The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Success rate and marginal bone loss of Osstem USII plus implants; Short term clinical study

Osstem USII plus 임플란트의 단기간 성공률 및 변연골 흡수량 평가

  • Kim, Sun-Keun (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Kim, Jee-Hwan (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Lee, Keun-Woo (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Cho, Kyoo-Sung (Department of Periodontology, College of Dentistry, Yonsei University) ;
  • Han, Dong-Hoo (Department of Prosthodontics, College of Dentistry, Yonsei University)
  • 김선근 (연세대학교 치과대학 보철학교실) ;
  • 김지환 (연세대학교 치과대학 보철학교실) ;
  • 이근우 (연세대학교 치과대학 보철학교실) ;
  • 조규성 (연세대학교 치과대학 치주학교실) ;
  • 한동후 (연세대학교 치과대학 보철학교실)
  • Received : 2011.03.15
  • Accepted : 2011.06.22
  • Published : 2011.07.29
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Abstract

Purpose: The aim of this study was to evaluate the clinical value of Osstem$^{(R)}$ USII plus system implants. Clinical and radiographic data were analyzed for 88 implants placed and functionally loaded for a 12 month period at the Yonsei University Dental Hospital. Materials and Method: Based on the patient's medical records, clinical factors and their effects on implant marginal bone resorption, distribution and survival rate were analyzed. The marginal bone loss was evaluated at implant placement and during a 6 to 12 months functional loading period. The independent sample t-test was used to evaluate the interrelationship between the factors (${\alpha}$=0.05), and one way repeated measures ANOVA was used to compare the amount of marginal bone resorption. Results: The cumulative survival rate for 88 implants was 100%. The marginal bone resorption from implant placement to prosthetic delivery was 0.24 mm and the average marginal bone resorption from prosthetic delivery to 12 months of functional loading was 0.19 mm. The total average bone resorption from implant placement to 12 months of functional loading was 0.43 mm. There were no statistically differences in the amount of marginal bone resorption when implants were placed in the maxilla or the mandible (P>.05), however, implants placed in the posterior areas showed significantly more marginal bone loss than those placed in the anterior areas (P<.05). Conclusion: Based on these results, the short term clinical success rate of RBM surface treated external connection domestic implants showed satisfactory results and the marginal bone loss was in accord with the success criteria of dental implants.

연구 목적: 임플란트 경부까지RBM 표면 처리를 한 Osstem$^{(R)}$ USII plus system (Osstem Co., Seoul, Korea)의 임상적 유용성을 평가하기 위하여 연세대학교 치과대학 병원에 내원한 환자 중 이 system을 이용하여 치료 받은 32명의 환자에게 식립된 88개의 임플란트를 대상으로 기능 부하 후 1년까지의 임상적, 방사선학적 결과를 후향적으로 분석하였다. 연구 재료 및 방법: 진료 기록부를 통해 전신 조건, 성별, 연령, 식립 위치, 식립 된 임플란트의 직경 및 길이 등을 조사하여 그에 따른 분포 및 생존율의 차이와 함께 이들 항목이 변연골 흡수량에 영향을 미치는지 조사하였다. 방사선사진 분석으로 임플란트 식립 시, 보철물 장착 후 6개월 내지 1년간의 변연골 흡수량을 측정하여 분석하였다. 각 항목과의 연관성 분석을 위하여 독립 t-검정(independent sample t-test)을 이용하였으며(${\alpha}$=.05), 보철물 장착 전과 보철물 장착 후 12개월 동안의 변연골 흡수량 비교를 위하여 일원 반복측정 분산 분석(one-way repeated-measures ANOVA)을 이용하였다(${\alpha}$=.05). 결과:총 32명에게 식립된 88개의 임플란트 중에서 실패한 것은 없었으며 누적 생존율은 100%로 나타났다. 임플란트 식립 시부터 보철물 장착까지의 변연골 흡수량은 0.24 mm이었으며, 보철물 장착 후 12개월까지의 변연골 흡수량은 평균 0.19 mm로 임플란트 식립 시부터 보철물 장착 12개월까지의 총 변연골 흡수량은 0.43 mm였다. 상악에 식립된 경우와 하악에 식립된 경우의 변연골 흡수량을 비교했을 때는 통계적으로 유의한 차이를 보이지 않았으나 구치부에 식립된 경우가 전치부에 식립된 경우에 비해 변연골 흡수량이 크게 나타났으며 이는 통계적으로 유의한 차이가 있었다. 결론: 이상의 결과를 토대로 보철물 장착 12개월까지의 기간 동안 임플란트 고정체의 경부까지 RBM 표면 처리를 한 외측 연결형의 국산 임플란트의 단기간 임상적인 성공률은 만족스러운 결과를 보였으며 변연골 흡수량도 임플란트 성공 기준에 부합하였다.

Keywords

References

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