A dental treatment device, method for operating such a dental treatment device and use of a powder or scaler tip in such a dental treatment device

Abstract

A dental treatment device (100) including a powder gas jet unit (10) and / or a scaler (20), wherein the dental treatment device (100) is configured to operate a handpiece (11, 21) and comprises a base station (30), wherein the dental treatment device (100) comprises a control unit (33) being configured and determined to reset a at least one operating parameter at the dental treatment device (100) for a dental treatment, after and / or prior to a treatment cycle.

Description

[0001] FERTON HOLDING S.A.

[0002] MSP Ref: 49512 PT-WO PM / SK

[0003] A dental treatment device, method for operating such a dental treatment device and use of a powder or scaler tip in such a dental treatment device

[0004] The present invention concerns a dental treatment device, a method for operating such a dental treatment device, and a use of a powder or a scaler tip for such a dental treatment device.

[0005] Dental treatment devices are well-known in the prior art. For example, the prior art describes dental treatment devices being intended for tooth prophylaxis. Such dental prophylaxis is intended to remove calculus, tartar, discoloration and / or biofilms from the tooth. Typically, a scaler and / or powder gas jet unit is used to remove and clean the tooth. In the last 20 years, such dental treatment devices were optimized for different tooth regions and even allow the cleaning process of a tooth in the periodontal pocket comprising sensitive dentin at the root of the tooth. However, the treatment of such regions makes significant adaptation necessary to avoid damages on the teeth. As a result, devices, which are for example configured to handle different dental treatments, in particular with the same tool, such as a scaler or powder gas jet unit, need to be configured to adjust their operating parameters properly to avoid damage of the tooth, especially of the dentin of the tooth. In the past, several approaches have already been introduced into powder gas jet units and / or scalers, to avoid that the wrong operating setting creates a danger for a patient. For example, it is well-known from the prior art that a pressure for a powder chamber, in which the powder gas mixture is generated, is adapted, when the powder chamber is exchanged. Thus, it is allowed to use different powder chambers, each of them being specified for one certain powder or dental treatment. These powder chambers can be exchanged and the proper gas pressures can be set to generate the desired powder gas mixture.

[0006] Document WO 91 / 07 144 knows a mouthwash device, which can be operated in a first operating mode and a second operating mode. The power of the ejected liquid in the first mode is different from the one in the second mode and by using a switch, you can switch between the first mode and the second mode. Thereby, it is provided that the switch auto-49512 PT-WO PM / SK © matically re-turns to the position for the first mode as soon as the switch is no longer actuated by the operator. This allows to switch between two operating levels during the treatment.

[0007] Considering the prior art, it is the objective technical problem of this invention to provide a dental treatment device, which further simplifies the handling of the dental treatment device and in particular reduces the risks for a patient being treated during the treatment.

[0008] The problem is solved by a dental treatment device according to claim 1 and a method for operating a dental treatment device according to claim 14 and an use of a powder or a scaler tip for such a dental treatment device according to claim 15. Advantages and preferred embodiments of the invention are discussed in the dependent claims, the description, and the figures.

[0009] According to a first aspect a dental treatment device including a powder gas jet unit and / or a scaler is provided, wherein the dental treatment device is configured to operate a handpiece and comprises a base station, wherein the dental treatment device comprises a control unit being configured and determined to reset, in particular automatically, at least one operating parameter at the dental treatment device for a dental treatment, after and / or prior to a treatment cycle.

[0010] Contrary to the prior art, it is provided that by using the control unit, the at least one operating parameter is reset prior and / or after the treatment cycle, in particular prior and / or after each treatment cycle. In particular, it is provided that the at least one operating parameter is reset to a defined and / or predetermined operating parameter prior and / or after each treatment cycle. As a result, it is guaranteed that, when the operator starts a new treatment cycle, well defined operating parameters, which are known and expected by the operator, are set. As a result, it is no longer necessary that the operator checks which operating parameter are currently set to avoid that the wrong parameter settings lead to an operating mode, which might be dangerous for the patient. It even reduces the risk of an injury of a patient, since it can be avoided that a setting of the operating parameters is accidentally used in the beginning of the treatment cycle, which might be of danger for the tooth and / or patient.

[0011] It is preferably provided that the at least one operating parameter, being reset, is different from zero. As a consequence, it is advantageously possible to directly start with the next49512 PT-WO PM / SK © treatment cycle and not to adapt the operating parameter to a value being different from zero, if the at least one operating parameter is zero in the beginning.

