CAJ | 학술논문

复合体组：载银软衬-树脂复合体8块，37℃蒸馏水浸泡24 h；复合体老化组：载银软衬-树脂复合体8块，冷热循环4000次；基托树脂老化组：8对树脂块冷热循环4000次后，制成载银软衬-树脂复合体8块。复合体组与复合体老化组拉伸强度（MPa）分别为2．683±0．435和2．179±0．633（P＞0．05），试件断裂模式以内聚破坏为主。基托树脂老化组拉伸强度（MPa）为1．460±0．566（与前2组比较，P＜0．05），试件断裂模式以粘接破坏为主。表明冷热循环对载银软衬材料拉伸强度无明显影响。
복합체조：재은연츤-수지복합체8괴，37℃증류수침포24 h；복합체노화조：재은연츤-수지복합체8괴，랭열순배4000차；기탁수지노화조：8대수지괴랭열순배4000차후，제성재은연츤-수지복합체8괴。복합체조여복합체노화조랍신강도（MPa）분별위2．683±0．435화2．179±0．633（P＞0．05），시건단렬모식이내취파배위주。기탁수지노화조랍신강도（MPa）위1．460±0．566（여전2조비교，P＜0．05），시건단렬모식이점접파배위주。표명랭열순배대재은연츤재료랍신강도무명현영향。
16 standered acrylic resin blocks with silicone resilient denture liner(10 mm ×8 mm ×3 mm)incorporated with nano-silver par-ticles at 5% (m/m,by dry wet)in-between were prepared.8 blocks were immersed in distilled water for 24 h at 37 ℃ as the controls (group 1).Another 8 were thermocycled for 4 000 cycles(group 2).16 acrylic resin bars were thermal cycled for 4 000 cycles.Then they were processed exactly as the control group (group 3).Tensile bond strength of the specimens was measured by a universal testing machine. The bond strength values(MPa)of group 1,2 and 3 were 2.683 ±0.435,2.179 ±0.633 and 1.460 ±0.566 respectively(group 1 vs 2,P>0.05;group 3 vs 1 or 2,P<0.05).The failure mode of the blocks in group 1 and 2 was mainly cohesive failure,in group 3 adhesion fail-ure.