Biomechanical role of peri-implant cancellous bone architecture.

Satoru Matsunaga, Yoshitaka Shirakura, Takashi Ohashi, Ken Nakahara, Yuichi Tamatsu, Naoki Takano, Yoshinobu Ide

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

PURPOSE: The aim of this study was to investigate the biomechanical role of trabecular bone around dental implants in the mandible. MATERIALS AND METHODS: The model in this study was made using micro-computed tomography data taken from a cadaver in whom endosseous implants had been in place for 15 years prior to death. Morphologic analysis and three-dimensional (3D) finite element analysis were performed to calculate the peri-implant loading path of the model in which the trabecular structure was accurately simulated. RESULTS: As seen through multiscale analysis using the homogenization method, the trabecular bone architecture around implants was isotropic for the most part. Also, 3D finite element analysis showed that compressive stresses oblique to the implant axis were transmitted to the lower constrained surface; tensile stresses oblique to the implant axis were transmitted to the upper constrained surface, and they intersected each other with vertical loading. The highest stress in cancellous bone was observed on perpendicular loading, and stress produced in trabeculae decreased approaching horizontal loading. CONCLUSION: Cancellous bone architecture around the implant was generally isotropic. 3D finite element analysis showed that cancellous bone trabeculae around implants dispersed stress by forming load transfer paths. The results suggest that trabecular bone plays a major role in supporting functional pressure exerted via the implant.

Original languageEnglish
Pages (from-to)333-338
Number of pages6
JournalThe International journal of prosthodontics
Volume23
Issue number4
Publication statusPublished - 2010 Jul

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Finite Element Analysis
Dental Implants
Mandible
Cadaver
Cancellous Bone
Tomography
Pressure

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Matsunaga, S., Shirakura, Y., Ohashi, T., Nakahara, K., Tamatsu, Y., Takano, N., & Ide, Y. (2010). Biomechanical role of peri-implant cancellous bone architecture. The International journal of prosthodontics, 23(4), 333-338.

Biomechanical role of peri-implant cancellous bone architecture. / Matsunaga, Satoru; Shirakura, Yoshitaka; Ohashi, Takashi; Nakahara, Ken; Tamatsu, Yuichi; Takano, Naoki; Ide, Yoshinobu.

In: The International journal of prosthodontics, Vol. 23, No. 4, 07.2010, p. 333-338.

Research output: Contribution to journalArticle

Matsunaga, S, Shirakura, Y, Ohashi, T, Nakahara, K, Tamatsu, Y, Takano, N & Ide, Y 2010, 'Biomechanical role of peri-implant cancellous bone architecture.', The International journal of prosthodontics, vol. 23, no. 4, pp. 333-338.
Matsunaga S, Shirakura Y, Ohashi T, Nakahara K, Tamatsu Y, Takano N et al. Biomechanical role of peri-implant cancellous bone architecture. The International journal of prosthodontics. 2010 Jul;23(4):333-338.
Matsunaga, Satoru ; Shirakura, Yoshitaka ; Ohashi, Takashi ; Nakahara, Ken ; Tamatsu, Yuichi ; Takano, Naoki ; Ide, Yoshinobu. / Biomechanical role of peri-implant cancellous bone architecture. In: The International journal of prosthodontics. 2010 ; Vol. 23, No. 4. pp. 333-338.
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