[0012] The powder gas jet unit is intended to provide a powder gas mixture stream, which is directed to a tooth surface to remove calculus, tartar, discoloration and / or biofilms. Thereby, the powder gas jet unit also ejects an irrigation fluid, in particular irrigation liquid, which surrounds the ejected powder gas mixture stream. Thus, when the powder gas mixture hits the dental tooth to affect the tooth surface abrasively, a dusk formation can be reduced due to the irrigation fluid. For providing the powder gas mixture, the dental treatment device comprises a powder chamber. The powder chamber might be reversibly attachable to the base station, in particular a topside of the base station and / or a lateral side wall of the base station.

[0013] The powder chamber is preferably configured to store and accumulate powder, preferably in a powder accumulation component. Such a powder accumulation component might be conically, semi conically and / or funnel-like shaped. The accumulation component might an inner side wall facing the tube, the inner side wall being inclined with respect to a longitudinal direction of the tube. Preferably the inclination of the inner side wall is varied along a direction parallel to the longitudinal direction, in particular to avoid bridging effects of the powder.

[0014] The powder chamber is especially configured to create the powder gas mixture within the powder chamber. Therefore, the powder chamber for example comprises a gas inlet and a powder gas mixture outlet. As a result, the powder chamber does not only store the powder, it is also used for generating the powder gas mixture inside the powder chamber. For example, a tube, such as a venturi tube, is used to generate such a powder gas mixture. The tube is preferably arranged within the powder chamber, in particular inside the powder accumulation component. The tube has a first frontside end and a second frontside end being arranged opposite to each other. The first frontside end faces the gas inlet, while the second frontside end terminates within the swirl section. In operation gas, entering the gas inlet, is directed to the first frontside end of the tube and passes a section between the gas inlet and the first frontside within the powder accumulation surface, which includes powder. As a result, powder is transported through the tube to the second frontside to enter the swirl section of the powder chamber. The powder is mixed with the gas in the swirl section to create the powder gas mixture, which exits the powder chamber49512 PT-WO PM / SK O via the powder gas mixture outlet. The gas inlet and the powder gas mixture might be incorporated in components at opposite sides or in a common component, such as a socket on one side of the powder chamber. Alternatively, it is also conceivable that the powder gas mixture outlet is in a closure, preferably removable closure or cap, while the gas inlet is localized at the bottom side in a socket of the powder chamber. The tube might be localized centrally, especially concentrically to a housing of the powder chamber, or offset to the centre in a cross section extending perpendicular to the tube. In this case, preferably an asymmetric funnel might be used which has no rotational symmetry against each rotation.

[0015] In particular, the dental treatment device is configured to perform at least two different treatments for the powder gas jet unit respectively. In particular, it is provided that the powder gas jet unit is configured to perform a subgingival treatment and / or a supragingival treatment. Dependant on the type of treatment, the powder chamber might be exchanged to provide especially the correct powder being applied in the abrasive powder gas mixture.

[0016] The scaler is used to remove calculus, biofilms and / or dirt from the surface of a tooth by scratching it away. In particular, the dental treatment device comprises an ultrasonic scaler, which is configured to perform a vibrational movement of the scaler tool tip in operation. Preferably, the scaler tool tip can be exchangeable attached to a handpiece of the scaler. The handpiece of the scaler preferably comprises a vibration source, being, for example, realized by a stack of piezo elements. Dependant on the shape and design and / or the wear status of the dental tool tip, the amplitude and / or frequency of the vibration movement might be adapted. The handpiece of the powder gas jet unit might include a permanent installed nozzle element. Alternatively, it is also conceivable that the nozzle element can be exchangeable attached to the handpiece. The powder gas jet unit, in particular the handpiece including the nozzle element, is configured to be modified for a specific dental treatment. For example, it is conceivable that a nozzle tip can be attached at the outlet frontside of the powder gas jet unit, i. e. on the distal end of the powder gas jet unit to adapt the powder gas jet unit for a specific treatment, in particular for a subgingival treatment, which makes the lateral exit of the powder gas mixture necessary.

