Drilling template for performing an implant drilling for a dental implant, as well as methods for the virtual design and manufacture of the drilling template.

Abstract

Drilling template (1) for carrying out an implant drilling for a dental implant, with a through-hole (2) and at least one breakthrough (3, 3'), wherein the drilling template (1) is designed to rest against or be attached to a jaw, palate and / or one or more teeth and is at least partially adapted to the geometry of the jaw, palate and / or one or more teeth, wherein the drilling template (1) has an inner wall (1a) oriented towards the oral cavity and an outer wall (1b) oriented towards the cheek and outwards in the tooth area, wherein the through-opening (2) is designed to guide a drill, in particular a dental implant drill, and / or to insert a guide sleeve for a drill, wherein a reinforcement area (2a) is formed around the through-opening (2), and wherein at least one opening (3, 3') is designed for the passage of a fluid, the drilling template (1) has at least one fluid-carrying element (4, 8), characterized in that a cavity (5) is formed below the reinforcement area (2a) by the inner wall (1a) and the outer wall (1b), which has a fluidically effective connection to the at least one opening (3, 3'), wherein the inner wall (1a) and the outer wall (1b) enclose the cavity (5), wherein the inner and outer walls (1a; 1b) enclosing the cavity (5) are formed to form the cavity (5) open towards the gingiva up to a gingival surface and seal the cavity (5) with end faces of the inner and outer walls (1a; 1b) forming the cavity (5) against the pharyngeal space.

Description

Technical field

[0001] The invention relates to a drilling template for performing an implant drilling for a dental implant, comprising a through-opening and at least one perforation. For this purpose, the drilling template is designed or can be positioned against a jaw, palate, and / or one or more teeth and is at least partially adapted to the geometry of the jaw, palate, and / or one or more teeth. The through-opening is designed to guide a drill, in particular a dental implant drill, and / or to insert a guide sleeve for a drill, and the perforation is designed to allow the passage of a fluid.

[0002] Furthermore, the invention relates to a method for the virtual design and manufacture of a drilling template for carrying out an implant drilling for a dental implant. RELATED STATE OF THE ART

[0003] Various drilling templates and methods for manufacturing a drilling template are already known from the state of the art in the field of dental implantology.

[0004] Essentially, these procedures are based on the fact that the anatomical conditions, in particular the jaw or jaw surface, especially also the palate and / or one or more teeth of a patient are captured three-dimensionally (3D) using a negative impression or with an imaging computer-aided procedure.

[0005] Furthermore, digital three-dimensional impression techniques using intraoral 3D scanners are known, with all currently available systems employing optical scanning technologies. For example, systems based on triangulation or confocal imaging are known. Other physical scanning methods are also under discussion, such as ultrasound, magnetic resonance imaging (MRI), computed tomography (CT), or digital volume tomography (DVT).

[0006] The three-dimensional imaging procedure captures, in particular, at least parts of the patient's oral cavity and processes them into a data set, recording the aforementioned anatomical features and the position and orientation of any existing implant in relation to the oral cavity, or the positions and orientations of the existing implant(s) in relation to the oral cavity and / or to each other.

[0007] Based on this data acquisition, and especially the resulting data set, the placement of the implants in the patient's jaw can then be planned using three-dimensional (3D) visualization. Implant planning for one or more implants is a prerequisite for determining the required access opening in the surgical guide, which still needs to be modeled. This is usually done with visualization software; preferably, a CAD / CAM process (Computer-Aided Design and Computer-Aided Manufacturing) is used.

[0008] Subsequently, a drilling pattern or a corresponding drilling template is also designed virtually and manufactured, in particular using a generic manufacturing process such as laser sintering, exemplified in EP 1021 997 A1, or stereolithography, exemplified in WO 97 / 29901 A1. If suitable materials for dental medical devices are used, there is no reason to criticize the aforementioned generic manufacturing processes.

[0009] The previously recorded anatomical conditions, as well as the position and orientation of any existing implant, or the resulting data set, includes, among other data, the positional data of an implant yet to be placed, which, for example, are related to different distances, areas, grids, Cartesian and / or angular coordinates, and are preferably stored in association with this recording.

[0010] As already mentioned, the position and orientation of the implant are prerequisites for the design of the virtual model of the drilling template. One or more implants are incorporated into the drilling template with a through-hole. This through-hole is intended for guiding a drill, in particular a dental implant drill, and / or for inserting a guide sleeve for a drill. The drill is used to create a hole in the patient's jawbone, and an implant is then inserted into the resulting hole. This procedure is already known from DE 10 2016 004 641 A1.

