Using the Technology of Layer-By-Layer Synthesis of Photopolymer Material During the Manufacturing of Medical Prototype Implants

Alexey Aleksandrovich Shumkov, Almaz Mullayanovich Hanov, Timur Rizovich Ablyaz, Evgeniy Aleksandrovich Morozov, Polina Nikolaevna Kilina, Dmitry Olegovich Pustovalov

Perm National Research Polytechnic University, 29, Komsomolsky Ave, Building A, Office 208, Perm, Russia 614990

ABSTRACT: Cranio-maxillo-facial surgeons need accurate and objective information about the structure, shape and size of various types of traumatic defects for evaluating clinical picture of a disease, planning and preparation for future surgeries. Computer tomography is often used for obtaining such information; it makes it possible to obtain high-precision three-dimensional images of various structures in the human body. However in order to obtain complete and objective information, especially about the nature of traumatic damages and for their effective treatment, namely, for the use of an implant instead of a lost or a damaged organ, it is desirable to have a real three-dimensional model. Consequently, the relevant task is fast and accurate conversion of data obtained by computer tomography into a three-dimensional computer model, and then into a solid model of the lost or damaged organ. It is often impossible to manufacture individual implants of complex shape. In manufacturing implants, rapid prototyping technologies (RP - technologies) were used. The technology is based on initiating the reaction of polymerization using digital video projectors. This technology makes it possible to obtain individual implants of complex shape without using additional tools, by the results of cone-beam computer tomography. By the results of tomography, 191 images of the object were selected. The 3D-DOCTOR software suite was used to build a three-dimensional computer model; the images were merged into cross-sections of the will-be 3D model. The modes of building an implant of man's jaw from cross-linked photopolymer material SI500 have been experimentally determined. A possibility has been established to obtain individual geometrically-complex implants using the rapid prototyping technology, where two digital video projectors are used for initiating the reaction of polymerization.

KEYWORDS: implant; rapid prototyping; cone-beam computer tomography (CBCT); photopolymer material

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