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한국인의 임플란트 주위 질환에서 real time PCR법을 이용한 치주세균 평가: pilot study

Evaluation of periopathogenic bacteria of peri-implantitis using real-time PCR in Koreans: pilot study

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주제분류치의학

초록

목적: 한국인에서 임플란트 주위 질환의 심도에 따른 미생물학적 차이를 알아보기 위해 real time Polymerase Chain Reaction (real-time PCR)법을 이용하여 5종의 치주세균의 정량적, 정성적 분석을 시행하였다. 연구 재료 및 방법: 임플란트가 식립된 총 60명의 환자를 치근단 방사선 사진 및 임상지수 검사를 통해 3군(건강군, 임플란트 주위 점막염군, 임플란트 주위염군)으로 나누었다. 멸균된 curette기구를 이용해 치은연하에서 미생물 샘플을 채취한 후 치주세균 5종에 관해 real time PCR을 시행하였고 comparative delta-CT method를 이용하여 분석한 후 미생물의상대적 발현량을 비교하였다. 결과: Eikenella corrodens, Treponema denticola의 상대적 발현량은 임플란트 주위염 그룹에서 유의하게 높게 나타났다(P <0.017). 반면 Fusobacterium nucleatum, Porphyromonas gingivalis의 상대적 발현량은 질환의 심도와는 관련 없이 건강한 임플란트 그룹에서 가장 높게 나타났다. Prevotella intermedia의 상대적 발현량은 건강한 임플란트 그룹에서 유의하게 낮게 나타났다(P < 0.017). 결론: 한국인의 임플란트 주위질환에서 대표적인 치주염 세균이 검출되었으나 치주염과 유사한 미생물학적 분포를 보이지는 않았다.

Abstract

Purpose: We performed quantitative and qualitative analysis of typical periodontal bacteria using real time PCR method to investigate the microbiological difference according to the severity of peri-implant disease in Koreans. Materials and Methods: Total of 60 implants were divided into three groups (healthy group, peri-implant mucositis group, peri-implantitis group) through periapical radiographs and clinical indices. The evaluated clinical parameters were pocket depth, plaque index, suppuration and bleeding on probing. Using a sterilized curette instrument, microbial samples were collected from the subgingival plaque and real-time PCR was performed on five periodontal bacteria. The relative expression levels of microorganisms were compared by comparative delta-CT method. Results: The relative expression levels of E. corrodens and T. denticola were significantly higher in the peri-implantitis group (P < 0.017). On the other hand, the relative expression level of F. nucleatum and P. gingivalis was relatively high in the healthy implant group regardless of the severity of disease. P. intermedia was significantly lower in the healthy implant group (P < 0.017). Conclusion: Periodontal bacteria were detected in Koreans with peri-implant diseases, but there was no microbiological distribution similar to periodontitis.

참고문헌 (50)

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