生物活性羟基磷灰石纳米棒掺入自蚀刻胶粘剂对树脂/牙本质界面微渗漏、纳米渗漏模式及元素分析的影响

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摘要

目的:比较4种胶粘剂在人工唾液中存放6个月后,热循环(2000循环)对胶粘剂微渗漏模式、纳米渗漏模式及界面元素分析的影响。材料与方法:选取120颗拔除的健全人恒磨牙。并根据胶粘剂类型分为4组(一步自蚀刻(1S-SE)胶粘剂、羟基磷灰石纳米棒改性自蚀刻胶粘剂(HA-NR)、通用胶粘剂、树脂改性玻璃离子基胶粘剂)。每组根据检测时间进一步分为两个亚组,(a)立即评估,(b)在人工唾液中保存6个月,然后进行热循环。每组牙按试验类型分为三组:(I)微渗漏(ML)试验(n =80), (II)纳米渗漏(NL)试验(n =24), (III)元素分析试验(n = 16)。对于(ML)检验,将收集到的所有数据制成表格,并使用IBM SPSS统计软件包进行统计分析。采用卡方检验比较不同粘接剂组的微渗漏评分。结果:“黏附材料类型”和“时间”对微渗漏有显著影响(P≤0.05)。另一个卡方检验显示,各组间牙合和龈缘的微漏无显著差异。改性自蚀刻胶组钙、磷酸盐水平升高。结论:生物活性羟基磷灰石纳米棒(HA-NR)掺入自蚀刻胶粘剂可减少树脂/牙本质界面的微渗漏和纳米渗漏模式。它可以提高树脂-牙本质界面的钙和磷酸盐水平。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Incorporation of Bioactive Hydroxyapatite Nano-rods in Self-Etch Adhesive on Microleakage, Nanoleakage Pattern and Elemental analysis of Resin/Dentin Interface
: Objective: To compare the effect of four types of adhesives immediately and after 6 months storage in artificial saliva followed by thermocycling (2000 cycle) on microleakage patterns, the nanoleakage pattern, and elemental analysis of adhesive interface. Materials and Methods: A total of 120 extracted sound human permanent molars were selected. And assigned into 4 groups according to adhesive types (one step-self-etch (1S-SE) adhesive, modified self-etch adhesive with hydroxyapatite nanorods (HA-NR), universal adhesive, resin-modified glass ionomer-based adhesive). Each group was further subdivided into two subgroups according to time of testing, (a) immediately evaluated, (b) was subjected to the 6 months storage in artificial saliva followed by thermocycling. For each adhesive group, teeth divided into three groups according to test types: (I) for microleakage (ML) test (n =80), (II) for nanoleakage (NL) test (n =24), and (III) for elemental analysis test (n = 16). For the (ML) test, all collected data were tabulated and statistically analyzed using a statistical package with IBM SPSS. A Chi-squared test was used to compare microleakage scores among different adhesive groups. Results: The microleakage was significantly affected by the “type of adhesive material” (P ≤ 0.05) and the “time”. Another Chi-squared test showed that there was no significant difference in microleakage between occlusal and gingival margins among tested groups. Calcium and phosphate levels increased in, the modified self-etch adhesive group. Conclusion: Incorporation of bioactive hydroxyapatite nano-rods (HA-NR) into self-etch adhesives decreases microleakage and nanoleakage pattern of resin/dentin interface. It improves Calcium and Phosphate levels at the resin- dentin interface.
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