Production method and system of maxillary defect prosthesis
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A production method and jawbone technology, which are applied in dental prosthesis, medical science, image data processing, etc., can solve the problems of cumbersome production process, long cycle, long diagnosis and treatment cycle, etc., and achieve the effect of improving production accuracy
Active Publication Date: 2020-08-11
PEKING UNIV SCHOOL OF STOMATOLOGY
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[0003] The manufacturing method of the maxillary defect prosthesis, due to the different materials of each component, the manufacturing method and process are relatively cumbersome, the cycle is long, and the cumulative error generated by each manufacturing step is relatively large
If the maxillary defect is large, in order to reduce the weight of the prosthesis and achieve better retention and sta...
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Embodiment 1
[0077] see figure 2 , is a schematic diagram of a fully digital design and fabrication method for a maxillary defect prosthesis provided in the embodiment of the present application. As shown in the figure, the process may include:
[0078] S201, acquiring a three-dimensional digital model of the maxillary defect;
[0079] Acquisition of the 3D digital model of the maxillary defect is the basis for digital fabrication. Preferably, the three-dimensional digital model of the maxillary defect can be obtained in the following ways:
[0080] The first way: direct access to technology. The three-dimensional digital model of the maxillary defect was obtained directly by combining spiral CT and intraoral scanning. For example, the 3D data of the maxillary defect cavity and dentition can be obtained through spiral CT scanning, the 3D data of the maxillary dentition and palate mucosa can be obtained through intraoral scanning, and the 3D digital model of the maxillary defect can be ...
Embodiment 2
[0114] The embodiment of the present invention also provides a fully digital design and production system for maxillary defect prostheses, such as Image 6 shown, including:
[0115] A 3D digital model acquisition subsystem 601, configured to acquire a 3D digital model of the maxillary defect;
[0116] The computer-aided design CAD subsystem 602 is used to obtain the undercut depth according to the three-dimensional digital model, select artificial teeth from the database, and determine retainers, major connectors, minor connectors and bases to obtain the maxillary Design of bone defect prosthesis;
[0117] The prosthesis making subsystem 603 is configured to make the maxillary defect prosthesis according to the design of the maxillary defect prosthesis.
[0118] Further, the 3D digital model acquisition subsystem 601 is specifically used to acquire a 3D digital model of the maxillary defect in the following manner:
[0119] The three-dimensional data of the maxillary defec...
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Abstract
The application discloses a full digital design and a production method and system of a maxillary defect prosthesis in order to improve production accuracy, quality and efficiency and shorten a production period of the prosthesis. The production method comprises the steps of: acquiring a maxillary defect three-dimensional digital model; according to the three-dimensional digital model, carrying out model observation and determining an undercut depth of an abutment tooth; according to the undercut depth of the abutment tooth, determining retainers; according to the three-dimensional digital model, determining a big connector and a small connector; according to the three-dimensional digital model, selecting artificial teeth from a database, arranging the artificial teeth and determining positions of the artificial teeth; according to the artificial teeth, the retainers, the big connector and the small connector, determining the design of the maxillary defect prosthesis; and according tothe design of the maxillary defect prosthesis, producing the maxillary defect prosthesis by an additive manufacturing method or a subtractive manufacturing method. The application further discloses the full digital design and the production system of the maxillary defect prosthesis
Description
technical field [0001] The present application relates to the technical field of oral and maxillofacial prostheses, in particular to a method and system for making a maxillary defect prosthesis. Background technique [0002] Maxillary defects often have simultaneous defects of the dentition and the maxilla, and often cause the oronasal cavity to perforate, thereby affecting the patient's chewing, swallowing, and pronunciation functions. Only a small number of patients with maxillary defects can be repaired by surgical reconstruction, and most patients still need to be repaired by prosthesis. [0003] The manufacturing method of the maxillary defect prosthesis, due to the different materials of each component, the manufacturing method and process are relatively cumbersome, the cycle is long, and the cumulative error generated by each manufacturing step is relatively large. If the maxillary defect is large, in order to reduce the weight of the prosthesis and achieve better re...
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