Cantoro Amerigo, Goracci Cecilia, Carvalho Carlos Augusto, Coniglio Ivanovic, Ferrari Marco
Department of Dental Materials and Fixed Prosthodontics, University of Siena, Policlinico Le Scotte, viale Bracci, Siena 53100, Italy.
J Dent. 2009 Jun;37(6):454-61. doi: 10.1016/j.jdent.2009.02.006. Epub 2009 Mar 31.
To assess whether the bonding potential to dentin of self-adhesive resin cements was affected by their pre-cure temperature.
Composite overlays (Paradigm MZ100, 3M ESPE) were luted on 100 extracted molars with G-Cem (GC Corp.), BisCem (Bisco), Multilink Sprint (Ivoclar Vivadent), SAC-A (Kuraray Co.), XP Bond/Calibra (Detrey Dentsply). The cements were used at pre-cure temperatures that recur in their handling (4 degrees C refrigerator, 24 degrees C room and 37 degrees C intraoral), as well as following pre-heating up to 60 degrees C. Microtensile bond strengths to dentin were measured and compared with statistical tests. Scanning electron microscope observations of cement-dentin interfaces were performed.
The bond strength of G-Cem and Calibra was not significantly affected by temperature changes from refrigerator storage to intraoral application. At any assessed pre-cure temperature the total-etch luting agent Calibra achieved a significantly stronger adhesion than the auto-adhesive cements. Limited to null adhesion was yielded by BisCem and SAC-A. The procedure of 60 degrees C pre-heating, proposed in previous studies for restorative resin composites, was of no use for the tested luting agents. Only the total-etch luting agent Calibra developed a distinct hybrid layer. The self-adhesive cements exhibited a more superficial interaction with dentin.
Regardless of the pre-cure temperature, the bonding potential of the self-adhesive resin cements was inferior to that of the total-etch luting agent tested as control. The adhesive properties of the BisCem and SAC-A were extremely scarce.
评估自黏结树脂水门汀对牙本质的黏结潜力是否受其预固化温度的影响。
用G-Cem（GC公司）、BisCem（Bisco公司）、Multilink Sprint（义获嘉伟瓦登特公司）、SAC-A（可乐丽公司）、XP Bond/Calibra（迪特里登士柏公司）将复合树脂贴面（3M ESPE公司的Paradigm MZ100）黏结到100颗拔除的磨牙上。水门汀在其操作过程中反复出现的预固化温度下使用（4℃冰箱、24℃室温、37℃口腔内温度），以及预热至60℃后使用。测量牙本质微拉伸黏结强度，并通过统计学检验进行比较。对水门汀与牙本质界面进行扫描电子显微镜观察。
从冰箱储存温度到口腔内使用温度的变化，对G-Cem和Calibra的黏结强度没有显著影响。在任何评估的预固化温度下，全酸蚀黏结剂Calibra的黏附力都明显强于自黏结水门汀。BisCem和SAC-A产生的黏附力有限甚至没有黏附力。先前研究中针对修复性树脂复合材料提出的60℃预热程序，对测试的黏结剂没有作用。只有全酸蚀黏结剂Calibra形成了明显的混合层。自黏结水门汀与牙本质的相互作用更表浅。
无论预固化温度如何，自黏结树脂水门汀的黏结潜力均低于作为对照测试的全酸蚀黏结剂。BisCem和SAC-A的黏附性能极差。
