Ribeirão Preto Dental School, University of São Paulo, Ribeirão Preto, SP, Brazil.
J Appl Oral Sci. 2010 Jan-Feb;18(1):30-6. doi: 10.1590/s1678-77572010000100007.
The purpose of this study was to evaluate, by shear bond strength (SBS) testing, the influence of different types of temporary cements on the final cementation using conventional and self-etching resin-based luting cements.
Forty human teeth divided in two halves were assigned to 8 groups (n=10): I and V (no temporary cementation); II and VI: Ca(OH)2-based cement; III and VII: zinc oxide (ZO)-based cement; IV and VIII: ZO-eugenol (ZOE)-based cement. Final cementation was done with RelyX ARC cement (groups I to IV) and RelyX Unicem cement (groups V to VIII). Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level.
Means were (MPa): I - 3.80 (+/-1.481); II - 5.24 (+/-2.297); III - 6.98 (+/-1.885); IV - 6.54 (+/-1.459); V - 5.22 (+/-2.465); VI - 4.48 (+/-1.705); VII - 6.29 (+/-2.280); VIII - 2.47 (+/-2.076). Comparison of the groups that had the same temporary cementation (Groups II and VI; III and VII; IV and VIII) showed statistically significant difference (p<0.001) only between Groups IV and VIII, in which ZOE-based cements were used. The use of either Ca(OH)2-based (Groups II and VI) or ZO-based (Groups III and VII) cements showed no statistically significant difference (p>0.05) for the different luting cements (RelyX ARC and RelyX Unicem). The groups that had no temporary cementation (Groups I and V) did not differ significantly from each other either (p>0.05).
When temporary cementation was done with ZO- or ZOE-based cements and final cementation was done with RelyX ARC, there was an increase in the SBS compared to the control. In the groups cemented with RelyX Unicem, however, the use of a ZOE-based temporary cement affected negatively the SBS of the luting agent used for final cementation.
本研究通过剪切粘结强度（SBS）测试，评估不同类型的暂封材料对使用传统自酸蚀树脂粘结剂进行最终粘结的影响。
将 40 个人工牙分为两半，分为 8 组（n=10）：I 组和 V 组（不进行暂封）；II 组和 VI 组：氢氧化钙基暂封材料；III 组和 VII 组：氧化锌（ZO）基暂封材料；IV 组和 VIII 组：ZO-丁香酚（ZOE）基暂封材料。最终粘结分别使用 RelyX ARC 粘结剂（I 组至 IV 组）和 RelyX Unicem 粘结剂（V 组至 VIII 组）。数据采用方差分析和 Tukey 检验进行统计学分析，显著性水平为 5%。
平均值（MPa）为：I 组-3.80（+/-1.481）；II 组-5.24（+/-2.297）；III 组-6.98（+/-1.885）；IV 组-6.54（+/-1.459）；V 组-5.22（+/-2.465）；VI 组-4.48（+/-1.705）；VII 组-6.29（+/-2.280）；VIII 组-2.47（+/-2.076）。比较具有相同暂封材料的组（II 组和 VI 组；III 组和 VII 组；IV 组和 VIII 组），仅在使用 ZOE 基暂封材料的 IV 组和 VIII 组之间存在统计学显著差异（p<0.001）。使用氢氧化钙基（II 组和 VI 组）或 ZO 基（III 组和 VII 组）暂封材料的组之间，对于不同的粘结剂（RelyX ARC 和 RelyX Unicem），无统计学显著差异（p>0.05）。没有进行暂封的组（I 组和 V 组）之间也没有显著差异（p>0.05）。
当使用 ZO 或 ZOE 基暂封材料进行暂封，并用 RelyX ARC 进行最终粘结时，与对照组相比，SBS 增加。然而，在用 RelyX Unicem 粘结时，使用 ZOE 基暂封材料会对最终粘结用的粘结剂的 SBS 产生负面影响。
