چكيده به لاتين
Dental implants are the treatment of choice in the dental clinic to replace missing natural teeth. Titanium and its alloys are widely used in medical and dental fields due to their excellent biocompatibility, high corrosion resistance, high specific strength and excellent mechanical properties. Due to the need for rapid improvement and long-term stability of dental implants, existing titanium-based implant materials do not fully meet the current expectations of patients. In order to avoid re-implantation operations, changes in chemical composition and/or modifications The surface layer of the material is used. Various methods have been developed to improve the surface properties of titanium-based implant materials and thus the ability of bone grafting. In order to create a stable interface with the host tissue, porous implants are widely used to ensure the ingrowth of cells and colonization of the implant. It has been shown that titanium alloys with a porous structure allow rapid bone growth through their open structure and achieve anchorage with bone tissue by increasing the bone-implant interface area. To achieve the appropriate surface morphology, 16 samples were made with 5 manufacturing parameters, including pressure and sandblasting cycle, anodizing time and voltage, and acid etching time. Sandblast pressure from 2 to 5 bar, sandblast cycle between 12 and 24, anodizing time from 45 to 180 seconds, anodizing voltage from 120 to 150 volts, and acid etching time from 1 to 3 minutes were our variables. The results of SEM, EDS, XRD, contact angle, microhardness and cell analyzes such as MTT and Real-Time PCR were collected. The morphology of the surface is directly related to the increase in anodizing time and voltage, and the longer the anodizing time and voltage, the better the formation of spherical holes. With sandblasting and double acid etching, the contact angle of the implants is reduced and the surface becomes more hydrophilic. Implants do not necessarily show better properties by increasing the anodizing time and voltage, and other factors such as acid type, solution concentration, and acid temperature affect their properties during the manufacturing process.
