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首页> 外文期刊>Applied Surface Science >Adhesive interfaces of enamel and dentin prepared by air-abrasion at different distances
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Adhesive interfaces of enamel and dentin prepared by air-abrasion at different distances

机译：通过不同距离的空气磨蚀制备的牙釉质和牙本质的粘合界面

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摘要

The purpose of this study was to analyse, by scanning electron microscopy (SEM), the morphology of enamel and dentin/adhesive interfaces in cavities prepared by air-abrasion at different working distances. Thirty sound third human molars were selected and, on both their buccal and lingual surfaces, class V cavities were prepared by air-abrasion, at 2-, 4-, 6-, 8- and 10-mm working distances, or high-speed bur (control group). After preparation, all cavities were etched with 35% phosphoric acid gel and restored with Single Bond/Filtek Z-250. Buccal and lingual surfaces were separated and restorations sectioned in a buccolingual direction, providing two sections of each cavity, which were analysed by scanning electron microscopy. It was observed that the distances of 6 and 8 mm promoted more homogeneous dentin/adhesive interfaces, with tags formation, and more uniform for enamel, which were similar to the control group. It may be concluded that the air-abrasion working distance can influence the morphology of enamel and dentin/adhesive interfaces, and the intermediate distances provided better adhesive interfaces.
机译：这项研究的目的是通过扫描电子显微镜（SEM）分析牙釉质和牙本质/胶粘剂界面的形态，这些牙釉质是通过在不同的工作距离下通过空气磨蚀制备的。选择了三十个健全的第三类人类臼齿，在颊侧和舌侧两个表面上，通过气磨，工作距离为2、4、6、8、10毫米或高速制备了V类腔bur（对照组）。制备后，所有腔体均用35％磷酸凝胶蚀刻，并用Single Bond / Filtek Z-250修复。分离颊和舌表面，沿颊舌方向切开修复体，提供每个腔的两个部分，并通过扫描电子显微镜进行分析。观察到6mm和8mm的距离促进了更均匀的牙本质/粘合剂界面，形成标签，并且釉质更均匀，这与对照组相似。可以得出结论，空气磨蚀的工作距离会影响牙釉质和牙本质/粘合剂界面的形貌，而中间距离会提供更好的粘合剂界面。

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