It is known, that certain defects of the lower jaw, which the surgeon has to face in his practice, can not be eliminated by simple surgical intervention or by physiological bone regeneration. In such cases modern biotechnologies are used to restore tissue, with its help the synthesis of the necessary bone sites is performed, which can serve as a reliable material for replacing the defect and restoring the function of the lost tissue in full. The search for the optimal biomaterial is constantly continuing, especially in the implementation of 3D-printing technology, however, well-known and well-proven methyl methacrylate and hydroxyapatite remain reliable sources for the restoration of bones. In the article, we tried to show our experience in the use of implants based on hydroxyapatite and methacrylate, and also we outlined the main biomechanical characteristics and the optimal composition of the implants. We found out that the optimum ratio of methyl methacrylate and hydroxyapatite is 30/70. This allows you to achieve better fixation, high strength and good plasticity of the implants, which is undoubtedly important.

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