• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Procedure of designing a dental prosthesis using digital techniques that includes the following steps to scan tissues of the upper jaw, obtaining a mesh of the upper jaw tissue, scanning tissues of the lower jaw, obtaining a mesh of the tissue of the lower jaw, scanning a few scanning posts (35) obtaining a scanned pole mesh from where the relative position between implants is obtained, and scanning the occlusion of the jaws, obtaining at least one occlusion mesh on each side of the arches; the method object of the invention also performs the verification of the data obtained in the steps of scanning the scan posts (35) is correct, and of scanning the occlusion so that it is ensured that the starting information at the time of performing the The design of the prosthesis is correct. Finally the procedure object of the invention performs a finite element analysis, to know the mechanical loads in each of the elements of the digital structure of the prosthesis, and if there is any point or some weak area in the structure of the prosthesis is reinforced the weak point or zone. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2692425A1
    申请号:ES201730757
    申请日:2017-06-01
    公开日:2018-12-03
    发明作者:Pedro PERALES PADILLA；Pedro PERALES PULIDO；Diego PERALES PULIDO
    申请人:Pedro PERALES PADILLA；Pedro PERALES PULIDO；
    IPC主号:
    专利说明:

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    • join the two halves together and the scan posts with the gum. -Get the digital structure of the definitive prosthesis in the CAD design software
    dental from previously obtained meshes. 5
    In the process of designing a dental prosthesis by means of digital techniques object of the invention the step of obtaining the relative positions between implants by means of a computerized tomography (CT) or a computerized tomography of conical beam (CBCT)
    10 within the stage of obtaining a digitally treated post mesh, it is performed with the scanning posts placed in the jaw implants. The scanning posts are of a different material than the implants, hence the segmentation by densities.
    15 When the stage of obtaining the relative positions between implants is performed by means of a computerized tomography (CT) or a conical beam computerized tomography (CBCT) within the stage of obtaining a mesh of digitally treated posts, with the scanning posts placed in the jaw implants, in the stage of generating three-dimensional files for ranges of established densities, a second is also obtained
    20 file for the material of the scanning posts
    The procedure for designing a dental prosthesis using digital techniques, if a patient does not have any remaining teeth, comprises the following stages:
    -Check that the information obtained at the stage of scanning the occlusion is correct:
    - if the patient has scan posts or has a provisional screwed, the occlusion scan is done in a conventional way, with a scanner whose information is correct;
    - If the patient has removable, the following stages are performed:
    30 • scan the two removable to obtain a mesh of each removable;
    • align the meshes of each removable by conventional procedures in occlusion position; • obtain a single mesh that reflects the relative position between the
    35 surfaces of the two removable that adapt to the gum, for this the following stages are performed:
    7
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    In patients where there are no remaining teeth, it is necessary to check, in addition to the relative position between implants, the information obtained at the stage of scanning the occlusion, so that the procedure of design of the dental prosthesis using techniques
    5 digital performs a series of checks to avoid errors in the relative position between implants and also checks the occlusion scan information.
    In the previous case, the one in which the patient does not have any remaining teeth, it is verified that the information obtained at the stage of scanning the occlusion is correct (24) by
    10 a procedure that depends on the elements that the patient has in the mouth. In this case the procedure depends on whether the patient has scan posts (35), a provisional screwed or removable (38).
    In the first two cases (the patient has scan posts (35) or has a
    15 provisional screwed), the occlusion scan is performed in a conventional manner, with a scanner whose information is correct.
    In the event that the patient has removable (38) the procedure to scan the occlusion has the following stages:
    20 - scan the two removable (38) to obtain a mesh of each removable (25);
    - align by means of conventional procedures the meshes of each removable (26);
    - obtain a single mesh that reflects only the relative position between the surfaces of the two removable (38) that adapt to the gum (27), for this, in a CAD software, a digital edition of the meshes of the removable is made (28),
    25 and the meshes of each removable are combined using virtual combination tools to obtain a single mesh (29);
    - remove surfaces not adapted to the gums of the jaws (30);
    - reverse the mesh that reflects only the relative position between the surfaces of the
    two removable (38) that adapt to the gum (31), thus obtaining the mesh of occlusion;
    - Place the scan of the upper and lower jaw in a CAD design software with respect to the occlusion obtained, so that the correct occlusion of the dental prosthesis to be manufactured is guaranteed.
    35 Likewise, it is verified that the information obtained at the stage of scanning the scanning posts is correct (5), that is to say that the relative position between
    10


