# US 10,945,822 B2 · Methods for producing a laboratory analogue for dental implants > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,945,822 B2 - Document ID: US10945822B2 - Status: Granted - Kind: B2 - Application number: 15/401,405 - Filed: 2017-01-09 - Published: 2017-04-27 - Granted: 2021-03-16 - Earliest claimed: 2012-06-06 - Assignees: Heraeus Kulzer GmbH - Applicants: Heraeus Kulzer GmbH - Inventors: Yohannes Woldegergis; Stefan Hormann; Helmut Redemann; Uwe Boehm - Web page: https://patentgrep.com/patent/US10945822B2 ## CPC - A61C 13/34: Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4] - A61C 8/0001: {Impression means for implants, e.g. impression coping} - A61C 9/0053: {Optical means or methods, e.g. scanning the teeth by a laser or light beam} - A61C 13/0004: {Computer-assisted sizing or machining of dental prostheses} - A61C 13/0006: {Production methods} - B33Y 10/00: Processes of additive manufacturing - B29L 2031/7536: {Artificial teeth} - B33Y 80/00: Products made by additive manufacturing - Y10T 29/49567: Dental appliance making - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Method for producing a three-dimensional model of at least a partial jaw comprising: fully-automatic shaping of at least one recess for accommodating a laboratory analogue into the alveolar ridge of the model using three-dimensional scanning data and shaping the depth, position, and orientation of the at least one recess such that the crestal end of the laboratory analogue inserted into said recess coincides with the crestal end of the dental implant in the jaw; or fully-automatic shaping of at least one vestibular, lingual or palatinal feed-through through the model into the at least one recess using three-dimensional scanning data and arranging the feed-through such that the crestal end of a laboratory analogue coincides with the crestal end of the dental implant in the jaw when the laboratory analogue is fixed in place with a pin inserted through the feed-through in the model into an opening in the laboratory analogue. ## Claims ### Claim 1 A method for producing a laboratory analogue for dental implants, said method comprising the steps of: providing at least one sleeve comprising a cylindrical depression having an internal thread; providing a three-dimensional model of at least a partial region of a jaw of a patient who harbors at least one dental implant; inserting at least one sleeve into at least one recess of the model matching the sleeve, each recess being arranged in a region of the model, in which a dental implant is arranged in the jaw of the patient; and fully-automatic ablation of the at least one inserted sleeve to produce a laboratory analogue from the sleeve, wherein the ablation is controlled through three-dimensional scanning data of an oral space of the patient, wherein the data was recorded previously, and wherein the sleeve is ablated based on such data to the extent that a crestal end of the laboratory analogue produced from the sleeve coincides with a crestal end of the dental implant in the jaw of the patient. ### Claim 2 (depends on 1) The method according to claim 1, wherein the sleeve is ablated proceeding from a crestal direction. ### Claim 3 (depends on 1) The method according to claim 1, wherein the three-dimensional scanning data of the oral space of the patient is used in the production of the three-dimensional model of the region of the jaw. ### Claim 4 (depends on 1) The method according to claim 1, wherein the three dimensional model of at least a partial region of a jaw for producing a dental restoration is produced by a method comprising the steps of: providing data of the three-dimensional scan of the oral space of the patient who harbors at least one dental implant, wherein the data was recorded previously; preparing a three-dimensional model of at least the partial region of the jaw based on the data; and fully-automatic shaping of at least one recess for accommodating the laboratory analogue into an alveolar ridge of the model, wherein the data is utilized for the fully-automatic shaping. ### Claim 5 (depends on 4) The method according to claim 4, wherein a depth, a position, and an orientation of the at least one recess are shaped such that a crestal end of the laboratory analogue inserted into the recess coincides with a crestal end of a dental implant in the jaw of the patient, wherein the laboratory analogue is produced from the sleeve through ablation, and wherein the three-dimensional scanning data is used to ablate the sleeve fully-automatically. ### Claim 6 (depends on 4) The method according to claim 4, wherein the fully-automatic shaping proceeds by drilling, turning, grinding, cutting out and/or milling. ### Claim 7 (depends on 3) The method according to claim 3, wherein the three-dimensional model of at least a partial region of a jaw for producing a dental restoration is produced by a method comprising the steps of: providing data of the three-dimensional scan of the oral space of the patient who harbors at least one dental implant, wherein the data was recorded previously; preparing a three-dimensional model of at least the partial region of the jaw with at least one recess for accommodating the laboratory analogue having an opening, wherein each recess is arranged in a region of the model in which a dental implant is arranged in the jaw of the patient; and fully-automatic shaping of at least one vestibular, lingual or palatinal feed-through through the model into the at least one recess utilizing the data, the feed-through being arranged such that a crestal end of one laboratory analogue coincides with a crestal end of the dental implant in the jaw of the patient when the laboratory analogue is fixed in place with a pin that is inserted through the feed-through in the model into the opening in the laboratory analogue. ### Claim 8 (depends on 7) The method according to claim 7, wherein the feed-through and the opening are shaped to match the pin, the opening opens into a depression in the laboratory analogue, and a geometry of the depression matches a geometry of the pin. ### Claim 9 (depends on 7) The method according to claim 7, wherein the fully-automatic shaping proceeds by drilling, turning, grinding, cutting out and/or milling. ### Claim 10 (depends on 1) The method according to claim 1, wherein the fully-automatic ablation is carried out in computer-supported manner at an accuracy of ±10 μm. ### Claim 11 (depends on 1) The method according to claim 1, wherein the model is produced by rapid prototyping at an accuracy of ±100 μm. ### Claim 12 (depends on 1) The method according to claim 1, wherein a CAD-based stereolithographic method is used to obtain the data for production of the model and/or the laboratory analogue, and wherein the model is fabricated from a plastic material. ### Claim 13 (depends on 1) The method according to claim 1, wherein a five-axis processing is used in the ablation. ### Claim 14 (depends on 1) The method according to claim 1, wherein at least two recesses are generated or exist in the three-dimensional model and one sleeve each or one laboratory analogue each is configured to be inserted into each of the recesses, and wherein the position of the recess or feed-throughs and/or crestal ends of the laboratory analogues with respect to each other are adjusted by means of shaping and/or ablating based on the scanning data. ### Claim 15 (depends on 1) The method according to claim 1, wherein at least one cylindrical or conical recess is generated or exists in the model, wherein the recess is generated or exists to have a one-fold or n-fold rotational symmetry about a longitudinal axis of the recess, and wherein a sleeve or a laboratory analogue with the same rotational symmetry at least over regions thereof is configured to be inserted into the recess such that it fits in the recess only in one orientation or in the n-fold orientation. ### Claim 16 (depends on 1) The method according to claim 1, wherein the at least one recess is predefined during the production of the model to have a fixed defined shape that matches a certain shape of the sleeve or the laboratory analogue, and/or a shape of the recess is selected from a multiplicity of different shapes that match a multiplicity of different sleeves or laboratory analogues, wherein the shape is integrated into a measured virtual digitized jaw model as the recess before the model is produced.