법랑질 복합레진 수복시 접착부의 피로파괴에 관한 실험적 연구 = (An) experimental study on the fatigue fracture of composite bond to enamel surface

다국어 초록 (Multilingual Abstract)

This study was to evaluate the fatigue characteristics of composite bond to enamel surface and the effect of thermocycling on changes of bond strength and hardness of Prisma AP.H. and Z100.
Fatigue life was measured using the electro-magnetic type fatigue machine and the thermocycling test was conducted on the condition of 15 second dwell time each in 5 ˚C and 55 ˚C hath.
The results obtained were summarized as follows;
1. Linear regression analysis between the stress level and the fatigue life was high negative correlation.
2. The fatigue characteristic of composite bond of Zl00 was superior to Prisma AP.H. when a cyclic flexure stress- was applied.
3. Tensile bond strengths were l74.26 ± 72.97 kg/㎠ at Prisma AP.H. and 175.76 ± 59.07 kg/㎠ at Z100, and didn’t show a significant difference. The degradation of bond strength of Z100 was larger than that of Prisma AP.H. after 250 and 500 cycles.
4. Knoop hardness numbers were 52.70 ± 1.73 kg/㎟ at Prisma AP.H. and 94.54 ± 3.21 kg/㎟ at Z100, and showed a significant difference (P < 0.01).
5. In the surface layer, cracks and micropores were observed after thermocycling.

목차 (Table of Contents)

• 목차
• 영문초록 = 1
• 제1장 서론 = 3
• 제2장 실험재료 및 방법 = 7
• 제3장 실험성적 = 19
• 제4장 총괄 및 고찰 = 28
• 제5장 결론 = 35
• 참고문헌 = 36
• 논문사진부도 = 45