[0017] Furthermore, it is provided that the handpiece of the powder gas jet unit is connected to the base station via a supply line. It is also conceivable that the handpiece is connected to the powder chamber directly without transferring the powder gas mixture firstly into the base station and subsequently to the supply line which is connected to the handpiece of49512 PT-WO PM / SK O the powder gas jet unit. The handpiece of the scaler is preferably connected to the base station and comprises electrical signal lines and an irrigation fluid line to provide electric signals, in particular, for the vibrational source and the irrigation fluid, respectively.

[0018] It is also conceivable that the powder chamber is directly arranged at the handpiece. Such devices, being called “handys”, are also included in the understanding of a handpiece and a dental treatment device in consistency with the invention.

[0019] The base station is, in particular, the centre of organizing the supply materials and / or signals to operate the scaler and / or powder gas mixture. Therefore, it provides the necessary signals and / or materials such as the powder gas mixture and / or the irrigation fluid on the one hand and electric signals such as the signal for the scaler to operate the powder gas jet unit and scaler in a proper way on the other hand. The base station might also a part of a dentist chair.

[0020] In particular it is provided that the base station also comprises a control unit, being preferably configured to adapt the operating parameters during the treatment. For example, the base station comprises a human machine interface, which for example includes a command button and / or a display to adjust the operating parameters during the dental treatment. In this case, the operator might - without looking to the device - adjust the parameters, while they are cleaning the tooth. At some point they might be aware about the set parameters, for example if they just for a short period put the dental tool or the powder gas jet unit and / or scaler on the carrier. However, there might situations, in which the operator gets distracted and, when they want to restart the operation, they are not aware of the current operating parameters. In this case, they can start a new treatment cycle for making sure that the correct and desired operating parameters are set.

[0021] Preferably, the operating parameters, being in particular different from zero, represent a low power or a minimum power value, which is used for the softest treatment, which is possible with the dental treatment device.

[0022] In particular, it is provided that there is a trigger event defined such that when the trigger event is established, the treatment device resets the at least one operating parameter to a defined and determined, especially predetermined, operating parameter.49512 PT-WO PM / SK © Preferably, the handpiece and the base station are connectable or connected to each other in a non-treatment mode, wherein the control unit is configured and determined to reset the operating parameter when the connection is established and / or released for forming a trigger event. In this case, the handpiece can easily be connected to a holding element, for example of the base station and the control unit receives the information that the handpiece is attached or removed from the base station. This triggers a signal to reset the at least one operating parameter. Such an approach is especially of benefit, since it even allows the operator to just reset the operating parameters by putting the handpiece back to the base station instead of setting, for example by using a display or a command bottom, the parameter values back to the beginning operating value manually. This simplifies the handling of the dental treatment device.

[0023] For example, the holding elements and / or the base station comprise a weight detector or an optical detector, which detects the presence of the handpiece being attached or removed from the base station. In a specific embodiment the handpiece or holding element are attached at the lateral side of the base station. However, it is also conceivable that the handpieces are attached, in particular hang, at the frontside of the base station, when connected to the base station.

[0024] Preferably, it is provided that the control unit is configured and determined to reset the at least one operating parameter for the dental treatment during or subsequent to a cleaning mode. As a consequence, it is guaranteed that each time a cleaning mode is established, the correct operating parameters are set. This might be especially of benefit if a treatment needs to be interrupted, since a cleaning is absolutely necessary and the operator waits till the operation is finished. To guarantee that the operator uses the correct operation parameters after restarting the treatment, the cleaning mode also triggers a reset of the operation parameters.

[0025] Preferably, it is provided that the control unit is configured and determined to reset the operating parameters when the dental treatment device is switched on and / or switched off. As a result, it is possible, for example in case of a power failure and / or restart of the system, to continue the procedure, since the operator knows the set operating parameters which are familiar to them.

[0026] Preferably, it is provided that the at least one operating parameter concerns a fluid pressure. Thereby it is also conceivable that this operating parameter is set for the powder gas49512 PT-WO PM / SK O jet unit and the scaler differently. For example, the operating parameter includes two different values, one value being intended for the powder gas jet unit and the other value being intended for the scaler. Preferably, it is provided that the operating parameter concerns a vibration mode of the scaler. As a result, it is possible to adjust the forces, which can be applied by the scaler automatically.

[0027] It is also possible to set a waterflow rate for the scaler being between 30 mL / min and or 50 mL / min. Preferably, the default set operating value is close to the minimum value, such as for example 30 mL / min. The waterflow rate for the scaler is the same or different as the water flow rate in the powder gas jet unit. Especially, it is also intended to use the minimum value for the operating parameter being reset by the control unit.

