CAJ | 학술논문

目的：观察原花青素（PA）联合乙醇湿粘结技术对树脂乳牙牙本质剪切粘结强度的影响。方法：选取乳磨牙35颗，沿近远中向劈开，制成70个样本。将实验牙随机分为5组，分别为PA＋乙醇溶液预处理60 s和120 s组；乙醇单独预处理60 s和120 s组；对照组的牙本质树脂粘结试件。电子万能试验机测定37℃水浴保存24 h和30 d的剪切粘结强度；扫描电镜观察断裂面形态。结果：PA＋乙醇预处理组剪切粘结强度值明显大于乙醇单独预处理组和对照组（P＜0．05），FESEM观察结果显示PA＋乙醇预处理组断裂主要发生在混合层顶部。结论：原花青素和乙醇湿粘结技术联合使用可以提高树脂乳牙牙本质间的剪切粘结强度。
목적：관찰원화청소（PA）연합을순습점결기술대수지유아아본질전절점결강도적영향。방법：선취유마아35과，연근원중향벽개，제성70개양본。장실험아수궤분위5조，분별위PA＋을순용액예처리60 s화120 s조；을순단독예처리60 s화120 s조；대조조적아본질수지점결시건。전자만능시험궤측정37℃수욕보존24 h화30 d적전절점결강도；소묘전경관찰단렬면형태。결과：PA＋을순예처리조전절점결강도치명현대우을순단독예처리조화대조조（P＜0．05），FESEM관찰결과현시PA＋을순예처리조단렬주요발생재혼합층정부。결론：원화청소화을순습점결기술연합사용가이제고수지유아아본질간적전절점결강도。
Objeetive:To evaluate the effect of proanthocyanidins combined with ethanol-wet bonding technique on shear bond strength of primary teeth dentin. Method:35 stranded primary molars were used and spilted along mesial-distal, to make into 70 forty dentine specimens.Concentration of proanthocyanidins is 6.5 %.Randomly divided into five groups.Re-spectively is proanthocyanidins and ethanol treated 60 s and 120 s;ethanol alone treated 60 s and 120 s;the control group;Then kept in 37℃distilled water bath to measure the shear bond strengths (SBS) of 24 h and 30 d,to determine the fail-uremodes by scanning electronic microscopy. Result:Shear bond strength of proanthocyanidins and ethanol group was sig-nificantly higher than ethanol and controlgroup(P <0.05),FSEM results showed that proanthocyanidins and ethanol group is mostly fractured at the bottom of mixed layer. Conclusion:proanthocyanidins combined with ethanol-wet bonding technique can improve the shear bond strength of primary teeth dentin.