Apparent conversion of adhesive resin in the hybrid layer, Part II: In situ studies of the resin-dentin bond.
Apparent conversion of adhesive resin in the hybrid layer, Part II: In situ studies of the resin-dentin bond.
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混合层中粘合树脂的表观转化，第二部分：树脂-牙本质粘合的原位研究。
DOI：
10.1002/jbm.a.31954
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Armstrong,StevenR
中科院分区：
文献类型：
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作者：
Zou,Yuan;Jessop,JulieLP;Armstrong,StevenR
粘接剂对混合层的渗透和转化对粘接树脂(AR)-牙本质粘结的质量和寿命至关重要。在这项研究中，发展了一种方法学，以检查转化率和相对HEMA浓度相对于BIS-GMA的拉曼光谱。这一方法将在今后有关该专题的报告中使用。保水型树脂-牙本质样品的AR转换率(84%±3%)与商用粘结剂(COMM-ADH)树脂样品在水储存24小时后的AR值(80%±2%)基本一致，显著高于非保水型ADH(58%±3%)(P=0.0005)。HL中部的粘附率差异无统计学意义(p=0.5036)，平均为83%±6%。HL上半部的HEMA摩尔分数(0.0028.67±0.0 3)显著高于AR的HEMA(0.6 0±0.0 1)。经GC/MS鉴定，HEMA和EDMAB为24 h水溶液中的可浸出组分。这种洗脱的效果解释了在干燥和储水条件下观察到的转化率测量的变化，这更恰当地被描述为“表观”转化率。#2008 Wiley期刊，Inc.生物材料研究杂志，2009
Penetration and conversion of adhesives into the hybrid layer (HL) is important to the quality and longevity of the adhesive resin (AR)‐dentin bond. In this study, a methodology is developed to examine the degree of conversion and relative HEMA concentration with respect to Bis‐GMA using Raman spectroscopy. This methodology will be used in the future reports related to this topic. Conversion in the AR of water‐stored resin‐dentin samples (84% ± 3%) agreed well with that measured in commercial adhesive (Comm Adh) resin samples after 24‐h water storage (80% ± 2% from Part 1) and was significantly higher than Comm Adh without water storage (58% ± 3% from Part 1) (p= 0.0005). Adhesive conversion was not significantly different (p= 0.5036) through the middle of the HL, with a mean of 83% ± 6%. HEMA mole fraction, relative to Bis‐GMA, was significantly higher (p= 0.0028) in the top half of the HL (0.67 ± 0.03), when compared to HEMA in the AR (0.60 ± 0.01). HEMA and EDMAB were identified through GC/MS as leachable components in the aqueous 24‐h storage media. The effect of this elution explains the change in conversion measurements observed between dry and water‐stored conditions, which is more appropriately described as the “apparent” conversion. © 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2009