    Implants is correct.
    To verify that the information obtained at the stage of scanning the scanning posts is correct, first of all it is a question of obtaining a mesh of posts treated digitally (6), to obtain this mesh of posts treated digitally the following are carried out stages:
    - obtain the relative positions between implants, by means of a computerized tomography (CT) or a conical beam computed tomography (CBCT) (7) with the scanning posts (35) placed in the jaw implants,
    10 basically consists of performing three-dimensional radiographs of the jaws with the scanning posts (35) placed in the jaw implants;
    - process the digital information obtained in a DICOM file viewing software;
    - generate three-dimensional files for two ranges of established densities (8),
    15 so that a file is obtained for the head of the scanning posts (35) that are of one material and a file for the implants that are of another material;
    - export the three-dimensional files to a CAD file (9);
    - three-dimensional files are cleaned in a CAD software
    eliminating all elements other than implants or scanning posts (10);
    - combine in a single mesh the information of the implants and the scanning posts (11) obtaining the mesh of posts treated digitally;
    The stage to obtain the relative positions between implants, by means of a tomography
    Computerized (CT) or a conical beam computerized tomography (CBCT) can be performed with the scanning posts (35) placed in the jaw implants, to facilitate the mesh treatment process and have more reference elements that define the height and axis of the implant, but the same result could be achieved only with computerized tomography (CT) or computerized beam tomography
    30 conical (CBCT) exclusively for implants.
    The density ranges for three-dimensional files are given by the different densities of the scanning posts (35) and the implants.
    35 Next, the coincidence or discrepancy between the initial scanning of the scanning posts (35) (scanned mesh) and the mesh obtained with the
    eleven


    Tomography with the mentioned posts (digitally treated post mesh) (12), for this purpose the posts on one side of the maxilla are aligned and the deviation on the opposite side is observed.
    If the scanned post mesh and the digitally treated post mesh match, the scanned post mesh is considered correct and can be designed on it.
    If the two meshes do not match, the scanned post mesh must be adapted to the digitally treated post mesh (13).
    10 To adapt the scanned post mesh to the digitally treated post mesh (13) virtual scan posts are used, which are elements for virtually placing the scanning posts (35) on each of the implants of the treated post mesh digitally for the correction of the scanning mesh. The virtual scanning posts consist of a mesh formed by a head shaped like the posts of
    15 scanned scanned next to the gum and a concentric axis to the head with a length greater than or equal to the implant.
    The adaptation is done as follows:
    - virtual scan posts are placed on the scan posts (35) 20 of the digitally treated post mesh (14),
    - the virtual scanning posts are aligned with the direction of the implants of the digitally treated post mesh (15),
    - the position of the scanning posts (35) of the post mesh is adapted
    scanned to the position of the virtual scan posts that have already been aligned (16), this adaptation is done with the following stages:
    - divide the maxilla by the midline in a first half and a second half (17),
    - in the first half, match the posts of the scanned mesh with the aligned virtual scan posts (18),
    30 -in the second half, match the posts of the scanned mesh with the aligned virtual scan posts (19),
    - a step is generated between the first half and the second half of the scanned post mesh, which is filled with a smooth transformation (20),
    - remove the scanning posts (35) from the original scan (21), 35 obtaining a mesh with the aligned posts and the gum,
    12
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    权利要求:
    Claims (1)
    [1]
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    类似技术:
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    Filius et al.2017|Three-dimensional computer-guided implant placement in oligodontia
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    同族专利:
    公开号 | 公开日
    EP3633608A1|2020-04-08|
    EP3633608A4|2020-06-03|
    WO2018220248A1|2018-12-06|
    ES2692425B2|2019-04-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0084760A1|1982-01-27|1983-08-03|Luciano Elaborati|Extra-bone device for mobile prosthesis retention|
    EP2165672A2|2003-05-02|2010-03-24|Orametrix, Inc.|Workstation for virtual treatment planning capable of providing output appliance design data|
    US20120259597A1|2007-05-18|2012-10-11|Biomet 3I, Inc.|Method for Selecting Implant Components|
    WO2012083959A1|2010-12-22|2012-06-28|3Shape A/S|Modeling and manufacturing the superstructure for a denture|
    US20150025855A1|2011-12-21|2015-01-22|3Shape A/S|Virtually designing a customized healing abutment|
    US20150173870A1|2013-12-20|2015-06-25|Biomet 3I, Llc|Dental system for developing custom prostheses through scanning of coded members|
    WO2016131939A1|2015-02-19|2016-08-25|Sirona Dental Systems Gmbh|Passive fit of implant bridges and implant bars by means of a cad/cam tool for the model-free creation of implant-supported restorations|
    WO2017044347A1|2015-09-11|2017-03-16|Carestream Health, Inc.|Method and system for hybrid mesh segmentation|
    US10327869B2|2015-10-21|2019-06-25|Biomet 3I, Llc|Attachment members with internally located radiopaque information markers for CT scan|CN111714235B|2020-06-12|2021-07-20|深圳云甲科技有限公司|Positioning direction algorithm, terminal and storage medium|
    法律状态:
    2018-12-03| BA2A| Patent application published|Ref document number: 2692425 Country of ref document: ES Kind code of ref document: A1 Effective date: 20181203 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201730757A|ES2692425B2|2017-06-01|2017-06-01|DESIGN PROCEDURE OF A DENTAL PROTESIS THROUGH DIGITAL TECHNIQUES|ES201730757A| ES2692425B2|2017-06-01|2017-06-01|DESIGN PROCEDURE OF A DENTAL PROTESIS THROUGH DIGITAL TECHNIQUES|
    PCT/ES2018/070388| WO2018220248A1|2017-06-01|2018-05-29|Method for designing a dental prosthesis using digital techniques|
    EP18809235.7A| EP3633608A4|2017-06-01|2018-05-29|Method for designing a dental prosthesis using digital techniques|
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