Journal of Korean Dental Science

Korean Academy of Dental Science (대한치의학회)
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Histomorphometric Study of Implants Initially Stabilized through Bone Graft Packing into the Osteotomy before Implant Placement in Case of Wide Defects

  • Lee, Wang-Jae (Department of Periodontology, Dankook University School of Dentistry) ;
  • Hong, Ki-Seok (Department of Periodontology, Dankook University School of Dentistry)
  • Received : 2011.11.30
  • Accepted : 2011.12.16
  • Published : 2011.12.30
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Abstract

Purpose: This study sought to evaluate the effects of bone graft wedging on the initial stability of implants in bone sites of unfavorable quality. Materials and Methods: Three male beagle dogs were used in this study. Osteotomies were performed with parallel drills (${\O}4.1{\times}10mm$), and fixtures (${\O}3.3{\times}8mm$) were placed. The control group was given implants without bone graft. Experiment group A was given implants with minimal initial stability using autobone grafts, whereas experiment group B was given xenografts. Groups were also divided by healing times at 4, 8, and 12 weeks. Results: All implants in the control group failed to osseointegrate. On the other hand, all implants in the experiment groups were clinically well-maintained during the entire experiment period. After 4, 8, and 12 weeks, bone-to-implant contact (BIC) ratio and implant stability quotient (ISQ) increased in the experiment groups. The differences between experiment groups A and B were not statistically significant, however. Conclusion: In unfavorable bone regions for dental implants, bone graft packing into the osteotomy prior to implant placement secured minimal initial stability and showed reasonable BIC ratios and ISQ values throughout the study period.

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References

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