Effect of pre-etching enamel on fatigue of self-etch adhesive bonds
Effect of pre-etching enamel on fatigue of self-etch adhesive bonds
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DOI：
10.1016/j.dental.2007.03.002
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发表时间：
2008-01-01
期刊：
影响因子：
5
通讯作者：
Feilzer, Albert J.
中科院分区：
文献类型：
--
作者：
Erickson, Robert L.;De Gee, Anton J.;Feilzer, Albert J.
Objective.先前的研究发现，自酸蚀粘合剂Adper Adhet-L-Pop（PLP）对牛牙釉质的剪切粘合强度（SBS）是使用蚀刻和冲洗材料SingleBond时的75%，而剪切疲劳极限（SFL）的比较值在10（5）次负载循环时仅为58%。对于PLP，树脂渗透到牙釉质表面中的量明显较少，但不能确定这是上述结果较低的原因。本研究的目的是确定预蚀刻牙釉质是否会大大改善PLP粘合剂的SBS和SFL，超过先前研究中发现的那些。所有测试方法与之前的研究相同，使用磷酸预蚀刻与PLP粘合剂（PLP-10）和传统的釉质粘合剂（EB）对复合材料与牛釉质的粘合进行SBS测量。使用相同的试验夹具进行疲劳试验，在4个选定的峰值载荷值（分别为粘合强度的35 - 60%）下，以2 Hz的频率进行载荷循环，最多10（5）次循环。根据获得的数据确定疲劳极限。对每种粘合剂进行牙釉质表面树脂渗透的SEM分析。发现EB的SBS和SFL（SBS：30.4MPa; SFL：15.6MPa）显著大于PLP-10（SBS：20.2MPa; SFL：9.9MPa）。与先前发现的结果相比，釉质预酸蚀对SBS没有显著改善，对SFL只有轻微改善。对于PLP-10，牙釉质表面的树脂标记渗透与先前单独使用PLP所发现的相似，这表明由磷酸产生的孔隙被酸性PLP粘合剂有效地去除。与文献中报道的一些自蚀刻粘合剂不同，预蚀刻牙釉质并没有改善Prompt-L-Pop粘合剂的性能。(c)2007年，牙科材料学院。由爱思唯尔有限公司出版。保留所有权利。
Objective. A previous study found that the shear bond strength (SBS) to bovine enamel for the self-etching adhesive Adper Prompt-L-Pop (PLP) was 75% of that found with the etch-and-rinse material SingleBond, while the comparative value for the shear fatigue limit (SFL) was only 58% at 10(5) load cycles. Resin penetration into the enamel surface was substantially less for PLP but it was not conclusive that this was the reason for the lower results cited above. The objective of this study was to determine if pre-etching enamel would substantially improve the SBS and SFL of the PLP adhesive over those found in the previous study.Materials and methods. All test methods were the same as for the previous study SBS measurements were conducted for composite bonds to bovine enamel using a phosphoric acid pre-etch with the PLP adhesive (PLP-10) and for a conventional enamel-bonding adhesive (EB). Fatigue testing was done with the same test fixtures, load cycling at 2 Hz up to a maximum of 10(5) cycles at four selected peak load values between 35 and 60% of the respective bond strengths. Fatigue limits were determined from the data obtained. SEM analysis of resin penetration of the enamel surface was carried out for each adhesive.Results. A significantly greater SBS and SFL were found for EB (SBS: 30.4 MPa; SFL: 15.6 MPa) than for PLP-10 (SBS: 20.2 MPa; SFL: 9.9 MPa). Compared with previously found results, the pre-etching of enamel had no significant improvement in SBS and only slight improvement in SFL. Resin tag penetration of the enamel surface for PLP-10 was similar to that previously found for PLP alone, suggesting that the porosity created by phosphoric acid was effectively removed by the acidic PLP adhesive.Significance. Unlike some self-etching adhesives reported in the literature, pre-etching enamel did not improve the performance of the Prompt-L-Pop adhesive. (c) 2007 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.