[0011] To ensure secure anchoring and healing of the implant in the jaw or jawbone, it is necessary to perform the drilling process to prepare the implant bed without a damaging temperature increase in the bone, which can be caused by drilling friction.

[0012] In order to avoid an unacceptably high temperature increase, a coolant, in particular water or a saline solution, is sprayed onto the drill from the side, or guided through the drill shaft as directly as possible onto the contact surface between the drill and the bone, as proposed in DE 100 24 724 A1.

[0013] However, the necessary cooling is only available during drilling operations, and the cooling effect is lost when the drilling instrument and thus also the drill bit has to be removed from the drilling template, for example to remove saliva, blood and abrasion particles from the borehole or when changing the drill bit itself.

[0014] From EP 0 774 238 A1, a drilling template is known which is intended to improve cooling and the removal of saliva, blood, and abrasive particles during drilling operations. For this purpose, the drilling template has a lateral recess which also opens up the drill channel laterally, thus forming an outlet for introduced coolant, as well as saliva, blood, and abrasive particles.

[0015] However, the current state of the art presents the problem that the coolant, along with saliva, blood, and abrasion particles, accumulates in the patient's throat. The resulting swallowing reflexes, and sometimes even a gag reflex, are highly unpleasant for both the patient and the practitioner, and impair precise procedure during treatment.

[0016] The treatment, especially the drilling process, often has to be interrupted to suction out the coolant along with saliva, blood and abrasion particles, which prolongs the duration of the treatment and consequently increases the costs.

[0017] In most cases, the extraction process is carried out by auxiliary personnel using so-called saliva ejectors which are connected to extraction systems.

[0018] WO 2015 / 172 174 A2 describes a surgical bone drilling device comprising a drill connected to a drive, a coolant reservoir, at least one pump for conveying the coolant, a first line for supplying the coolant from the reservoir to the inside of the drill, and a second line for supplying the coolant from the reservoir to the outside of the drill, as well as an angled handpiece, a drilling template, and a cooling method for such a bone drilling device. To improve the cooling effect, a measuring device for recording the drilling depth of the drill is provided. This measuring device is connected to a control device for regulating the coolant flow, so that the amount of coolant in the first line and in the second line can be regulated depending on the drilling depth of the drill.

[0019] DE 10 2010 008 702 A1 describes a method for manufacturing a drilling template for inserting implantological boreholes and a drilling template manufactured according to this method.

[0020] WO 2018 / 083289 A2 describes a device for guiding a drill used for surgery, comprising a borehole for receiving a rotating drill and a device for cooling the drill in the form of a cooling chamber, which is substantially adjacent to the borehole and through which the rotating drill is to pass, wherein the cooling chamber comprises an inlet pipe for injecting a heat transfer fluid into the cooling chamber and at least one outlet pipe for removing the heat transfer fluid from the cooling chamber.

[0021] It is therefore an object of the invention to provide a drilling template with improved cooling.

[0022] Furthermore, it is an object of the invention to provide a method by which a virtual design and the production of a drilling template can be carried out. Disclosure of the invention

[0023] The previously outlined problem is solved in each case using the features of the independent patent claims.

[0024] Because the drilling template is designed to have a fluid-carrying element, continuous suction can be performed, preventing or at least reducing the accumulation of coolant along with saliva, blood, and abrasion particles in the patient's pharynx.

[0025] Furthermore, the suction creates a permanently applied negative pressure between the drilling template and the jaw or palate, which gives the drilling template additional adhesion to the jaw or palate and thus ensures that it remains securely in the intended position on the patient's jaw, even without manual fixation by the practitioner.

[0026] Furthermore, several fluid-carrying elements may be provided to enhance the suction effect and / or adhesion.

[0027] Furthermore, a fluid-carrying element may also be provided for introducing a fluid into the drilling template, particularly essentially in the vicinity of the implant bed or the drill hole.

[0028] This ensures uninterrupted cooling of the implant bed without a traumatic temperature increase in the bone, even if there is no coolant flow coupled to the drilling instrument or if the drill has been removed from the drilling template.

[0029] As a coolant, a gaseous fluid can also be introduced via the additional fluid-carrying element, which has a pain-relieving effect on the patient and also prevents an accumulation of further coolant in the throat.

[0030] Furthermore, the position and orientation of the through-hole and the penetration and the fluid-carrying element, in particular its course, can be taken into account in the virtual design and manufacture of the drilling template, taking into account the position and orientation of the implant as defined in the virtual implant planning.

