Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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Changes in the fractal dimension of peri-implant trabecular bone after loading: a retrospective study

  • Mu, Teh-Jing (Department of Periodontology, Gangnam Severance Dental Hospital, Yonsei University College of Dentistry) ;
  • Lee, Dong-Won (Department of Periodontology, Gangnam Severance Dental Hospital, Yonsei University College of Dentistry) ;
  • Park, Kwang-Ho (Department of Oral and Maxillofacial Surgery, Gangnam Severance Dental Hospital, Yonsei University College of Dentistry) ;
  • Moon, Ik-Sang (Department of Periodontology, Gangnam Severance Dental Hospital, Yonsei University College of Dentistry)
  • Received : 2013.01.15
  • Accepted : 2013.09.06
  • Published : 2013.10.31
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Abstract

Purpose: To assess bony trabecular changes potentially caused by loading stress around dental implants using fractal dimension analysis. Methods: Fractal dimensions were measured in 48 subjects by comparing radiographs taken immediately after prosthesis delivery with those taken 1 year after functional loading. Regions of interest were isolated, and fractal analysis was performed using the box-counting method with Image J 1.42 software. Wilcoxon signed-rank test was used to analyze the difference in fractal dimension before and after implant loading. Results: The mean fractal dimension before loading ($1.4213{\pm}0.0525$) increased significantly to $1.4329{\pm}0.0479$ at 12 months after loading (P<0.05). Conclusions: Fractal dimension analysis might be helpful in detecting changes in peri-implant alveolar trabecular bone patterns in clinical situations.

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References

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