[0028] For example, it is provided that a power of the scaler, i. e. the power being used for actuating the vibrational source being formed by piezo elements, is set to a value between 1.7 and 3.4 W. This operating value being set and predetermined, distinguishes from such values, which can be used in a boost mode having a power between 3.4 and 6.8 W.

[0029] According to another approach, the operating parameter concern a pressure of the gas for creating a powder gas mixture. For example, the normal pressure is between 1950 to 2150 mbar and in a boost mode there is an available pressure between 2800 and 3000 mbar. Preferably, the operating parameter is set to a value, being used in the normal operation mode, preferably have the lower minimum of the operation mode.

[0030] In particular, it is provided and intended that the reset is performed for a set of operating parameters including the operating parameter, which concerns a vibration mode of the scaler, the operating parameter, which concerns the pressure of the gas for creating the gas mixture and / or the operating parameter, which concerns the fluid pressure. A data set, being preferably stored in the control unit, comprises preferably the set of operating parameters to be reset, wherein the data set is automatically used for resetting all this value to establish the same status for the whole treatment device each time the resetting is triggered, for example by attaching the handpiece to the base station or in case of another triggering event.

[0031] It is also conceivable that the at least one parameter is reset in reaction to the trigger event and another parameter is reset in reaction to another trigger event. This allows an additional handling of the powder jet device by issuing on purpose certain trigger events to49512 PT-WO PM / SK © creating a certain and desired resetting of the at least one parameter or the another parameter.

[0032] Preferably, it is provided that the control unit is configured and determined such that the operating parameters are automatically selected in dependency on an operator and / or patient. This is a more personalized choice of operating parameter, which can increase the comfort for the patient and / or operator. For example, it is possible that the treatment device identifies the current patient and / or operator and sets the default values to a specific value being chosen for this operator and / or patient. As a consequence, it is for example possible to use a specific set of operating parameters as default operating parameters, if the patient is extremely sensitive to the scaler and the powder gas mixture. It is also possible to adapt it for example for children or older people, which might have other sensitivities to the different dental treatments.

[0033] Preferably, it is provided that the dental treatment device comprises a status signal element being configured and determined to inform the operator that during the treatment, whether the operating parameter has been modified. In particular, in the case of long-lasting treatments, the operator might forget that they already modified the operating parameters during the treatment. By the status signal element, such as a corresponding LED or light, the operator is advantageously informed about the modification. For example, it is conceivable that a light switches off as soon as the operating parameter, being previously reset by the dental treatment device, has been modified. As a consequence, the operator can easily turn back to the default set operating parameters to continue the procedure.

[0034] Furthermore, it is provided that dental treatment device has a powder chamber which is arranged exchangeable at the base station, wherein the control unit is configured to determine the operating parameters when the powder chamber is exchanged. Preferably, it is provided that the powder gas jet unit is configured to handle different types of powder chambers. These powder chambers can be exchanged with each other and preferably make different pressures necessary, which are generated within the powder chamber to provide the optimized powder gas mixture for a specific treatment. These powder chambers are part of a set of different powder chambers which can be exchanged by removing and attaching the powder chamber, respectively. The operating parameters might also be adapted to this exchange of the powder chamber. In other words, the operating parameters being used for the one powder chamber might differ from the operating parameters49512 PT-WO PM / SK © being reset for the second powder chamber. As a consequence, the control unit is configured and determined to store and handle different sets of operating parameters for resetting, in particular dependant on the powder chamber being attached to the base station.

[0035] Preferably, it is provided that the dental treatment device has an exchangeable tool tip, wherein the dental treatment device is configured and determined to set the operating parameters after exchanging the tool tip. In particular, it is possible to adapt the operating parameters, for example to the work status and / or type of tool tip which is attached to the powder chamber. This also guarantees a less dangerous treatment for the patient which considers all aspects of the used dental tool.

[0036] Preferably, it is provided that the dental treatment device is configured and determined to set the operating parameters when the handpiece performs a defined movement. For example, it is conceivable that the handpiece comprises an acceleration or orientation sensor, such as a MEMS-sensor. Such sensors are for example known from mobile phones which are used to identify the current orientation of the mobile phone. The same can be used in the handpiece to automatically reset to the default values. This for example allows that the operator can return to the default values or the operating parameters by a defined movement being reset by default. For example, by making a fast up and down movement or fast rotation it allows to reset the values. This significantly simplifies the treatment and especially simplifies the setting of the parameters.

