Biomechanical study of implants after extrusion of cancellous bone

ZUO Yanping; WANG Yongyue; WANG Rong; LIU Ning; FU Yunting; ZHOU Ying

doi:10.7619/jcmp.20211082

Journal of Clinical Medicine in Practice > 2021 > 25(12): 1-4, 8. > DOI: 10.7619/jcmp.20211082

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

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Biomechanical study of implants after extrusion of cancellous bone

1.
College of Stomatology of Xi'an Medical University, Xi'an, Shaanxi, 710021
2.
Department of Dental Implants, West China Stomatology Hospital of Sichuan University, Chengdu, Sichuan, 610041
3.
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, 300401
4.
Department of Stomatology, Shenzhen Longgang ENT Hospital, Shenzhen, Guangdong, 518172
5.
Department of Stomatology, Chengfei Hospital of Sichuan Province, Chengdu, Sichuan, 610091

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Received Date: March 12, 2021
Available Online: June 21, 2021
Published Date: June 27, 2021

Graphical Abstract

Abstract

Abstract

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.
- cancellous bone,
- bone extrusion,
- implants,
- biomechanics,
- screw extrusion,
- percussive extrusion

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