Three-dimensional finite element analysis of the effects of implant diameter and photofunctionalization on peri-implant stress

Tetsuo Ohyama, Hiroyasu Yasuda, Norio Shibuya, Satomi Tadokoro, Shinya Nakabayashi, Shunsuke Namaki, Yaeko Hara, Takahiro Ogawa, Tomohiko Ishigami

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Previous finite element analyses of peri-implant stress assumed a bone-implant contact (BIC) ratio of 100%, even though the BIC ratio is known to be approximately 50% or less. However, the recent development of ultraviolet treatment of titanium immediately before use, known as photofunctionalization, significantly increased the BIC ratio, to 98.2%. We used a unique finite element analysis model that enabled us to examine the effects of different BIC ratios on peri-implant stress. A three-dimensional model was constructed under conditions of vertical or oblique loading, an implant diameter of 3.3, 3.75, or 5.0 mm, and a BIC ratio of 53.0% or 98.2%. Photofunctionalization and larger implant diameters were associated with reduced stress on surrounding tissues. Under vertical loading, photofunctionalization had a greater effect than increased implant diameter on stress reduction. Under oblique loading, increased implant diameter had a greater effect than photofunctionalization on stress reduction.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalJournal of Oral Science
Volume59
Issue number2
DOIs
Publication statusPublished - 2017

Keywords

  • BIC
  • Dental implant
  • Diameter
  • FEM
  • Photofunctionalization

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