CAJ | 학술논문

目的研究脱敏剂对牙本质粘接剂剪切粘接强度的影响,以期为临床操作提供参考.方法将20个牙试件均分为实验组和对照组,每组10个;实验组牙本质表面涂布脱敏剂(极固宁TM);对照组不做任何处理.用牙本质粘接剂(Variolink Ⅱ)将铸瓷(IPS Empress)粘接于两组试件牙本质粘接面上,测试剪切粘接强度,扫描电镜(SEM)观察试件断面.结果实验组和对照组的剪切粘接强度分别为(5.53±0.96)MPa和(7.32±1.34)MPa,差异有统计学意义(P=0.003).SEM见实验组试件发生黏附破坏,对照组试件发生内聚破坏.结论牙本质表面涂布脱敏剂后可显著降低粘接剂的剪切粘接强度.
목적 연구탈민제대아본질점접제전절점접강도적영향,이기위림상조작제공삼고.방법 장20개아시건균분위실험조화대조조,매조10개;실험조아본질표면도포탈민제(겁고저TM);대조조불주임하처리.용아본질점접제(Variolink Ⅱ)장주자(IPS Empress)점접우량조시건아본질점접면상,측시전절점접강도,소묘전경(SEM)관찰시건단면.결과 실험조화대조조적전절점접강도분별위(5.53±0.96)MPa화(7.32±1.34)MPa,차이유통계학의의(P=0.003).SEM견실험조시건발생점부파배,대조조시건발생내취파배.결론 아본질표면도포탈민제후가현저강저점접제적전절점접강도.
Objective To evalume the effect of desensitizer on shear bond strength of adhesive system.Methods Twenty specimens were made and divided randomly into an experiment group and a control group.In the experiment group,the dentin bonding surface was applied with Green OrTM and in the control,the dentin bonding surface was untreated.The IPS-Empress specimens were bonded to the dentin bonding specimens using Variolink Ⅱ adhesive system. The shear bond strength of all testing samples was determined with Instron testing machine.The surfaces of the drawing sections were observed using the scanning electron microscope(SEM).Results The shear bond strength of the experimental group and the control group was(5.53±0.96)MPa and(7.32±1.34)MPa respectively and there was statistically significant difference between two groups(P:0.003).In the experimental group,adhesive failure was the most prevalent type of failure,while in the control group,cohesive failure Was the most prevalent type.Conclusions The application of Green OrTM on the dentin bonding surface decreased the shear bond strength between dentin and IPS-Empress specimens when using Variolink Ⅱ adhesive system.