自制纳米羟磷灰石复合树脂与牙体之间微渗漏的实验研究  

Experimental study on microleakage between a new nano-hydroxyapatite composite and tooth

作　　者：赵蒙蒙[1] 王青山[1] 王爽[1] 李瑞[2] 

机构地区：[1]滨州医学院附属医院口腔内科 [2]滨州市人民医院口腔科,滨州256600

出　　处：《华西口腔医学杂志》2013年第3期300-302,309,共4页West China Journal of Stomatology

基　　金：山东省自然科学基金资助项目(Y2008C159)

摘　　要：目的检测自制纳米羟磷灰石(NHA)复合树脂与牙体组织之间的边缘密合性。方法健康离体前磨牙30颗制备Ⅰ类洞型,随机分成3组,分别用NHA复合树脂(A组)、卡瑞斯玛复合树脂(B组)、玻璃离子水门汀(C组)充填修复,经冷热循环实验后,采用2%亚甲基蓝染料渗入法观察充填材料与牙体洞壁间边缘微渗漏的情况。结果 A、B、C组染料的渗漏深度分别为(1.20±0.81)、(1.94±0.70)、(1.73±0.54)mm,3组之间的差异无统计学意义(P>0.05);3组间渗漏程度的差异也无统计学意义(P>0.05)。结论作为一种新型牙体修复材料,NHA复合树脂与牙体组织之间具有良好的黏结性能。Objective To evaluate the marginal adaptation between the new nano-hydroxyapatite composite resin and tooth. Methods Thirty extracted healthy premolars were randomly assigned to three groups according to the ma- terial employed： New nano-hydroxyapatite composite resin （Group A）, Karisma composite resin （Group B）, and glass ionomer cement （Group C）. After the thermal cycling, the teeth were immersed in 2% methylene blue dye, and the depth of microleakage between the composite and tooth structure were observed. Results The microleakage depth of group A, B and C were （1.20±0.81）, （1.94±0.70）, and （1.73±0.54）ram, respectively. No statistically significant diffe- rences were found among the three groups （P〉0.05）. There was no significant difference in the degree of microleakage （P〉0.05）. Conclusion As a new dental restorative material, new nano-hydroxyapatite composite resin has good bon- ding performance to the tooth structure.

关 键 词：纳米羟磷灰石 边缘封闭性 黏结 微渗漏 

分 类 号：R783.1[医药卫生—口腔医学]