[0037] Preferably, it is provided that the control unit integrated into the base station. Alternatively, it is also conceivable that the control unit is outside of the base station.

[0038] Another aspect of the present invention is the method of operating a dental treatment device according to the present invention, wherein the at least one operation parameter is set,

[0039] - when a handpiece is attached or removed from the base station and / or

[0040] - when the cleaning mode is performed and / or

[0041] - when the dental device is switched on and / or off.

[0042] All specifications and benefits being discussed and explained in context of the dental treatment device applies analogously for the method of operating the dental treatment device and vice versa.49512 PT-WO PM / SK © Another aspect of the present invention is an use of powder in the dental treatment device, in particular its powder chamber or in a scaler, in particular an ultrasonic scaler, according to the present invention. Another aspect of the present invention is an use of scaler tip in the dental treatment device according to the present invention. All benefits and specifications being discussed in context of the dental treatment device apply analogously to the use of the powder I scaler tip and vice versa. Preferably the powder has a grain size smaller than 25 pm. In particular the powder is for a subgingival or a supragingival treatment. This guarantees a smooth and comfortable treatment, in particular in case of a supragingival treatment. In particular the powder comprises glycin, erythritol and / or chlorhexidine digluconate. The use of such a powder is in particular of benefit, since it guarantees that a probability of a clogging or clumping is reduced, in particular by using the filter liquid from the network, in particular in the nozzle element, in particular if a filter system is used. Furthermore, the dental treatment device is optimized for the powder and the scaler tip, such that an establishment of benefits of the invention are in particular guaranteed by using the powder and / or scaler. In case of the scaler tip, the ejected irrigation fluid is optimized to the position of the pointed tip end of the scaler tip, in particular to support the removal in the treatment zone. Furthermore, analyzes of data can be evaluated in a more precise way since they are based on the experiences of those powders and / or scaler tips, which can be used in the dental treatment device. The dental treatment device is preferably distributed as EMS AIRFLOW Prohylaxis Master. In particular, the dental treatment device can inform an operator, whether the correct powder or scaler tip is used.

[0043] Wherever not already described explicitly, individual embodiments or their individual aspects and features can be combined or exchanged with one another without limiting or widening the scope of the described invention, whenever such a combination or exchange is meaningful and in the sense of this invention. Advantages which are described with respect to one embodiment of the present invention are, wherever applicable, also advantageous of other embodiments of the present invention.

[0044] In the drawings:

[0045] Fig. 1 shows a dental treatment device according to a first exemplary embodiment of the present invention in a perspective view and49512 PT-WO PM / SK O Fig. 2 shows a dental treatment device according to a first exemplary embodiment of the present invention in a schematic view.

[0046] In figure 1 a dental treatment 100 device according to a first exemplary embodiment of the present invention is illustrated. In particular, the dental treatment device 100 includes a powder gas jet unit 10 and / or a scaler 20. In particular, the dental treatment device 100 is a dental treatment device for dental prophylaxis and is in particular free of a tooth manipulating tool, such as a drill to remove parts of a tooth. The powder gas jet unit 10 is preferably used to provide a powder gas mixture stream to remove calculus, tartar and / or biofilms by an abrasive effect of the powder gas mixture hitting the surface of the tooth. In particular, it is provided that the powder gas jet unit 10 is configured to provide a stream of the powder gas mixture being surrounded by a fluid, in particular an irrigation fluid, which reduced the dusk formation in a targeted treatment zone, which is hit by the stream of the powder gas mixture. In particular, the powder gas jet unit comprises a handpiece 11 and a nozzle element 12. Preferably, the powder gas jet unit 10 is intended to perform different dental prophylaxis treatments, in particular a subgingival treatment on the one hand and a supragingival treatment on the other hand. Dependent on the intended treatment the nozzle element 12 might be modified, for example by exchanging the nozzle element 12 and / or by adding a nozzle tip to the nozzle element 12, the nozzle tip for example allowing to enter the periodontal pocket to treat a root of a tooth in proper manner without risking an injury of a patient.

