New materials for the manufacture of intracanal pins

   The issue of tooth strength loss due to hard tissue loss after endodontic treatment remains relevant. Intracanal pins and cores are widely used for long-term restoration of the anatomical and functional integrity of depulped teeth. Modern studies focus on the multifactorial nature of morphofunctional processes of restoration of lost tissues. The main parameters are the size of the restored crown, the shape of the root canal and the redistribution of occlusal loads. Physicochemical characteristics of pin materials are also important, such as: biocompatibility, strength, elasticity, hypoallergenicity, adhesion quality and aesthetics. Previously, preference was given to metal pins, but they have disadvantages: corrosion, weak connection and low aesthetics, which makes them less attractive compared to modern alternatives.

   In connection with the above, the purpose of this study is to develop a technology for the two-stage manufacture of graphene-containing dental pins using the 3D printing method.

   Materials and methods: The technology for manufacturing dental pins is based on the use of the method of printing monoceramic dental products. The process uses a zirconium suspension, which is a poorly soluble viscous white liquid with a specific odor, with which printing will occur. As part of the development of the technology for producing monoceramic dental products, a large number of dental pins were printed using an additive printer based on selective laser stereolithography. Then, the porous blanks will be pre-functionalized with a suspension of graphene oxide and sintered in vacuum conditions, and will be studied further. Thus, the introduction of 3D printing technology in the process of manufacturing dental pins will open up opportunities for the use of new promising domestic materials in clinical practice.

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