Mandibular condyle motion track measuring method for manufacturing mandibular condyle prosthesis

A technology of movement trajectory and mandible, which is applied in the direction of prosthesis, application, skull, etc., can solve the problem of inability to accurately measure the movement trajectory of the mandible, and achieve the effect of accurate measurement

Active Publication Date: 2018-06-05
PEKING UNIV SCHOOL OF STOMATOLOGY
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Problems solved by technology

[0004] This application provides a method for measuring the motion trajectory of the mandibular condyle for the manufacture of mandibular co

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  • Mandibular condyle motion track measuring method for manufacturing mandibular condyle prosthesis
  • Mandibular condyle motion track measuring method for manufacturing mandibular condyle prosthesis
  • Mandibular condyle motion track measuring method for manufacturing mandibular condyle prosthesis

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Embodiment Construction

[0030] see figure 1 , the application provides a method for measuring the motion track of the mandibular condyle for the manufacture of the mandibular condyle prosthesis, including:

[0031] Step 11: Obtain the patient's mandibular three-dimensional model, the standard three-dimensional model of the upper and lower jaw dentition, and the mandibular movement trajectory.

[0032] Step 12: Using Geomagic Studio software, match the standard three-dimensional model of the upper and lower jaw dentition with the three-dimensional model of the mandible, and replace the lower dentition on the three-dimensional mandible model with the one in the three-dimensional model of the standard upper and lower jaw dentition The lower dentition, to obtain a standard 3D model of the mandible.

[0033] Image registration is performed on the 3D model data of the two data modalities, so that the corresponding 3D point set X of the two sets of graphic data A (x1,y1,z1) and x N (x2, y2, z2) to achiev...

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Abstract

The invention provides a mandibular condyle motion track measuring method for manufacturing A mandibular condyle prosthesis. The method comprises the following steps: acquiring a mandible three-dimensional model, a standard maxilla-mandible dentition three-dimensional model and a mandibular motion track of a patient, wherein targets include an upper target and a lower target; matching the maxilla-mandible dentition three-dimensional model with the mandible three-dimensional model, substituting a lower dentition in the maxilla-mandible dentition three-dimensional model for a lower dentition inthe mandible three-dimensional model to obtain a standard mandible three-dimensional model; matching the mandibular motion track with the standard mandible three-dimensional model; performing calculation to obtain the motion track of mandibular condyle according to the mandibular motion track and a preset function side of the mandibular condyle on the mandible three-dimensional model. According tothe method, the standard maxilla-mandible dentition three-dimensional model is taken as a middle bridge, and the mandibular condyle motion track is obtained according to the mandibular motion track obtained by measuring with a mandibular motion track scanning instrument, so that accurate measurement of the mandibular condyle motion track is realized.

Description

technical field [0001] The present application relates to the field of simulation of medical images, in particular to a method for measuring the motion trajectory of the mandibular condyle used in the manufacture of the mandibular condyle prosthesis. Background technique [0002] The mandibular condyle is often partially or completely lost due to trauma, tumor, inflammation, ankylosis or congenital diseases, resulting in partial or complete loss of mandibular function. In this regard, the prior art uses methods such as autologous bone graft, allogeneic bone graft and artificial mandibular condyle to reconstruct a condyle of the temporomandibular condyle to restore the function of the joint and prevent the further development of the disease. Therefore, it is necessary to study the measurement method of the mandibular condyle motion trajectory. [0003] A major difficulty in the study of the mandibular condyle lies in its irregular surface structure, which is difficult to des...

Claims

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Application Information

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IPC IPC(8): A61F2/28G06T17/00
CPCA61F2/2875A61F2/30942A61F2002/30948G06T17/00
Inventor 郭传瑸许向亮孙玉春黄超李琳琳
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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