[0047] For creating the powder gas mixture, the dental treatment device 100 comprises a powder chamber 13, which preferably is attached at an outside of the base station 30. Dependant on the intended treatment, a choice of powder and / or settings for creating the powder gas mixture can be changed. In particular, the powder chamber 13 is not only intended to accumulate and store powder, but also to generate the powder gas mixture inside the powder chamber 13. Therefore, the powder chamber 13 comprises a swirl section.

[0048] Preferably, the powder chamber 13 comprises a powder accumulation component which for example is formed by a conically shaped funnel, preferably having a step like inner course to avoid a bridge formation of the powder.

[0049] The powder chamber 13 furthermore comprises a gas inlet, preferably at a bottom side of the powder chamber 13, and a powder gas mixture outlet, being arranged preferably at the topside of the powder chamber 13. Preferably, the powder chamber 13 comprises a49512 PT-WO PM / SK © tube, in particular a Venturi tube, having a first front side facing the gas inlet and a second front side end, which terminates within the swirl section. The tube is preferably arranged within the powder accumulation component, in particular such that a space is generated between the gas inlet on the one hand and the first frontside end of the tube on the other hand. This allows that the gas streaming into a powder accumulation section forces powder, being provided by the powder accumulation component, to enter the tube at the first frontside end and to be accelerated to the second frontside end and being provided to the swirl section. After generating the powder gas mixture in the swirl section, the powder gas mixtures exits the powder chamber 13, preferably via an outlet channel being incorporated into a closure at the topside of the powder chamber 13.

[0050] In the embodiment being illustrated in figure 1, the powder chamber 13 and the dental treatment device 100 are configured such that the powder chamber 13 can be exchanged in a tool free manner. In particular, in the embodiment illustrated in figure 1, there is a clamping mechanism provided such that the powder chamber 13 is clamped between the clamping element 17 and the base station 30. The clamping element 17 furthermore comprises an internal channel to guide the powder gas mixture into the base station 30 to be provided to the handpiece 11 via a supply line 14. In the embodiment illustrated in figure 1 a supply line 14 is connected to the base station 30. However, it is also conceivable that the supply line 14 is directly connected to the powder chamber 13. It is also conceivable that the powder chamber 13 is just arranged on the topside of the base station 30 and being configured such that the powder gas mixture outlet and the gas inlet are arranged in a socket region of the powder chamber 13.

[0051] For switching between different treatments, it is preferably provided that there is a set of different powder chambers 13 which are specialized each for a certain dental treatment or are at least prepared by the operator for different treatment. As a result, it is possible just by choosing the powder chamber 13 and exchanging the powder chamber 13 to the one which is desired to modify the dental treatment system 100 and prepare it for a different dental treatment. For example, the different powder chamber 13 comprises different powders, which for example distinguish from each other in the grain size and / or type of the powders being used. Thus, it is possible to use the proper powder, especially for the subgingival treatment, which makes a softer abrasive effect necessary.

[0052] The dental treatment device 100 of figure 1 next to the powder gas jet unit 10 also comprises a scaler 20, being used to remove calculus and / or tartar. In particular, this scaler 2049512 PT-WO PM / SK O comprises a scaler tip, that means a tool tip 22, which can be exchangeable attached to a handpiece 21. The handpiece 21 is connected to the base station 30 preferably by a supply line 24, which preferably includes electronic control lines and / or an irrigation fluid line. In particular, the scaler 20 is an ultrasonic driven scaler. Such an ultrasound driven scaler preferably performs a vibration motion being initiated by an ultrasonic source being incorporated preferably inside the handpiece 21. Such an ultrasound source for example comprises piezo elements and is controlled via the electronic supply or control line.

[0053] The dental treatment device 100 furthermore includes a liquid tank 50, for example a water tank. In particular, it is intended that the liquid tank provides liquid both for the powder gas jet unit 10 to form the surrounding irrigation liquid for the powder gas mixture stream on the one hand and for the scaler tip to direct the irrigation fluid to the treatment zone of the scaler tip, i. e. tool tip 20.

[0054] In particular, it is also conceivable that the handpieces 11, 21 can be exchanged or are exchangeable attached to the supply lines 14, 24. Furthermore, the supply lines 14, 24 might be exchangeable connected to the base station 30 and / or to the powder chamber 13.

[0055] In addition, the dental treatment device 100 comprises a control unit 33 being configured and determined to control the operating parameters of the scaler 20 and / or powder gas jet unit 10. For example, it is necessary to adapt the pressure being provided to the powder chamber 13 to generate the intended powder gas mixture for the specific treatment. Furthermore, the vibration forces need to be adapted during the treatment, as well as the power of the ejected irrigation fluid for the scaler 20 and / or powder gas jet mixture 10.

