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Smear layer 처리에 따른 미세누출에 대한 연구
THE EFFECT OF SMEAR LAYER TREATMENT ON THE MICROLEAKAGE

이정민   (경희대학교 치과대학 치과보존학교실UU0001575  ); 박상혁   (경희대학교 치과대학 치과보존학교실UU0001575  ); 최기운   (경희대학교 치과대학 치과보존학교실UU0001575  );
  • 초록

    본 연구는 도말층 제거 여부에 따른 근관 밀폐효과를 평가하기 위해 단근관 치아를 3% NaOCl 하에서 Ni-Ti file을 이용하여 crown-down법으로 근관 형성 후 최종세정제로 NaOCl을 사용한 군과 EDTA를 사용한 군, 6개월 보관한 NaOCl-6군과 EDTA-6군으로 분류하였다. Continuous wave법으로 근관 충전 시행 후 색소 침투를 시행한 다음 해부학적 근첨에서 1.5 mm (Level 1), 3.0 mm (Level 2), 4.5 mn (Level 3)에서 수평절단 하여 누출률을 측정하였다. 1. 모든 실험군에서 평균 누출률은 치근단부에서 치경부로 갈수록 감소하였다. 2. NaOCl군의 누출률이 EDTA 군보다 level 1 2, 3에서 높게 나타났으나 level 1에서만 통계학적 유의차를 보였다 (p


    The purpose of this study was to compare the sealing ability of root canal obturation with or without the treatment of smear layer. Eighty extracted human teeth with one canal were selected Instrumentation was performed with crown-down technique. After instrumentation, root canals of the NaOCl group and NaOCl-6 group were irrigated with 3% NaOCl. EDTA group and EDTA-6 group were irrigated with 17% EDTA. Then all teeth were obturated using continuous wane obturation technique NaOCl group and EDTA group were immersed in methylene blue solution for 84hours. NaOCl-6 group and EDTA-6 group were immersed in methylene blue solution for 6months. The teeth were sectioned at 1.5 mn (Level 1), 3.0 mm (Level 2) and 4.5 mm (Level 3) from the root apex. The length of dye-penetrated inter-face and the circumferential length of canal at each level were measured using Sigma-Scan Pro 5.0. 1. The mean leakage ratio was decreased cervically. 2. NaOCl group showed higher mean leakage ratio than EDTA group at each level. But there was significant difference at level 1 only (p


  • 주제어

    도말층 .   평균 누출율 .   상아세관.  

  • 참고문헌 (29)

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  • 이 논문을 인용한 문헌 (2)

    1. Kim, Tae-Woo ; Chang, Seok-Woo ; Park, Dong-Sung 2008. "The effect of MTAD as a final root canal irrigants on the coronal bacterial leakage of obturated root canals" 大韓齒科保存學會誌 = Journal of Korean Academy of Operative Dentistry, 33(4): 397~404     
    2. Yu, Yi-Suk ; Kim, Tae-Gun ; Lee, Kwang-Won ; Yu, Mi-Kyung 2009. "EFFECT OF SOFT CHELATING IRRIGATION ON THE SEALING ABILITY OF GP/AH PLUS ROOT FILLINGS" 大韓齒科保存學會誌 = Journal of Korean Academy of Operative Dentistry, 34(6): 484~490     

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