The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

THE EFFECT OF THERMOCYCLING ON BOND STRENGTH BETWEEN METAL AND RESIN CEMENT

Thermocycling이 금속과 레진시멘트간의 결합강도에 미치는 영향

  • Kang, Geon-Gu (Dept. of Prosthodontics, College of Dentistry, Chonbuk National University) ;
  • Chung, Kwan-Ho (Dept. of Prosthodontics, College of Dentistry, Chonbuk National University) ;
  • Choi, Jeong-Ho (Dept. of Prosthodontics, College of Dentistry, Chonbuk National University) ;
  • Ahn, Seung-Geun (Dept. of Prosthodontics, College of Dentistry, Chonbuk National University) ;
  • Song, Kwang-Yeob (Dept. of Prosthodontics, College of Dentistry, Chonbuk National University) ;
  • Park, Chan-Woon (Dept. of Prosthodontics, College of Dentistry, Chonbuk National University)
  • 강건구 (전북대학교 치과대학 보철학교실) ;
  • 정관호 (전북대학교 치과대학 보철학교실) ;
  • 최정호 (전북대학교 치과대학 보철학교실) ;
  • 안승근 (전북대학교 치과대학 보철학교실) ;
  • 송광엽 (전북대학교 치과대학 보철학교실) ;
  • 박찬운 (전북대학교 치과대학 보철학교실)
  • Published : 1996.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to evaluate the effect of thermocycling on bond strength between metal and resin cement according to thermocycling, and to observe the bond failure modes with optical microscope(X30). For this purpose, Super-Bond C & B and Panavia 21 resin cement were used. Metal specimens were made of Vera-Bond and the surface of specimens were sandblasted with $50{\mu}m$ aluminum oxide. All experimental groups were stored in $37^{\circ}C$ distilled water for 72 hours, followed by thermocycling between $5^{\circ}C$ and $55^{\circ}C$ with 15 second dwell time. 500, 1000, 2000 cycles of thermocycling were executed and the tensile bond strength was measured by Instron Universal Testing Machine(Model 4201) The obtained results were as follows : 1. Super-Bond C & B and Panavia 21 did not show statistically significant difference accor-ding to thermocycling test(P>0.05). 2. Super-Bond C & B specimens exhibited statistically significant higher tensile bond stre-ngth than Panavia 21 for all experimental groups(P<0.05). 3. Super-Bond C & B exhibited mixed mode failure with partial adhesive and partial cohe-sive failure, and most of Panavia 21 exhibited cohesive failure and some mixed mode failure.

Keywords