[0031] The disadvantages mentioned at the beginning are therefore avoided and corresponding advantages are achieved.

[0032] There are now numerous possibilities for advantageously designing and further developing the drilling template or the method according to the invention. Reference may first be made to the dependent claims.

[0033] The dependent claims each relate to preferred embodiments.

[0034] In one embodiment of the drilling template, the fluid-carrying element has an inlet and an outlet, whereby the fluid-carrying element is fluidically connected to the drilling opening via the inlet, or can be connected to it, thereby allowing fluid to be supplied to or drawn away from the immediate vicinity of the implant bed. Furthermore, drilling debris such as bone fragments can also be removed, in particular by suction.

[0035] Additionally, it is advantageous if the opening has a specific orientation so that it can be easily molded onto the fluid-carrying element or the fluid-carrying element can be easily passed through the opening without forming a constriction.

[0036] To further improve patient comfort, the outlet of the fluid-carrying element is essentially oriented towards the mouth opening (labial) or, alternatively, towards the cheek (buccal). This is particularly space-saving and thus also allows more room for guiding the drilling instrument.

[0037] Because the fluid-carrying element is tubular or has a flat rectangular cross-section, it can be easily molded onto one of the walls of the drilling template or, alternatively, be an integral part of the template. A particularly preferred configuration is that the fluid-carrying element is partially or completely located below the surface or wall of the drilling template, and thus not visible or not completely visible. For this purpose, the fluid-carrying element can run in / on the buccal (vestibular) outer wall, which is oriented outwards in the tooth region, as well as in / on the inner wall, which is oriented towards the oral cavity (inwards in the tooth region), and also on the occlusal (occlusal) upper wall, which is oriented towards the final bite line. The fluid-carrying element is at least partially located on and / or within one of the walls, or is integrally formed with one of the walls.

[0038] According to the invention, the drilling template has a cavity which is enclosed or formed by the outer and inner walls. For this purpose, the inner and outer walls extend to the gingiva (gums) and seal the cavity against the pharynx. Since the cavity is also fluidically connected to the through-hole, a kind of "collection chamber" is provided within the drilling template. This collection chamber primarily holds drilling debris, such as bone fragments, if these are too large to be suctioned out and would consequently clog the fluid-carrying element. To prevent large drilling debris from entering the fluid-carrying element in the first place, it is conceivable to arrange a filter or a grid-like element between the inlet of the fluid-carrying element and the through-hole.

[0039] To achieve sufficient suction at the inlet of the fluid-carrying element, a connection for extraction via a standard dental suction system is provided at the outlet of the fluid-carrying element. The connection or connection geometry of the external suction system can be considered during the virtual design phase for the production of the drilling template, in particular by selecting from a catalog or library, or from a database of manufacturer-specific connection geometries stored in the CAD / CAM software.

[0040] The initially existing virtual design of the drilling template provides at least one inlet coordinate K for calculating or defining the fluid-shaped element. E of the inlet, and an exit coordinate K A , of the outlet, as well as a section path S, where the section path S is the inlet coordinate K E and the exit coordinate K AThe cutting path S connects the elements linearly. In particular, the cutting path S is designed as a so-called spline. Preferably, the cutting path, and thus ultimately the fluid-carrying element, is automatically calculated and integrated into the design of the drilling template. For this purpose, the cutting path S, or the path itself, is taken into account, considering the position, location, and orientation of the implant as defined in the virtual implant planning. The insertion direction of the implant can also be considered. Furthermore, so-called "viewing windows," "webs," and the "clear opening" (inner diameter) are also taken into account, especially in the curved areas of the fluid-carrying element. Additional coordinates for creating / calculating the cutting path S can also be manually inserted, or the cutting path S, or the path of the fluid-carrying element, can be designed entirely manually.Preferably, at least the inlet coordinate K is defined on one or more walls or on the surface of the virtual design. E and the exit coordinate K A selected, where the inlet coordinate K E also represents part of a breakthrough. This means that the coordinates that map the breakthrough also include at least the inlet coordinate K. E This includes the following: Subsequently, a CAD / CAM system calculates or creates the cutting path S or the path of the fluid-carrying element based on the selected coordinates. This makes the subsequent manufacturing process using a generic method, such as 3D printing, particularly fast and cost-effective.

