Miletic Vesna, Pongprueksa Pong, De Munck Jan, Brooks Neil R, Van Meerbeek Bart
KU Leuven BIOMAT, Department of Oral Health Sciences, KU Leuven (University of Leuven), Belgium; University of Belgrade, School of Dental Medicine, Belgrade, Serbia.
J Dent. 2013 Oct;41(10):918-26. doi: 10.1016/j.jdent.2013.07.007. Epub 2013 Aug 2.
To compare the degree of conversion (DC) of adhesives initiated by diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) or a camphorquinone/tertiary amine system (CQ/Amine) as well as their 'immediate' micro-tensile bond strength (μTBS) to bur-cut dentine.
DC of Scotchbond Universal ('SBU'; 3M ESPE), its experimental counterpart containing TPO as photo-initiator system, an experimental G-aenial Bond ('Ga-B'; GC) adhesive formulation, and an experimental LUB-102 adhesive formulation ('LUB', Kuraray Noritake), containing as photo-initiatior system either 2wt% CQ along with 2wt% tertiary amine ('SBU_CQ/Amine'; 'Ga-B_CQ/Amine'; 'LUB_CQ/Amine'), or 2wt% TPO ('SBU_TPO'; 'Ga-B_TPO'; 'LUB_TPO'), was determined using Fourier-transform infrared spectroscopy (FTIR), after being cured with a dual-wavelength light-curing unit (bluephase 20i, Ivoclar Vivadent). The same adhesive formulations were applied to bur-cut mid-coronal dentine of intact human molars, and subjected to a μTBS test after 1-week water storage. Besides being applied following a self-etch (SE) application mode, the adhesive formulations SBU_CQ/Amine and SBU_TPO were also applied following an etch-and-rinse (E&R) mode, this both for DS and μTBS measurement.
No significant difference in DC was found for any of the adhesive formulations, except for SBU_CQ/Amine_SE and SBU_TPO_SE. For both SBU formulations, a significantly higher DC was reached for the E&R than the SE approach. Regarding μTBS, no significant differences were recorded, except for the significantly higher μTBS measured for SBU_CQ/Amine_E&R and SBU_TPO_E&R.
In self-etch adhesives, the photo-initiator TPO may be used instead of CQ/Amine. The curing and 'immediate' bonding efficiency depended on the application protocol (E&R versus SE), but not on the photo-initiator system.
The photo-initiator TPO may be used in self-etch adhesives instead of CQ/Amine with similar curing and 'immediate' bonding efficiency.
比较由二苯基（2,4,6-三甲基苯甲酰基）氧化膦（TPO）或樟脑醌/叔胺体系（CQ/胺）引发的粘合剂的转化率（DC），以及它们与车针切割牙本质的“即时”微拉伸粘结强度（μTBS）。
使用傅里叶变换红外光谱（FTIR）测定3M ESPE公司的Scotchbond Universal（“SBU”）、含有TPO作为光引发体系的实验对应物、实验性的G-aenial Bond（“Ga-B”；GC）粘合剂配方以及实验性的LUB-102粘合剂配方（“LUB”，可乐丽诺芮特）的DC，这些粘合剂在用双波长光固化单元（bluephase 20i，义获嘉伟瓦登特）固化后进行测定。这些粘合剂配方应用于完整人类磨牙的车针切割中冠部牙本质，并在储存1周后进行μTBS测试。除了按照自酸蚀（SE）应用模式应用外，粘合剂配方SBU_CQ/胺和SBU_TPO还按照酸蚀冲洗（E&R）模式应用，用于DS和μTBS测量。
除了SBU_CQ/胺_SE和SBU_TPO_SE外，任何粘合剂配方的DC均未发现显著差异。对于两种SBU配方，E&R方法的DC显著高于SE方法。关于μTBS，除了SBU_CQ/胺_E&R和SBU_TPO_E&R测得的μTBS显著较高外，未记录到显著差异。
在自酸蚀粘合剂中，可以使用光引发剂TPO代替CQ/胺。固化和“即时”粘结效率取决于应用方案（E&R与SE），而不是光引发体系。
光引发剂TPO可用于自酸蚀粘合剂中代替CQ/胺，具有相似的固化和“即时”粘结效率。
