Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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Microleakage of Endodontic Temporary Restorative Materials under Dynamic Loading

동적하중 하에서 근관치료용 임시충전재의 미세누출의 평가

  • Jung, Dong-Ho (Department of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
  • Noh, Young-Sin (Department of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
  • Lee, Hae-Doo (Department of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
  • Chang, Hoon-Sang (Department of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
  • Ryu, Hyun-Wook (Department of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
  • Min, Kyung-San (Department of Conservative Dentistry, College of Dentistry, Wonkwang University)
  • 정동호 (원광대학교 치과대학 치과보존학교실) ;
  • 노영신 (원광대학교 치과대학 치과보존학교실) ;
  • 이해두 (원광대학교 치과대학 치과보존학교실) ;
  • 장훈상 (원광대학교 치과대학 치과보존학교실) ;
  • 류현욱 (원광대학교 치과대학 치과보존학교실) ;
  • 민경산 (원광대학교 치과대학 치과보존학교실)
  • Published : 2008.05.30
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Abstract

The purpose of this study was to compare the sealing abilities of four endodontic temporary restorative materials using a methylene blue dye penetration test under dynamic loading. Standardized access cavities were prepared in forty-four intact human permanent molar teeth, and the cavities were restored with Caviton, MD-Temp, IRM, or ZOE. After thermocycling, an intermittent load of 98 N at 1 Hz was applied for 1,000 cycles to the long axis of the functional cusp of each of the teeth, which were immersed in a 1% methylene blue solution. The teeth were split in half, and the linear depth of dye penetration was evaluated according to the criteria. The results were analyzed using one-way ANOVA (p = 0.05) and Duncan's multiple range test. The results demonstrated that Caviton and MD-Temp showed significantly lower microleakage than IRM and ZOE. It was concluded that Caviton and MD-Temp exhibited better sealing ability than IRM and ZOE under dynamic loading.

본 연구의 목적은 동적하중 하에서 네 종류의 근관치료용 임시충전재의 밀폐효과를 비교하는 것이다. 44개의 건전한 인간 대구치에 표준화된 근관와동을 형성한 후 Caviton, MD-Temp, IRM 및 ZOE를 이용하여 충전하였다. 이 후, 1% 메틸렌블루 용액에 담근 상태에서 반복하중기를 이용하여 1 Hz의 속도로 98 N의 하중을 기능교두에 1,000번 가한 다음 시편을 양분해 미세누출을 평가하고 one-way ANOVA (p = 0.05)와 사후 검정으로 Duncan's multiple range tests로 통계분석 하였다. Caviton 군과 MD-Temp군이 IRM군과 ZOE군보다 통계적으로 적은 미세누출을 보였으며 (p < 0.05), 본 실험결과로 볼 때 Caviton과 MD-Temp가 IRM과 ZOE보다 동적하중 하에서 근관와동 밀폐효과가 우수하다고 사료된다.

Keywords

References

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  1. Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations vol.37, pp.1, 2012, https://doi.org/10.5395/rde.2012.37.1.29