改良型玻璃离子水门汀及复合体的边缘微漏研究  

Microleakage of Resin-Modified Glass Ionomer Cement and Compomer Restorations in vitro

作　　者：陆忆[1] 丁玲[1] 陆群[1] 

机构地区：[1]上海第二医科大学仁济医院口腔科,上海200001

出　　处：《上海第二医科大学学报》2001年第1期52-54,共3页Acta Universitatis Medicinalis Secondae Shanghai

摘　　要：目的比较两种树脂改良型玻璃离子水门汀及两种树脂复合体边缘封闭性。　方法选用 40颗成人离体恒磨牙 ,制备V类洞型 ,分别用两种树脂改良型光固化玻璃离子水门汀 (GCFujiⅡLC和VitremerTM)及两种多元酸修饰的树脂复合体 (Dyract复合体和F2 0 0 0复合体 )充填 ,经冷热交替试验 (5～ 5 5℃ ,循环 2 0次 ) ,采用 1%碱性品红染料渗入法观察充填体与牙体洞壁间边缘微漏。　结果在V类洞牙合壁及龈壁 4种不同材料的边缘封闭性存在显著差异 (P =0 .0 2 6 ,P =0 .0 0 0 ) ,牙合壁侧GCFujiⅡLC组显著优于其它各组 ,龈壁侧Dyract复合体组显著比其它各组差。　结论牙面的不同处理及充填材料的聚合收缩、吸水率以及热膨胀系数的差异等都是影响微漏的因素。树脂改良型光固化玻璃离子水门汀边缘封闭性优于树脂复合体。Objective To evaluate the marginal integrity of restoration in two types of mate rials , or resin-modified glass ionomer cement and polyacid-modified composite resin (compomer). Methods Restorations of four kinds of material (GC Fuji Ⅱ LC, Vitremer TM , Dyract compomer and F2000 compomer) were placed in the facial Class Ⅴ cavity preparations in forty noncarious human molar teeth. The teeth were randomly assigned to 4 experimental groups of 10 teeth each. After thermal cycling(×20,5 ～ 55℃), the teeth were immersed in 1% basic fuchsin dye for 24 hours at room temperature. Staining along the teeth restoration interface was recorded. Results The data indicated significant differences between all the restorative materials for both occlusal and gingival scores (P=0.026,P=0.000)respectively. Further analysis revealed there were statistically significant differences between GC Fuji Ⅱ LC and others on occlusal margins versus Dyract compomer and others on gingival margins. Conclusion Factors such as dental conditioning, rates of water absorption and thermal coefficient were related to microleakage. Resin-modified glass ionomer cement showed less microleakage than polyacid-modified composite resin tested.

关 键 词：树脂改良型玻璃离子水门汀 树脂复合体 微漏 牙科材料 楔伏缺损 修复 

分 类 号：R781.05[医药卫生—口腔医学] R783.1[医药卫生—临床医学]