The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Shear bond strength of a self-adhesive resin cement to resin-coated dentin

간접수복용 복합레진과 자가 접착 레진 시멘트의 전단결합강도에 레진코팅법이 미치는 영향

  • Hong, Jee-Youn (Department of Esthetic Restorative Dentistry, Graduate School of Clinical Dentistry, Korea University) ;
  • Park, Cheol-Woo (Department of Esthetic Restorative Dentistry, Graduate School of Clinical Dentistry, Korea University) ;
  • Heo, Jeong-Uk (Goodwill Dental Hospital) ;
  • Bang, Min-Ki (Goodwill Dental Hospital) ;
  • Ryu, Jae-Jun (Department of Esthetic Restorative Dentistry, Graduate School of Clinical Dentistry, Korea University)
  • 홍지연 (고려대학교 임상치의학대학원 심미수복학과) ;
  • 박철우 (고려대학교 임상치의학대학원 심미수복학과) ;
  • 허정욱 (굿윌치과병원) ;
  • 방민기 (굿윌치과병원) ;
  • 류재준 (고려대학교 임상치의학대학원 심미수복학과)
  • Received : 2012.10.10
  • Accepted : 2013.01.05
  • Published : 2013.01.31
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Abstract

Purpose: The aims of this study were to evaluate the effect of a resin coating on the shear bond strength of indirect composite restoration bonded to dentin with a self adhesive resin cement and to compare the shear bond strength with that of a conventional resin cement. Materials and methods: The occlusal enamels of thirty six extracted noncarious human molars were removed until the dentin flat surfaces of the teeth were exposed. Then, they were divided into 3 groups. The dentin surfaces of group 1 and 3 were left without any conditioning, while the dentin surfaces of group 2 were resin-coated with Clearfil SE bond and a flowable resin composite, Metafil Flo. After all specimens were temporized for 24 hours, indirect composite resin blocks fabricated by Tescera were bonded to dentins by Unicem for group 1 and 2, and by Panavia F for group 3. After 48 hours of water storage, shear bond strengths were measured. The data was analyzed with one-way analysis of variance and multiple comparison test (Tukey method). Results: The shear bond strengths of Unicem applied to resin coated dentin surfaces were significantly higher than those of Unicem and Panavia F used to uncoated dentin surfaces (P<.0001). Conclusion: Application of a resin coating to the dentin surface significantly improved the shear bonding strength of a self adhesive resin cement in indirect restoration.

연구 재료 및 방법: 본 연구에서는 간접 레진 수복시에 상아질 접착제와 저점도 레진을 이용한 상아질 레진코팅법을 자가 접착 레진 시멘트에 적용해 전단결합강도가 증가하는지 비교하고 기존의 레진 시멘트와의 전단결합강도 차이가 어떠한지 평가하고자 하였다. 연구 목적: 사람의 발거된 건전한 구치 36개의 치관부를 삭제하고 상아질을 노출시킨 후 3개의 군으로 분류하였다. 1군과 3군은 상아질에 아무런 처리 과정을 거치지 않고 2군만 Clearfil SE bond와 Metafil Flo를 사용해 상아질 레진코팅법을 시행하였다. 24시간의 임시수복 기간을 둔 후 Tescera를 이용하여 제작한 레진 인레이 블록을 1군과 2군에는 Unicem, 3군에는 Panavia F를 사용해 접착하였다. 그 후 증류수에 48시간 동안 보관한 후 전단결합강도를 측정하였다. 측정된 전단결합강도는 one-way ANOVA를 이용하여 비교 분석하였으며 유의한 차이가 있는 경우 Tukey method를 이용하여 multiple comparison를 시행하였다. 결과:상아질에 레진코팅법을 시행한 경우의 Unicem의 결합강도가 상아질에 아무런 처리를 하지 않은 대조군의 결합강도보다 높게 나타났고(P<.0001), 레진코팅을 하지 않고 Panavia F로 접착한 실험군의 결합강도보다 높게 나타났다(P<.0001). 결론: 상아질 레진코팅법은 자가 접착 레진 시멘트의 접착 강도를 증가시켰다.

Keywords

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