[0056] Preferably, the dental treatment device 100 comprises a human machine interface which allows an operator to adjust operating parameters of the dental treatment device 100, preferably during the treatment. As a consequence, it is, for example, possible to increase or decrease the intensity or power of the ejected powder gas mixture stream, the ejected irrigation liquid and / or the vibration movement of the scaler tip 22, such for example with respect to its amplitude and / or frequency. For example, the human machine interface 35 is provided as a command button and / or a touch screen being incorporated into the base station 30. It is also conceivable that the human machine interface 35 is realized via a Bluetooth connection or a wireless connection between the base station 30 and a mobile49512 PT-WO PM / SK O receiver having a display to adapt the operating parameters, preferably during the dental treatment.

[0057] In figure 2 a more schematic illustration of a secondary exemplary embodiment of the present invention is illustrated. The second exemplary embodiment mainly corresponds to the one being presented in figure 1 but uses for example no clamping element 17 to attach the powder chamber 13 such that in this version the gas inlet and the powder gas mixture outlet are localized or arranged in the socket region of the powder chamber being attached to the topside of the base station, i. e. a corresponding coupling section being adapted to the gas inlet and powder gas mixture outlet incorporated into the socket. The socket preferably forms a single pieced element, which cannot further be divided without destroying it.

[0058] Preferably, the control unit 33 is configured and determined to reset at least one operating parameter at the dental treatment device 10 for a dental treatment after and / or prior to a treatment cycle. This guarantees that each time an operator starts the treatment cycle, the same conditions are given. As a result, the operator does not need to check firstly whether the last stored parameters might cause operation modus which is dangerous for a patient. For example, it might be crucial to avoid that the patient does not experience the power of the powder gas jet unit for the supragingival treatment when the operator starts a subgingival treatment. This might damage the root of the tooth. If the operator forgot the last status or parameter and they just start the next treatment cycle, this might be a risk for an unintended misuse of the dental treatment device 100. At least the reset to the default values of the operating parameters or the at least one operating parameter makes an additional test prior to the treatment cycle superfluous or redundant. This is a different approach compared to the prior art which has a control unit 33 which does not modify the operating parameters during the or between two treatment cycles.

[0059] For triggering a reset of at least one parameter or several parameters or all parameters, a certain configuration or handling might be useful. For example, it is conceivable that the handpieces can be attached to the base station 30, in particular to specific holding elements 19, 29. These holding elements 19, 29 are for example arranged at the lateral sides of the base station 30 and are used to carry the handpiece 11, 21 during a non-treatment mode. After using the scaler handpiece 21 and / or the powder gas jet unit handpiece 11 , the operator for example clips or hangs the handpiece 11, ,21 to the base station 30. Pref-49512 PT-WO PM / SK © erably, it is provided that the control unit 33 is configured and determined to reset the operation parameters, when the connection between the handpiece 11, 21 and the base station 30, in particular to the holding element 19, 29, is established and / or released. For such a trigger event, the holding element 19, 29 and / or the base station 30 might comprise a weight sensor or another detector, which identifies the presence or the non-pres-ence of the handpiece 11, 21 at the holding element 19, 29. As a result, it is possible for the operator to reset the default values just by putting the handpiece 11, 21 back to the holding element 19, 29. This is also beneficial, since it makes no complicated resetting at the machine interface necessary and instead automatically the default values are reset. This can be used by the operator to return fast to the parameters being stored as resetting values.

[0060] Alternatively and / or additionally, the control unit 33 is configured and determined to set the operating parameter for the dental treatment during or subsequent to a cleaning mode. Such cleaning modes are preferably performed on a regular basis and for example repeated during a non-treatment mode, preferably in each non-treatment mode between two treatment cycles. These cleaning modes are intended to provide a clean powder gas device 10 and / or scaler 20, preferably for the next patient, such that it is guaranteed that for each start of the treatment cycle the patient will experience the proper settings. Furthermore, it helps the operator to be informed that the cleaning mode has been performed.

[0061] Additionally and / or alternatively, it is provided that the control unit 33 is configured and determined to reset the operating parameters when the dental treatment device 100 is switched on and / or off. Thus, it can also be guaranteed that the proper settings are always in place if you restart the dental treatment device 100.