[0041] In a further embodiment, which can also be manufactured using a generic manufacturing process, the fluid-carrying element has a branch, in particular several branches, each branch having a corresponding inlet. The fluid-carrying element can also have more than one outlet. Furthermore, the fluid-carrying element can also have a variable inner diameter, which takes into account the number of branches and the associated pressure loss. This allows a fluid and / or a liquid and / or a solid drilling residue to be removed from different locations in the oral cavity, in particular from the implant bed or the cavity.

[0042] In a further embodiment, it is also possible to introduce a fluid into the drilling template, particularly near or directly to the implant bed or the borehole, by means of a further (second, third, or fourth) fluid-carrying element. This ensures continuous cooling and / or irrigation of the implant bed without requiring a fluid flow through the drilling instrument. Preferably, a gaseous fluid can be introduced near or directly to the implant bed or the borehole for this purpose.

[0043] In another version, the drilling template can also feature a so-called "bridge." The bridge is intended to structurally reinforce the drilling template itself and / or provide additional support against the patient's jaw. Advantageously, the bridge can also be designed as a fluid-carrying element, or the fluid-carrying element can be at least partially integrated into the bridge, further reinforcing the drilling template's structure.

[0044] In the following, several preferred embodiments of the invention will be explained in more detail with reference to the following drawing and the accompanying description. BRIEF DESCRIPTION OF THE FIGURES

[0045] The drawing shows: Fig. 1 in schematic three-dimensional representation the drilling template according to the invention, namely with a view of the orally oriented inner wall and the upper wall oriented to the final bite line (occlusal), and Fig. 2 in schematic three-dimensional representation the drilling template according to the invention from below, namely in particular with a view of the bearing surface, and Fig. 3 in schematic three-dimensional representation the drilling template according to the invention, namely from the front, and Fig. 4 in schematic three-dimensional representation the drilling template according to the invention, namely in perspective from the side with a further fluid-carrying element, and Fig. 5 an enlarged section of the in Fig. 4 drilling template shown from below, with a branch, and Fig. 6 a more schematic process to generate a virtual design of a drilling template according to the invention and / or to carry out the production of a drilling template according to the invention for carrying out an implant drilling for a dental implant. DESCRIPTION OF THE PREFERRED EXECUTION FORM

[0046] Before discussing the specific procedural steps in more detail, the following section will describe the process: Fig. 1. First, the drilling template 1 and its essential components will be discussed in more detail:

[0047] The Fig. Figure 1 shows a drilling template 1 for performing an implant drilling for a dental implant (not shown), with a through-opening 2 and at least one breakthrough 3 (not visible in the drawing, sa Fig. 2) The through-opening 2 is designed to guide a drill (not shown), in particular a dental impetate drill, and / or to insert a guide sleeve (not shown) for a drill. To ensure sufficient stability of the drilling template 1 during the drilling process, a reinforcement area 2a is provided around the through-opening 2. Preferably, the reinforcement area 2a is ring-shaped or cylindrical. It is also clearly visible that the drilling template 1 is designed or can be placed against a jaw, palate, and / or one or more teeth (not shown) and is at least partially adapted to the geometry of the jaw, palate, and / or one or more teeth. Accordingly, the bearing surface 1d (not visible in the illustration) is also Fig. 2) shaped to ensure a precise fit of the drilling template 1. The opening 3 is positioned below the reinforcement area 2a for the passage of a fluid, in particular for the extraction of a coolant together with saliva, blood, and abrasion particles, and is fluidically connected to a fluid-carrying element 4. For this purpose, the inlet 4a of the fluid-carrying element 4 is designed to seal around the opening 3 and is fluidically effective, or the fluid-carrying element 4 extends through the opening 3 and ends below the reinforcement area 2a, so that the inlet 4a is exposed there (sa Fig. 2) Depending on the orientation of the breakthrough 3, wherein the orientation is determined or calculated on the basis of a direction vector, in particular the direction vector is defined with at least one implant (reference) coordinate K IDetermined or calculated, the opening 3, and thus also the inlet 4a of the fluid-carrying element 4 surrounding the opening 3, can assume a fluidically optimized orientation. Furthermore, the fluid-carrying element 4 is depicted as tubular in this illustration. Alternatively, a flat rectangular cross-section is also conceivable. It is also clearly visible that the outlet 4b of the fluid-carrying element 4, which is essentially oriented or positioned towards the mouth opening (not shown) (labially), is intended for the connection of an external suction device (not shown) for the aspiration of a fluid and / or liquid and / or solid drilling residue. It is also evident that the drilling template 1 has an inner (oral) wall 1a oriented towards the oral cavity, an upper (occlusal) wall 1c oriented towards the final bite line, and an outer (vestibular) wall 1b oriented towards the cheek and outwards in the tooth area (sa). Fig. 2), wherein the fluid-carrying element 4 is provided at least partially on and / or in the inner wall 1a, or is formed integrally with the inner wall 1a, as well as the outer wall 1b, as well as the upper wall 1c.

