Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
권호 표지

HISTOMORPHOMETRIC STUDY OF DENTAL IMPLANTS WITH DOUBLE ACID-ETCHED AND ANODIC OXIDIZED SURFACE IN THE RABBIT TIBIA

토끼 경골에서 치과용 임프란트의 이중 산부식 및 양극 산화 표면처리에 따른 조직계측학적 연구

  • Han, Ye-Sook (Department of Oral and Maxillofacial Surgery, College of Medicine, Inha University) ;
  • Kim, Il-Kyu (Department of Oral and Maxillofacial Surgery, College of Medicine, Inha University) ;
  • Chang, Keum-Soo (Department of Oral and Maxillofacial Surgery, College of Medicine, Inha University) ;
  • Park, Tae-Hwan (Department of Oral and Maxillofacial Surgery, College of Medicine, Inha University) ;
  • Jeon, Won (Department of Oral and Maxillofacial Surgery, College of Medicine, Inha University)
  • 한예숙 (인하대학교 의과대학 구강악안면외과학교실) ;
  • 김일규 (인하대학교 의과대학 구강악안면외과학교실) ;
  • 장금수 (인하대학교 의과대학 구강악안면외과학교실) ;
  • 박태환 (인하대학교 의과대학 구강악안면외과학교실) ;
  • 전원 (인하대학교 의과대학 구강악안면외과학교실)
  • Published : 2006.09.30
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Abstract

This study was performed to evaluate the effects of three different implant surface treatments to the bone formation during osseous healing period under unloading conditions. Machined, double-acid etched and anodic oxidized implants were inserted into tibia of 3.0 - 3.5 kg NZ white male rabbits and 2 animals of each group were sacrificed at 2, 4 and 8 weeks. The specimens containing implant was dehydrated and embedded into hard methylmethacrylate plastic. After grinding to $50{\mu}m$, the specimens were stained with Villanueva bone stain. From each specimen, histomorphometric evaluation and the bone implant contact rate were analysed with optical microscope. The results were as follows; 1. In the scanning electronic microscopic examination, machined surface implant had several shallow and paralleled scratches on plain surface, double acid-etched implant had lots of minute wrinkles, rough valley and also irregularly located craters that looked like waves, anodic oxidized surface implant had porosity that minute holes were wholly distributed on the surface. 2. After 2 weeks of implantation, the percentages of bone-to-implant contact in the machined implant, double acid-etched implant and anodic oxidized implant were 26.85%, 62.64% and 59.82%, after 4 weeks of implantation they were 64.29%, 77.85% and 75.23%, and after 8 weeks they were 82.66%, 85.34% and 86.39%. 3. After 2 weeks of implantation, the percentages of bone area between threads in the machined implant, double acid-etched implant and anodic oxidized implant were 21.55%, 42.81%, and 40.33%, after 4 weeks of implantation they were 49.32%, 62.60% and 75.56%, and after 8 weeks they were 71.62%, 87.73% and 83.94%. In summary, percentages of implant surface contacted to bone trabeculae and bone formation area inside threads in double acid-etched implants and anodic oxidized implants were greater than machined implants in early healing stage. These results suggest that double acid-etched and anodic oxidized surface implants could reduce the healing period for osseointegration and may enable to do early function.

Keywords

References

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