Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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EFFECT OF IRRIGATION METHODS ON THE ADHESION OF RESILON/EPIPHANY SEALER AND GUTTA-PERCHA/AH 26 SEALER TO INTRACANAL DENTIN

근관 세척법이 Resilon/Epiphany sealer와 Gutta-percha/AH 26 sealer의 근관 상아질과의 접착에 미치는 영향

  • Kim, Seo-Kyong (Department of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University, BK21) ;
  • Hwang, Yun-Chan (Department of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University, BK21) ;
  • Hwang, In-Nam (Department of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University, BK21) ;
  • Oh, Won-Mann (Department of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University, BK21)
  • 김서경 (전남대학교 치의학전문대학원 보존학교실, 치의학 연구소, BK21) ;
  • 황윤찬 (전남대학교 치의학전문대학원 보존학교실, 치의학 연구소, BK21) ;
  • 황인남 (전남대학교 치의학전문대학원 보존학교실, 치의학 연구소, BK21) ;
  • 오원만 (전남대학교 치의학전문대학원 보존학교실, 치의학 연구소, BK21)
  • Published : 2008.03.31
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Abstract

The purpose of this study was to evaluate whether intracanal irrigation method could affect the adhesion between intracanal dentin and root canal filling materials (Gutta-percha/AH 26 sealer and Resilon/Epiphany sealer). Thirty extracted human incisor teeth were prepared. Canals were irrigated with three different irrigation methods as a final rinse and obturated with two different canal filling materials (G groups: Gutta-percha/AH 26 sealer, R groups: Resilon/Epiphany sealer) respectively. Group G1, R1-irrigated with 5.25% NaOCl Group G2, R2-irrigated with 5.25% NaOCl, sterile saline Group G3, R3-irrigated with 5.25% NaOCl, 17% EDTA, sterile saline Thirty obturated roots were horizontally sliced and push-out bond strength test was performed in the universal testing machine. After test, the failure patterns of the specimens were observed using Image-analyzing microscope. The results were as follows. 1. Gutta-percha/AH 26 sealer groups had significantly higher push-out bond strength compared with the Resilon/Epiphany sealer groups (p < 0.05). 2. Push-out bond strength was higher when using 17% EDTA followed by sterile saline than using NaOCl as a final irrigation solution in the Resilon/Epiphany sealer groups (p < 0.05). 3. In the failure pattern analysis, there was no cohesive failure in Group G1, G2, and R1. Gutta-percha/AH 26 sealer groups appeared to exhibit predominantly adhesive and mixed failure patterns, whereas Resilon/Epiphany sealer groups exhibited mixed failures with the cohesive failure occurred within the Resilon substrate.

본 연구에서는 근관 세척법이 두 가지 근관 충전재 (Gutta-percha/AH 26 sealer, Resilon/Epiphany sealer)의 근관 상아질과의 접착에 미치는 영향을 평가하였다. 총 30개의 발거된 상악 전치를 각각 5개씩 6개의 군으로 분류하여 근관 성형을 하고 마지막 세척을 다음과 같이 시행한 후 G1, G2, G3 군은 Gutta-percha/AH 26 sealer로, R1, R2, R3 군은 Resilon/Epiphany sealer로 근관 충전하였다. G1, R1군 : 5.25% NaOCl 세척 G2, R2군 : 5.25% NaOCl 세척 후 sterile saline세척 G3, R3군 : 5.25% NaOCl 세척 후 17% EDTA, sterile saline 순으로 세척 각 군의 충전된 치아를 아크릴 레진에 매몰하고 약 1 mm두께로 절단한 후 만능 물성 시험기상에서 push-out bond strength를 측정하였고 실험 후 파절 양상을 Image-analyzing microscope으로 관찰하여 다음과 같은 결과를 얻었다. 1. Gutta-percha/AH 26 sealer 충전군에서 Resilon/Epiphany sealer 충전군보다 push-out bond strength가 높게 나타났다 (p < 0.05). 2. Resilon/Epiphany sealer 충전군 중 17% EDTA, sterile saline순으로 세척시 5.25% NaOCl 세척에 비해 push-out bond strength가 높게 나타났다 (p < 0.05). 3. 파절 양상을 분석시 모든 군은 접착성과 혼합성 파절 양상을 나타내었고, G1, G2, R1 군은 응집성 파절 양상이 나타나지 않았으며, Resilon/Epiphany sealer 충전군은 Gutta-percha/AH 26 sealer 충전군에 비해 응집성과 혼합성 파절 양상이 더 높은 비율로 나타났다.

Keywords

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