摘要
目的：比较CGF-1／DE底胶与Dyract／PSA复合体粘接系统对人牙釉质和牙本质的剪切粘结强度（SBS）．方法：选择近期拔出的112个人上前牙分14组，用砂纸将唇面磨平至牙釉质或牙本质，按实验设计处理牙齿表面，按厂商说明使用材料井进行粘接，所有试件在37℃水中浸泡24h后在拉力试验机上以10mm／min的速度测试剪切粘接强度．结果：CGF-1／DE底胶、Dyract／PSA对牙釉质的SBS分别为5.79，6．24MPa，无显著性差异（P＞0．05）；对牙本质的SBS分别为6．72，9．84MPa，相差显著（P＜0．05）．结论：CGF－1／DE底胶系统对牙釉质的SBS与Dyract／PSA系统接近，对牙本质的SBS低于Dyract／PSA系统．
AIM: To compare shear bond strength (SBS) of CGF-1/DE primer with that of Dyract/PSA compomer bonding systems to human enamal or denim. METHODS: 112 human premaxillary teeth were randomly divided into 14 groups of 8 teeth in each. The exposed denim or enamel esuface were treated and bonded to CGF-1/DE primer or Dyract/PSA compomer bonding system according to the experimental design and manufactacture's instructions. All specimens were immersed in water for 24 h at 37 ℃ and then loaded in a shear mode in a tensile testing machine at a crosshead speed of 10mm/min. The SBS values were measured and the data were analyzed using ANOVA and Student-Newman-Keuls test.RESULTS: The SBS of CGF-1/DE primer and Dyract/PSA compomer bonding systems were 5. 79 MPa and 6. 24 MPa (P>0. 05), and to human enamal 6. 72 MPa and 9. 84 MPa (P<0. 05) to denim. CONCLUSIONS: To enamel, the SBS of CGF-1/DE primer is similar to that of Dyract/PSA system,and to denim, the SBS of CGF-1/DE primer is significantly lower than that of Dyract/PSA.
出处
《第四军医大学学报》
1999年第3期236-238,共3页
Journal of the Fourth Military Medical University