[0048] The Fig. Figure 2 now shows a schematic three-dimensional representation of the drilling template 1 according to the invention. Fig. 1 from below, namely with a view of the walls 1a, 1b, 1c (sa Fig. 1) Enclosed bearing surface 1d. It is particularly well illustrated that the outer wall 1b and inner wall 1a enclose a cavity 5 (dotted line), wherein the cavity 5 is fluidically connected to the through-opening 2 and is formed at least partially below the reinforcement area 2a. It is also evident that the cavity 5 has a fluidically effective connection to the opening 3 and thus also to the inlet 4a. It is also conceivable that a filter or a grid-like element (not shown) is arranged between the inlet 4a of the fluid-carrying element 4 and the opening 3 to prevent bone fragments from penetrating the fluid-carrying element 4.

[0049] In this illustration, outlet 4b is also oriented primarily towards the mouth opening (not visible) (labially). The labial orientation of outlet 4b is further illustrated in the Fig. Figure 3 is shown. Here is the drilling template made of Fig. 1 in a schematic three-dimensional representation, namely from a front view. An orientation towards the mouth opening also simplifies the connection of a suction unit (not shown). The fluid-carrying element 4 is also clearly visible from the inner wall 1a (not shown, sa). Fig. 1), extends over the final bite line or the (occlusal) upper wall 1c aligned with it, to the vestibular, especially labial, outwardly oriented outer wall 1b.

[0050] In the Fig. Figure 4 is a schematic three-dimensional representation of the drilling template 1 according to the invention. Fig. 1 and Fig. Figure 2 shows a further fluid-carrying element 8. Like the fluid-carrying element 4, the fluid-carrying element 8 includes an inlet 8a, which is formed around a through-hole, namely the through-hole 3', in a sealing and fluidically effective manner, or the fluid-carrying element 8 extends through the through-hole 3' and ends below the reinforcement area 2a, so that the inlet 8a is exposed there. Like the through-hole 3, the through-hole 3' also has a predetermined orientation.

[0051] Furthermore, the fluid-carrying element 8 is also depicted as tubular in this illustration. Alternatively, a flat rectangular cross-section is also conceivable. It is also clearly visible that the outlet 8b of the fluid-carrying element 8 is essentially oriented or positioned (labially) towards the mouth opening (not shown) and is also provided for the connection of an external suction device (not shown) for the extraction of a fluid and / or liquid and / or solid drilling residue. Various adapters for a suction unit are conceivable for connecting the outlets 4a and 8a. It is clearly recognizable that the fluid-carrying element 8 is formed at least partially on and / or in the outer wall 1b. Like the inlet 4a, the inlet 8a is positioned below the reinforcement area 2a and is fluidically connected or connectable to the cavity 5 via the opening 3'.It is also apparent that a viewing window 7 is present for optically checking the position in the drilling template 1, with the course of the fluid-carrying element taking the position of the viewing window 7 into account. A bridge 6 is also visible, which contributes to the structural reinforcement of the drilling template and can also be designed to form additional bearing surfaces 1d. It is also conceivable that the fluid-carrying element 4 is an integral part of the bridge 6, whereby the fluid-carrying element 4 can also run completely within the bridge 6. Alternatively, the fluid-carrying element 8 can also be provided for the introduction of a fluid, in particular a gaseous fluid. This ensures permanent or uninterrupted cooling of the implant bed without a significant, and especially a traumatic, temperature increase in the bone, even if there is no coolant flow coupled to the drilling instrument.the drill bit was removed from the drilling template.

[0052] The Fig. Figure 5 now shows a preferred embodiment of the in Fig. The drilling template 1 shown in Figure 4 illustrates this. In particular, an enlarged partial view around the reinforcement area 2a of the through-hole 2 is sketched here, viewed from below. To allow a view of the fluid-carrying elements 4 and 8, which are partially located in or integrated into the drilling template 1, the outer wall 1a and inner wall 1c, as well as the bearing surface 1d, have been partially broken open or cut away. A cavity 5 (dashed line) is provided below the reinforcement area 2a.

[0053] The essential course of the fluid-carrying element 4 and 8 within the drilling template 1 is now clearly visible in the broken view. In particular, it is now also visible that the fluid-carrying element 4 has a branch 9.

