玻璃纤维桩黏结用自酸蚀和自粘接树脂水门汀的微拉伸粘结强度。
Microtensile bond strength of glass fiber posts cemented with self-adhesive and self-etching resin cements.
机构信息
Department of Dentistry, University of Ribeirão Preto, Uniaerp, Ribeirão Preto, Brazil.
出版信息
J Adhes Dent. 2011 Feb;13(1):55-9. doi: 10.3290/j.jad.a18396.
PURPOSE
To evaluate the bond strength of glass fiber posts to intraradicular dentin when cemented with self-etching and self-adhesive resin cements.
MATERIALS AND METHODS
Forty-eight single-rooted human teeth were decoronated, endodontically treated, post-space prepared and divided into 8 groups (n = 6). The glass fiber posts used were: Exacto (EA) (Angelus) and everStick (ES) (StichTeck), which were cemented with two self-adhesive resin cements: BisCem (BIS) (Bisco) and Rely-X Unicem (UNI) (3M/ESPE), and two self-etching resin cements: Esthetic Cementing System NAC100 (NAC) (Kuraray) and Panavia-F (PAN) (Kuraray). Specimens were thermocycled between 5°C and 55 °C for 1000 cycles and stored in water at 37°C for 1 month. Four 1-mm-thick (in cross section) rods were obtained from the cervical region of the roots. Specimens were then subjected to microtensile testing in a special machine (BISCO; Schaumburg, IL, USA) or a crosshead speed of 0.5 mm/min. Microtensile bond strength (μTBS) data were analyzed with two-way ANOVA and Tukey's tests.
RESULTS
Means (and SD) of μTBS (MPa) were: EA/PAN: 10.3 (4.1), EA/NAC: 14 (5.1) EA/BIS: 16.4 (4.8), EA/UNI: 19.8 (5.1), ES/PAN: 25.9 (6.1), ES/NAC: 29.1 (7), ES/BIS: 28.9 (6), ES/UNI: 30.5 (6.6). ANOVA indicated significant differences among the groups (p < 0.001). Mean μTBS values obtained with ES post were significantly higher than those obtained with EA (p < 0.001). For EA, Tukey's test indicated that higher μTBS means were obtained with the self-adhesive resin cements (BIS and UNI), which were statistically significantly different (p < 0.05) from values obtained with the self-etching resin cements (PAN and NAC). Different cements had no significant effects on the bond strength values of ES post (p > 0.05). μTBS values obtained with ES post were significantly higher than those obtained with EA post irrespective of the resin cement used.
CONCLUSION
everStick posts resulted in the highest mean μTBS values with all cements. Self-adhesive cements performed well in terms of bond strength.
目的
评估使用自酸蚀和自粘接树脂水门汀黏固玻璃纤维桩至根管内牙本质的粘结强度。
材料和方法
将 48 颗单根人牙截冠、根管治疗、根管预备并分为 8 组（每组 6 颗）。使用的玻璃纤维桩为：Exacto（EA）（Angelus）和 everStick（ES）（StichTeck），分别使用两种自粘接树脂水门汀：BisCem（BIS）（Bisco）和 Rely-X Unicem（UNI）（3M/ESPE），以及两种自酸蚀树脂水门汀：Esthetic Cementing System NAC100（NAC）（Kuraray）和 Panavia-F（PAN）（Kuraray）黏固。将样本在 5°C 和 55°C 之间进行 1000 次热循环，然后在 37°C 的水中储存 1 个月。从根颈部获得 4 个 1mm 厚（横截面）的棒。然后，将样本在特殊机器（BISCO；Schaumburg，IL，USA）或十字头速度为 0.5mm/min 下进行微拉伸测试。使用双因素方差分析和 Tukey 检验对微拉伸粘结强度（μTBS）数据进行分析。
结果
μTBS（MPa）的平均值（和 SD）为：EA/PAN：10.3（4.1），EA/NAC：14（5.1），EA/BIS：16.4（4.8），EA/UNI：19.8（5.1），ES/PAN：25.9（6.1），ES/NAC：29.1（7），ES/BIS：28.9（6），ES/UNI：30.5（6.6）。方差分析表明各组之间存在显著差异（p<0.001）。ES 桩的平均 μTBS 值明显高于 EA（p<0.001）。对于 EA，Tukey 检验表明，使用自粘接树脂水门汀（BIS 和 UNI）可获得更高的 μTBS 平均值，与使用自酸蚀树脂水门汀（PAN 和 NAC）相比，这些值具有统计学意义（p<0.05）。不同的水门汀对 ES 桩的粘结强度值没有显著影响（p>0.05）。使用 ES 桩获得的 μTBS 值明显高于使用 EA 桩获得的值，无论使用哪种树脂水门汀。
结论
everStick 桩在所有水门汀中均产生最高的平均 μTBS 值。自粘接水门汀在粘结强度方面表现良好。
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