opening 18Valve device 19Internal oscillator DDealing section

Claims

1. Dental root canal irrigation arrangement for cleaning dental root canals of a patient, with a vacuum device (2), a suction element (5) with an elongated suction tip (6), which is at least partially made of a flexible material and is positioned at a front end of the suction element (5), and a sonic device having a sonic handpiece (15), wherein a suction channel (7) is formed in the suction element (5), which extends from the rear end of the suction element (5) in the direction of its front end into the suction tip (6), wherein the suction tip (6) has at least one suction opening (8) which opens into the suction channel (7), and the rear end of the suction element (5) is connected to the vacuum device (2) via a conduit (9), in particular by a connecting hose, so that a rinsing liquid with tissue residues and / or bacteria contained therein can be sucked by means of a vacuum generated by the vacuum device (2) via the at least one suction opening (8) into the suction channel (7) and via the latter to the vacuum device (2), wherein the suction element (5) has an inner oscillator (6a) which is held in the suction tip (6) and projects out of the front end thereof, and wherein the inner oscillator (6a) is hollow, wherein the suction tip (6) is designed elastically and dimensional in such a way that it can be introduced into a dental roof canal, wherein the suction element (5) is detachably attached to the distal end of the sonic handpiece (15) so that sonic vibrations generated by the sonic handpiece (15) can be introduced into the suction element (5) to cause the suction tip (6) to vibrate and, wherein the suction tip (6) and the inner oscillator (6a) are connected to one another at their rear end, wherein the suction element (5) has a connecting part (11) that comprises attachment means for releasably attaching the suction tip at the sonic handpiece (15), wherein the conduit (9) is connected to the connecting part (11) and a suction canal section (7a) is formed in the connecting part (11), and wherein the suction tip (6) and the inner oscillator (6a) each fixed at their rear end to the connecting part (11) and are thus connected to one another, wherein the inner oscillator (6a) engages in the suction channel section (7a) and is fixed there to the connecting part (11).

2. Dental root canal irrigation arrangement according to claim 1, characterized in that the inner oscillator (6a) consists of plastic and / or of metal and / or of plastic-coated metal, and / or that the inner oscillator (6a) has an outer diameter of >0.1 mm and / or <0.5mm.

3. Dental root canal irrigation arrangement according to one of the previous claims, characterized in that the suction tip (6) tapers towards its front end, the suction tip (6) having a conically tapering sealing section (D) which is designed elastically and dimensioned in such a way that, when the suction tip (6) is introduced into a tooth root canal, it seals the latter in the region of the tooth root canal wall, wherein - preferably - the outer diameters of the conically tapering sealing section (D) of the suction tip (6) is ≥ 0,4 mm, in particular ≥ 0,5 mm and / or ≤ 1,4 mm, in particular ≤ 1,2 mm.

4. Dental root canal irrigation arrangement according to one of the previous claims, characterized in that suction tip (6) is plugged onto the connecting part (11).

5. Suction element for sucking irrigation liquid from a dental root canal of a patient to be cleaned, with an elongated suction tip (6) which consists at least partially of a flexible material, and is positioned at a front end of the suction element (5), wherein the suction element (5) has a suction channel (7) which, starting from the rear end of the suction element (5), extends in the direction of its front end into the suction tip (6), and wherein the suction tip (6) has at least one suction opening (8) which opens into the suction channel (7), wherein the suction element (5) has an inner oscillator (6a) which is held in the suction tip (6) and projects out of the front end thereof, and wherein the inner oscillator (6a) is hollow, wherein the suction tip (6) is designed elastically and dimensional in such a way that it can be introduced into a dental roof canal, wherein the suction tip (6) and the inner oscillator (6a) are connected to one another at their rear end, wherein the suction element (5) has a connecting part (11) that comprises attachment means for releasably attaching the suction tip at a sonic handpiece (15) wherein a conduit (9) can be connected to the connecting part (11) and a suction canal section (7a) is formed in the connecting part (11), wherein the suction tip (6) and the inner oscillator (6a) each fixed at their rear end to the connecting part (11) and are thus connected to one another, wherein the inner oscillator (6a) engages in the suction channel section (7a) and is fixed there to the connecting part (11).

6. Suction element according to claim 5, characterized in, in that the inner oscillator consists in particular of plastic and / or of metal and / or of plastic-coated metal.

7. Suction element according to claim 5 or 6, characterized in that the inner oscillator (6a) has an outer diameter of ≥ 0.1 mm and / or ≤ 0.5mm.

8. Suction element according to one of claims 5 to 7, characterized in that the suction tip (6) tapers towards its front end and has a conically tapering sealing section (D), which is elastically formed and dimensioned in such a way that, when the suction tip (6) is introduced into a root canal, it seals the latter, wherein, preferably the outer diameters of the conical sealing section (D) of the suction tip are ≥ 0.4mm, in particular ≥ 0.5mm and / or ≤ 1.4 mm, in particular ≤ 1.2 mm.

9. Suction element according to one of the claims 5 to 8, characterized in that the suction tip has a plurality of suction openings (8) which penetrate the wall of the suction tip (6) starting from its outer lateral surface and open into the suction channel (7).

10. Suction element according to claim 9, characterized in that the suction openings (8) are located at the front end of the suction tip (6), and / or in that in each case a plurality of suction openings (8) are formed one behind the other in the longitudinal direction of the suction tip (6) in the lateral surface of the suction tip (6), and / or in that in each case a plurality of suction openings (8) are distributed along the circumference of the suction tip (6), in particular uniformly distributed, are formed in the circumferential surface of the suction tip (6), and / or in that a plurality of rows of suction openings (8) lying one behind the other in the longitudinal direction of the suction tip (6) and aligned with one another are formed in the circumferential surface of the suction tip (6), and the rows are distributed along the circumference of the suction tip (6), in particular the suction openings (8) of rows adjacent along the circumference being offset with respect to one another in the longitudinal direction.