[0054] The branching 9 is designed relatively simply by dividing the fluid-carrying element 4, in particular the inlet 4a, into two extensions 10a and 10b arranged within the reinforcement area 2a. It is intended that the coolant, along with saliva, blood, and wear particles, is aspirated via the extensions 10a and 10b. For this purpose, the extensions 10a and 10b are open to the cavity 5 located below the reinforcement area 2a, thus forming an annular space. The annular space is therefore also positioned downstream of the opening 3 in the direction of flow, with the opening being sealed by the fluid-carrying element and thus also by the cavity 5, which is fluidly connected to the through-opening. In particular, the area around cavity 5, with its contact surface 1d, rests fluid-tight on the patient's jaw, especially on the gingiva.

[0055] The following refers to the Fig. 1 to Fig. 5 and on the Fig. 6. The corresponding procedural steps are described in more detail:

[0056] First, it is crucial for the drilling template 1 and the procedure that the drilling template has a fluid-carrying element 4. The path of this fluid-carrying element 4, when generating the virtual design of the drilling template 1, takes into account the position and orientation of the implant as defined in the virtual implant planning. Furthermore, the position and orientation of so-called bridges 6 and viewing windows 7 can also be considered. This enables targeted suction, which can also contribute to the structural reinforcement of the drilling template.

[0057] In the design of the procedure for the virtual design and fabrication of a drilling template 1 for performing an implant drilling for a dental implant, a virtual implant plan, in particular a 3D implant plan, is first provided in step 101. Subsequently, a design of a drilling template 1 is generated in step 102, taking into account, in particular, the position and orientation of the through-hole 2 and the opening 3 and the fluid-carrying element 4, especially their course, considering the position and orientation of the implant defined in the virtual implant plan. The position and orientation of one or more viewing windows 7 and one or more bars 6 can also be taken into account (sa Fig. 4).

[0058] The method according to the invention can further comprise the following process steps, wherein, in particular, in step 201, the virtual design of the drilling template 1 is proposed to a user for authentication, whereby the user confirms the correctness of the design again before a digital data set of the virtual drilling template is generated, which is then transferred to a device to generate a physical model of the drilling template 1. Preferably, the physical model of the drilling template 1 is produced using a generic method, in particular a 3D printing method. Alternatively, the user can also reject the proposal (step 202) in order to possibly make further changes to the virtual design of the drilling template 1, in particular the position and orientation of the through-hole and the through-hole and the fluid-carrying element, especially the path of the fluid-carrying element.

[0059] The path of the fluid-carrying element 4 (or 8) can be easily defined as a design using the following procedure steps, whereby step 301 calculates a connecting line V1 which has a predetermined inlet coordinate K E of the entrance and a predetermined exit coordinate K A of the outlet. Furthermore, in step 302, a connecting line V2 is analogously constructed based on a predetermined inlet coordinate K. E of the inlet and an implant (reference) coordinate K IIn step 303, a plane E1, which includes at least the connecting lines V1 and V2, can now be calculated, defined, or specified. In step 304, the intersection S of plane E1 with the outer wall and / or inner wall and / or upper wall of the drilling template is determined or calculated, and in step 305, a fluid-carrying element 4 is generated around the intersection S based on this. The fluid-carrying element can be tubular or have a flat rectangular cross-section. It is also conceivable that the fluid-carrying element 4 is simply formed on one of the walls of the drilling template or, alternatively, is an integral part of the drilling template 1. As already explained, process step 201 can also be carried out again here, whereby the previously generated or...A modified virtual model is proposed for authentication, requiring the user to reconfirm the design's accuracy before a digital dataset of the virtual drilling template is generated. This dataset is then ultimately transferred to a device to create a physical model. Alternatively, the user can reject the proposal (step 202) to make changes to the virtual design of drilling template 1. Alternatively, the cutting path S can also be determined, as described in process step 401, by defining individual path points P. i on the surface of the virtual design of the drilling template 1, in particular the inlet coordinate K E of the inlet and outlet coordinate K A of the outlet, at least partially specified. In process step 402, individual connecting lines V are then i between the points P igenerated, whereby the connecting lines V iThe cutting path S is projected onto the surface of the virtual design of the drilling template 1. Based on this, a fluid-carrying element 4 is then generated around the cutting path S in process step 403. The fluid-carrying element 4 can be tubular or have a flat rectangular cross-section. It is also conceivable that the fluid-carrying element 4 is simply formed on one of the walls of the drilling template or, alternatively, is an integral part of the virtual drilling template 1. Process step 201 can also be carried out again here, whereby the previously generated or...A modified virtual model of drilling template 1 is proposed for authentication, requiring the user to reconfirm the design's correctness before a digital dataset of the virtual drilling template is generated. This dataset is then transferred to a device to create a physical model of drilling template 1. Alternatively, the user can reject the proposal (step 202) to make changes to the virtual design of drilling template 1. Finally, in process step 501, at least one digital dataset of the virtual drilling template 1 is generated, and based on this dataset, a physical drilling template is manufactured in process step 502 using an additive manufacturing process, preferably 3D printing.

