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Evaluation of shear-bond strength between different self-adhesive resin cements with phosphate monomer and zirconia ceramic before and after thermocycling

인산염계 기능성 단량체가 첨가된 수종의 자가 접착 레진시멘트와 지르코니아 세라믹 사이 열순환 전후 전단결합강도 비교

  • Lee, Ji-Hun (Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University) ;
  • Kim, Min-Kyung (Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University) ;
  • Lee, Jung-Jin (Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University) ;
  • Ahn, Seung-Geun (Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University) ;
  • Park, Ju-Mi (Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University) ;
  • Seo, Jae-Min (Department of Prosthodontics, School of Dentistry and Institute of Oral Bio-Science, Chonbuk National University)
  • 이지훈 (전북대학교 치의학전문대학원 치과보철학교실 및 구강생체과학연구소) ;
  • 김민경 (전북대학교 치의학전문대학원 치과보철학교실 및 구강생체과학연구소) ;
  • 이정진 (전북대학교 치의학전문대학원 치과보철학교실 및 구강생체과학연구소) ;
  • 안승근 (전북대학교 치의학전문대학원 치과보철학교실 및 구강생체과학연구소) ;
  • 박주미 (전북대학교 치의학전문대학원 치과보철학교실 및 구강생체과학연구소) ;
  • 서재민 (전북대학교 치의학전문대학원 치과보철학교실 및 구강생체과학연구소)
  • Received : 2015.07.17
  • Accepted : 2015.08.19
  • Published : 2015.10.30

Abstract

Purpose: This study compared shear bond strengths of five self-adhesive cements with phosphate monomer to zirconium oxide ceramic with and without airborn particle abrasion. Materials and methods: One hundred zirconia samples were air-abraded ($50{\mu}mAl_2O_3$). One hundred composite resin cylinders were fabricated. Composite cylinders were bonded to the zirconia samples with either Permacem 2.0 (P), $Clearfil^{TM}$ SA Luting (C), $Multilink^{(R)}$ Speed (M), $RelyX^{TM}$ U200 Automix (R), G-Cem $LinkAce^{TM}$ (G). All bonded specimens were stored in distilled water ($37^{\circ}C$) for 24 h and half of them were additionally aged by thermocycling ($5^{\circ}C$, $55^{\circ}C$, 5,000 times). The bonded specimens were loaded in shear force until fracture (1 mm/min) by using Universal Testing Machine (Model 4201, Instron Co, Canton, MA, USA). The failure sites were inspected under field-emission scanning electron microscopy. The data was analyzed with ANOVA, Tukey HSD post-hoc test and paired samples t-test ($\alpha$=.05). Results: Before and after thermocycling, $Multilink^{(R)}$ Speed (M) revealed higher shear-bond strength than the other cements. G-Cem $LinkAce^{TM}$ (G) showed significantly lower bond strengths after thermocycling than before treatment (P<.05), but the other groups were not significantly different (P>.05). Conclusion: Most self-adhesive cements with phosphate monomer showed high shear bond strength with zirconia ceramic and weren't influenced by thermocycling, so they seem to valuable to zirconia ceramic bonding.

목적: 본 연구에서는 서로 다른 인산염계 기능성 단량체가 첨가된 5종의 자가 접착 레진시멘트와 지르코니아 사이의 열순환 전후 전단결합강도를 비교 평가하고자 하였다. 재료 및 방법: Airborne particle abrasion ($50{\mu}m$ $Al_2O_3$)을 시행한 디스크 모양의 Y-TZP 지르코니아 블록을 총 100개 준비하였다. 그리고 composite resin cylinder ($Filtek^{TM}$ Z250, 3M ESPE, St. Paul, MN, USA) 100개를 준비하였다. 서로 다른 인산염계 기능성 단량체가 첨가된 5종의 이중 중합형 자가 접착 레진시멘트 즉, Permacem 2.0 (DMG, Hamburg, Germany), $Clearfil^{TM}$ SA Luting (Kuraray Medical, Tokyo, Japan), $Multilink^{(R)}$ Speed (Ivoclar Vivadent, Schaan, Liechtenstein), $RelyX^{TM}$ U200 Automix (3M ESPE, Neuss, Germany), G-Cem $LinkAce^{TM}$ (GC Corporation, Tokyo, Japan)를 이용하여 지르코니아 블록과 composite resin cylinder를 접착하고 1군당 20개의 시편을 갖는 5개의 군을 만들었다. 시편을 $37^{\circ}C$ 의 증류수에 24시간 동안 보관한 후 각 군의 시편 절반(n=10)은 곧 바로 그리고 나머지 절반(n=10)은 5000회 열순환(5 - $55^{\circ}C$) 후에 전단결합강도를 측정하였다. 파절면은 FE-SEM을 이용하여 관찰하였다. 통계분석은 레진시멘트 종류 및 열순환 유무에 따른 전단결합강도의 비교를 위해 Two/One-way ANOVA를 시행하고 Tukey HSD post-hoc test를 이용하여 사후 검정하였으며, 열순환 전후의 비교를 위해 paired t-test를 이용하였다($\alpha$=.05). 결과: 열순환 전과 후 모두 $Multilink^{(R)}$ Speed 군은 나머지 4종류의 시멘트 군 보다 큰 전단결합강도를 나타내었다. G-Cem $LinkAce^{TM}$ 군은 열순환 전과 비교하여 열순환 후에 유의하게 낮은 전단결합강도를 나타내었지만, 다른 4종류 군은 열순환 전후 유의한 차이가 없었다. 결론: 인산염계 단량체를 포함한 대부분의 이중 중합형 자가 접착 레진시멘트는 지르코니아와 높은 전단결합강도를 보이고 열순환에 의해 유의한 영향을 받지 않아 지르코니아 보철물의 접착에 유용할 것이라고 사료된다.

Keywords

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