Corneal collagen cross-linking with UVA-riboflavin is currently the only method for preventing the progression of keratoconus from the pathological perspective. Topical application of a direct cross-linking agent is n...Corneal collagen cross-linking with UVA-riboflavin is currently the only method for preventing the progression of keratoconus from the pathological perspective. Topical application of a direct cross-linking agent is now attracting widespread attention in clinical settings..This article reviews the research progress in the application of indirect or direct cross-linking agents(e.g., riboflavin, glucose, ribose, glutaraldehyde,formaldehyde,.glyceraldehyde,.short chain aliphatic β-nitro alcohol, and genipin) in the treatment of corneal diseases and analyzes the cross-linking efficacy,.toxicity,.and merits and disadvantages of each cross-linking agent,.providing clinical information for further studies.展开更多
目的:探索3种交联剂对一种酸蚀-冲洗粘接剂Adper^(TM)Single Bond 2(SB2)的牙本质粘接性能的影响。方法:72颗人离体磨牙随机分为4组(n=18),分别应用蒸馏水,碳二亚胺(EDC,1 mol/L),表没食子儿茶素没食子酸酯(EGCG,0.1%)和核黄素(RF,0.1%...目的:探索3种交联剂对一种酸蚀-冲洗粘接剂Adper^(TM)Single Bond 2(SB2)的牙本质粘接性能的影响。方法:72颗人离体磨牙随机分为4组(n=18),分别应用蒸馏水,碳二亚胺(EDC,1 mol/L),表没食子儿茶素没食子酸酯(EGCG,0.1%)和核黄素(RF,0.1%)预处理后涂布SB2,然后制作树脂粘接试件。每种预处理方式的试件分为即刻组和老化组(n=9),对老化组样本行热循环处理。分别在粘接后24 h和热循环老化后检测剪切强度,观察断裂模式,并通过扫描电镜(SEM)观察粘接界面和界面纳米渗漏。双因素方差分析和Tukey检验分析剪切强度。结果:4组即刻组剪切强度差异无统计学意义(P>0.05),老化前后EDC和EGCG组剪切强度差异无统计学意义(P>0.05)。预处理方式和老化的交互作用差异有统计学意义(P<0.05)。断裂模式及SEM观察显示EDC和EGCG组具有良好的粘接界面。结论:EDC和EGCG预处理不影响SB2的即刻剪切强度,并可维持老化后的剪切强度,改善粘接界面。展开更多
文摘Corneal collagen cross-linking with UVA-riboflavin is currently the only method for preventing the progression of keratoconus from the pathological perspective. Topical application of a direct cross-linking agent is now attracting widespread attention in clinical settings..This article reviews the research progress in the application of indirect or direct cross-linking agents(e.g., riboflavin, glucose, ribose, glutaraldehyde,formaldehyde,.glyceraldehyde,.short chain aliphatic β-nitro alcohol, and genipin) in the treatment of corneal diseases and analyzes the cross-linking efficacy,.toxicity,.and merits and disadvantages of each cross-linking agent,.providing clinical information for further studies.
文摘目的:探索3种交联剂对一种酸蚀-冲洗粘接剂Adper^(TM)Single Bond 2(SB2)的牙本质粘接性能的影响。方法:72颗人离体磨牙随机分为4组(n=18),分别应用蒸馏水,碳二亚胺(EDC,1 mol/L),表没食子儿茶素没食子酸酯(EGCG,0.1%)和核黄素(RF,0.1%)预处理后涂布SB2,然后制作树脂粘接试件。每种预处理方式的试件分为即刻组和老化组(n=9),对老化组样本行热循环处理。分别在粘接后24 h和热循环老化后检测剪切强度,观察断裂模式,并通过扫描电镜(SEM)观察粘接界面和界面纳米渗漏。双因素方差分析和Tukey检验分析剪切强度。结果:4组即刻组剪切强度差异无统计学意义(P>0.05),老化前后EDC和EGCG组剪切强度差异无统计学意义(P>0.05)。预处理方式和老化的交互作用差异有统计学意义(P<0.05)。断裂模式及SEM观察显示EDC和EGCG组具有良好的粘接界面。结论:EDC和EGCG预处理不影响SB2的即刻剪切强度,并可维持老化后的剪切强度,改善粘接界面。
文摘目的:探讨葡萄籽提取物(grape seed extract,GSE)短暂预处理脱矿牙本质对其极限拉伸强度及树脂-牙本质即刻微拉伸粘接强度的影响。方法:以乙醇、丙酮、蒸馏水为溶剂配制不同浓度的GSE溶液,以溶剂为空白对照,无预处理为阴性对照,5%戊二醛为阳性对照,每组样本15例。GSE预处理脱矿牙本质后,测试牙本质极限拉伸强度及树脂-牙本质微拉伸粘接强度,观察粘接断裂面微观形貌并分析断裂模式。结果:GSE预处理组牙本质极限拉伸强度均呈浓度和时间依赖性增加。应用Single Bond 2粘接时,无论何种溶剂,10%或15%GSE预处理组微拉伸粘接强度显著高于空白对照组(P<0.05);而用Prime&Bond NT粘接时,仅15%GSE水溶剂组和10%GSE丙酮溶剂组微拉伸粘接强度显著高于空白对照组(P<0.05)。交联预处理对水和乙醇溶剂的Single Bond 2粘接时微拉伸粘接强度的改善作用比用水和丙酮溶剂的Prime&Bond NT粘接时更为显著。粘接试件断裂均以混合破坏为主,预处理组试件断裂多发生在混合层顶部,而阴性和空白对照组断裂多位于混合层底部。结论:GSE短暂预处理脱矿牙本质可改善其机械性能,增强混合层,并提高树脂-牙本质即刻微拉伸粘接强度。