[0060] As a result, the disadvantages mentioned at the beginning have been avoided and a multitude of advantages have been realized. Reference symbol list 1 drilling template 1a Inner wall oriented towards the inside of the mouth (orally) 1b cheek-oriented (vestibular) outer wall 1c upper wall aligned with the final bite line (occlusal) 1d contact surface 2. Through opening 2a Amplification area 3 Breakthrough 4 fluid-carrying element 4a Entrance 4b Outlet 5-cavity 6 Bridge 7 windows 8 fluid-carrying element 8a Entrance 8b Outlet 9 branching 10a, 10b extension

Claims

[1] Drilling template (1) for carrying out an implant drilling for a dental implant, with a through-hole (2) and at least one breakthrough (3, 3'), wherein the drilling template (1) is designed to rest against or be attached to a jaw, palate and / or one or more teeth and is at least partially adapted to the geometry of the jaw, palate and / or one or more teeth, wherein the drilling template (1) has an inner wall (1a) oriented towards the oral cavity and an outer wall (1b) oriented towards the cheek and outwards in the tooth area, wherein the through-opening (2) is designed to guide a drill, in particular a dental implant drill, and / or to insert a guide sleeve for a drill, wherein a reinforcement area (2a) is formed around the through-opening (2), and wherein at least one opening (3, 3') is designed for the passage of a fluid, the drilling template (1) has at least one fluid-carrying element (4, 8), characterized by , that below the reinforcement area (2a) a cavity (5) is formed by the inner wall (1a) and the outer wall (1b), which has a fluidically effective connection to the at least one opening (3, 3'), wherein the inner wall (1a) and the outer wall (1b) enclose the cavity (5), wherein the inner and outer walls (1a; 1b) enclosing the cavity (5) are formed to form the cavity (5) open towards the gingiva up to a gingival surface and seal the cavity (5) with end faces of the inner and outer walls (1a; 1b) forming the cavity (5) against the pharyngeal space. [2] Drilling template (1) according to claim 1, characterized by, that the at least one fluid-carrying element (4, 8) has an inlet (4a, 8a) and an outlet (4b, 8b), wherein the at least one fluid-carrying element (4, 8) is fluidically connected to the at least one opening (3, 3') through the inlet (4a, 8a). [3] Drilling template (1) according to one of claims 1 to 2, characterized by , that the outlet (4b, 8b) of the fluid-carrying element is oriented essentially towards the mouth opening (labial) or towards the cheek (buccal). [4] Drilling template (1) according to one of claims 1 to 3, characterized by , that at least one fluid-carrying element (4, 8) is tubular or has a flat rectangular cross-section. [5] Drilling template (1) according to any one of claims 1 to 4, characterized by , that at least one fluid-carrying element (4, 8) is formed at least partially on and / or in the outer wall (1b). [6] Drilling template (1) according to any one of claims 1 to 5, characterized by, that at least one fluid-carrying element (4, 8) is formed at least partially on and / or in the inner wall (1a). [7] Drilling template (1) according to any one of claims 1 to 6, characterized by , that the drilling template (1) has an upper wall (1c) oriented towards the final bite line (occlusal), wherein the at least one fluid-carrying element (4, 8) is formed at least partially on and / or in the upper wall (1c). [8] Drilling template (1) according to any one of claims 1 to 7, characterized by , that the at least one fluid-carrying element (4, 8) is formed at least partially following the course of the outer wall (1b) and / or inner wall (1a) and / or upper wall (1c). [9] Drilling template (1) according to any one of claims 1 to 8, characterized by, that the at least one fluid-carrying element (4, 8) is formed at least partially integrally with the outer wall (1b) and / or inner wall (1a) and / or upper wall (1c). [10] Drilling template (1) according to any one of claims 1 to 9, characterized by , that the cavity (5) is fluidically connected to the through-opening (2). [11] Drilling template (1) according to any one of claims 1 to 10, characterized by , that a filter or a grid-like element is arranged between the inlet (4a, 8a) of the fluid-carrying element (4) and the breakthrough. [12] Drilling template (1) according to any one of claims 1 to 11, characterized by , that at least one fluid-carrying element (4, 8) is designed to extract liquid and / or solid drilling residue. [13] Drilling template (1) according to any one of claims 1 to 12, characterized by, that means for connection for the extraction of a fluid and / or a liquid and / or solid drilling residue are provided at the outlet (4b, 8b) of the fluid-carrying element (4, 8). [14] Drilling