[0062] Preferably, the operating parameters are different from zero. As a result, it is also not necessary to change the operating parameter after a start of the dental treatment device 100 and instead the operator can start the treatment right away.

[0063] Preferably, the operating parameter concerns a fluid pressure, in particular of the liquid being used for irrigation for the powder gas jet unit 10 and / or the scaler 20. Another operating parameter might be the pressure being used for generating the powder gas mixture in the powder chamber 13 and / or a power level of the vibration of this scaler tool tip. In particular, it is provided that the control unit 33 is configured and determined to reset a set49512 PT-WO PM / SK © of operating parameters such that for the scaler 20 and the powder gas jet unit 20 one defined operation is automatically established or guaranteed, when the operator starts its dental treatment cycle.

[0064] Reference numerals:

[0065] 10 powder gas jet unit

[0066] 11 handpiece

[0067] 12 nozzle element

[0068] 13 powder chamber

[0069] 14 supply line

[0070] 17 clamping element

[0071] 19 holding element

[0072] 20 scaler

[0073] 21 handpiece

[0074] 22 tool tip

[0075] 24 supply line

[0076] 29 holding element

[0077] 30 base station

[0078] 33 control unit

[0079] 35 human machine interface

[0080] 50 water tank

[0081] 100 dental treatment device

Claims

49512 PT-WO PM / SK ©Claims1. A dental treatment device (100) including a powder gas jet unit (10) and / or a scaler (20), wherein the dental treatment device (100) is configured to operate a handpiece (11, 21) and comprises a base station (30), wherein the dental treatment device (100) comprises a control unit (33) being configured and determined to reset at least one operating parameter at the dental treatment device (100) for a dental treatment, after and / or prior to a treatment cycle.

2. The dental treatment device (100) according to claim 1, wherein the handpiece (11, 21) and the base station (30) are connectable or connected to each other in a non-treatment mode, wherein the control unit (33) is configured and determined to reset the at least one operating parameter, when the connection is established and / or released.

3. The dental treatment device (100) according to one of the preceding claims, wherein the control unit (33) is configured and determined to reset the at least one operating parameter for the dental treatment during or subsequent to a cleaning mode.

4. The dental treatment device (100) according to one of the preceding claims, wherein the control unit (33) is configured and determined to reset the at least one operating parameter, when the dental treatment device (100) is switched on and / or switched off.

5. The dental treatment device (100) according to one of the preceding claims, wherein the at least one operating parameter concerns a fluid pressure.

6. The dental treatment device (100) according to one the preceding claims, wherein the at least one operating parameter concerns a vibration mode of the scaler (20).

7. The dental treatment device (100) according to one of the preceding claims, wherein the at least one operating parameter concerns a pressure of the gas for creating a powder gas mixture49512 PT-WO PM / SK ©8. The dental treatment device (100) according to one of the preceding claims, wherein the control unit (33) is configured and determined to adapt the at least one operating parameter.

9. The dental treatment device (100) according to one of the preceding claims, wherein the dental treatment device (100) comprises a status signal element being configured and determined to inform the operator that during treatment the operating at least one operating parameter has been modified.

10. The dental treatment device (100) according to one of the preceding claims, wherein the dental treatment device (100) has a powder chamber (13), which is arranged exchangeable at the base station (30), wherein the control unit (33) is configured and determined to reset the at least one operating parameter, when the powder chamber (13) is exchanged.

11. The dental treatment device (100) according to one of the preceding claims, wherein the dental treatment device (100) has an exchangeable tool tip (12, 22), wherein the dental treatment device (100) is configured and determined to set the at least one operating parameter after exchanging the tool tip (12, 22).

12. The dental treatment device (100) according to one of the preceding, wherein the dental treatment device (100) is configured and determined to set the at least one operating parameter when the handpiece (11, 21) performs a defined movement.

13. The dental treatment device (100) according to one of the preceding claims, wherein the control unit (33) is integrated into the base station (30).

14. A method of operating a dental treatment device (100) according to one of the preceding claims, wherein at least one operating parameter is set,- when a handpiece (11, 21) is attached or removed from a base station (30), and / or- when a cleaning mode is performed and / orwhen the dental treatment device (100) is switched on and / or off.49512 PT-WO PM / SK © 15. A Use of a powder and / or a scaler tip in a dental treatment device according to one of the claims 1 to 13.

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