ZUO Yanping, WANG Yongyue, WANG Rong, LIU Ning, FU Yunting, ZHOU Ying. Biomechanical study of implants after extrusion of cancellous bone[J]. Journal of Clinical Medicine in Practice, 2021, 25(12): 1-4, 8. DOI: 10.7619/jcmp.20211082
Citation: ZUO Yanping, WANG Yongyue, WANG Rong, LIU Ning, FU Yunting, ZHOU Ying. Biomechanical study of implants after extrusion of cancellous bone[J]. Journal of Clinical Medicine in Practice, 2021, 25(12): 1-4, 8. DOI: 10.7619/jcmp.20211082

Biomechanical study of implants after extrusion of cancellous bone

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  • Received Date: March 12, 2021
  • Available Online: June 21, 2021
  • Published Date: June 27, 2021
  •   Objective  To establish animal and finite element models by using different osteotome techniques (screw and percussion), and to study the biomechanical properties of implants.
      Methods  Clinical implant surgery was simulated on condyles of femur of dog, the primary preparation cavity of the cancellous bone was made by pioneer drilling, cancellous bone of the implant sockets was squeezed using screw and percussion techniques, then implants of the same size were inserted. Samples were taken at 1 week, 2, 4 and 12 weeks after the animal surgery, and push-out tests of implants were conducted. The finite element models of the two osteotme techniques were established, and the horizontal stresses were loaded on the crown. The differences of the stability of the implants were compared.
      Results  In the experiment of implant extruding, the implant with screw extrusion showed better mechanical properties. The results of finite element analysis showed that under the effect of the same horizontal load, the movement of the implant using percussion techniques was smaller.
      Conclusion  Implants by screw extrusion have obvious advantages in the resistance to vertical forces compared with those by percussive extrusion.
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