template (1) according to any one of claims 1 to 13, characterized by , that at least one fluid-carrying element (4, 8) has an inlet coordinate K E of the inlet (4a, 8a), and an exit coordinate K A of the outlet (4b, 8b), and has a section path S, where the section path S is the inlet coordinate K E and the exit coordinate K A connects them in a linear fashion. [15] Drilling template (1) according to any one of claims 1 to 14, characterized by , that the at least one fluid-carrying element (4, 8) has a branch (9), in particular several branches. [16] Drilling template (1) according to any one of claims 1 to 15, characterized by, that the drilling template (1) has a web (6), wherein the at least one fluid-carrying element (4, 8) is at least partially formed as an integral part of the web (6). [17] Drilling template (1) according to any one of claims 1 to 16, characterized by , that the drilling template (1) has a further fluid-carrying element (4, 8), wherein the further fluid-carrying element (4, 8) is designed for introducing a fluid, in particular a gaseous fluid. [18] Method for the virtual design and manufacture of a drilling template (1) for carrying out an implant drilling for a dental implant according to any one of the preceding claims 1 to 17, comprising the following method steps: - Providing virtual implant planning, in particular 3D implant planning, - Generating a virtual design of a drilling template (1), wherein the position and orientation of the through-hole (2), the outer wall (1b), the inner wall (1a), the cavity (5) below the reinforcement area (2a) of the through-hole (2), the at least one opening (3, 3') and the fluid-carrying element (4, 8), in particular the course, is taken into account, considering the position and orientation of the implant specified in the virtual implant planning, wherein a cavity (5) is formed below the reinforcement area (2a) by the inner wall (1a) and the outer wall (1b), which has a fluidically effective connection to the at least one opening (3, 3'), wherein the inner wall (1a) and the outer wall (1b) enclose the cavity (5), wherein the inner and outer walls (1a;1b) are formed to create the cavity (5) open towards the gingiva up to a gingival surface and seal the cavity (5) with end faces of the inner and outer walls (1a; 1b) forming the cavity (5) against the pharyngeal space; - Generating at least one digital data set of the virtual drilling template (1), - Creating a physical drilling template (1) using an additive manufacturing process, based on at least one digital data set. [19] Method according to claim 18, wherein an orientation of the at least one breakthrough (3, 3') is determined on the basis of a direction vector. [20] Method according to any one of the preceding claims 18 to 19, further comprising the following method steps: - Calculating a connecting line V1 based on a predetermined inlet coordinate K E of the inlet and an exit coordinate K A of the outlet, - Calculating a connecting line V2 based on a predetermined inlet coordinate K E of the inlet and an implant (reference) coordinate K I , - Spanning a plane E1 which includes the connecting line V1 and V2, - Determining the intersection path S of the plane E1 with the outer wall and / or inner wall and / or upper wall of the drilling template (1), - Creating a fluid-carrying element based on the section path S. [21] Method according to any one of the preceding claims 18 to 20, further comprising the following method steps: - Determining individual points of interest P i on the surface of the virtual design of the drilling template (1), in particular the inlet coordinate K E of the inlet and outlet coordinate K A of the outlet, - Generating individual connecting lines V ibetween the points P i , wherein the connecting lines are projected onto the surface of the virtual design of the drilling template (1) and thus represent a section path S, - Creating a fluid-carrying element based on the section path S. [22] Method according to any one of the preceding claims 18 to 21, further comprising the following method steps: - that the virtual design of the drilling template (1) is proposed to a user for authentication purposes, - upon confirmation of the correctness of the design by the user, at least one digital data set of the virtual drilling template (1) is generated. - If the user rejects the proposed design, changes are made to the virtual design of the drilling template (1), in particular the position and orientation of the through-hole (2) and the at least one through-hole (3, 3') and the fluid-carrying element (4, 8), in particular the course of the fluid-carrying element, and the at least one digital data set of the virtual drilling template (1) is then generated.

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