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KMID : 0602720120160020098
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Implantology
2012 Volume.16 No. 2 p.98 ~ p.111
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Bone Tissue Reaction on Implant Surfaces in Osteoporotic Rats
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Lee Jeong-Yol
Oh Hyun-Joo
Kim Sun-Jong
Shin Sang-Wan
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Abstract
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Purpose: The aim of this study was to investigate bone tissue reaction according to different implant surfaces by measurement of bone implant contact (BIC) ratio and bone area ratio in ovariectomized rats.
Materials and Methods: Sprague-Dawley female rats underwent ovariectomy for osteoporosis. After 8 weeks, 4-types implants (machined, Resorbable Blasted Media, Cellnest surface and Calcium Meta Phosphate-coated) were inserted into the medial side of the tibia. Unthreaded cylindrical-type implants (Ø1.2 mm, L2.0 mm, Osstem Co., Busan, Korea) were used. Rats were sacrificed at 2 and 4 weeks after implantation. Specimens were harvested and histomorphometric evaluations were performed by measurement of the BIC ratio and bone area ratio using the Kappa image base control program (Kappa Opto-electronic. Germany). Statistical analysis of each variable was evaluated by the ANOVA test using the SAS (ver. 9.1, SAS Institute, USA) for Windows.
Results: According to the method of surface treatment, the difference in early ossification for the implant was observed. Surface treated implants showed a significantly higher compact bone contact ratio compared with the machined implant at 2 and 4 weeks after implantation. Surface treated implants demonstrated a significantly higher marrow bone contact ratio compared with machined implants at 4 weeks after implantation. Surface treated implants showed a significantly higher compact bone area ratio compared with machined implants at 4 weeks after implantation.
Conclusion: In bones of poor quality, surface treated implants will provide greater stability compared with machined implants.
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KEYWORD
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coated materials, implant, osteoporosis
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