The characterization of dentin defects produced by air polishing
The characterization of dentin defects produced by air polishing
复制标题
空气抛光产生的牙本质缺陷的表征
DOI：
10.1007/s10266-011-0019-0
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发表时间：
2011
期刊：
影响因子：
2.5
通讯作者：
Soh Sato
中科院分区：
文献类型：
--
作者：
K. Tada;Suphasiriroj Wiroj;M. Inatomi;Soh Sato
本研究的目的是表征三种类型的抛光粉和五种不同喷嘴距离的空气抛光后牙本质表面的缺陷。将人类牙齿嵌入丙烯酸树脂中，然后抛光直至暴露出牙本质表面。抛光机的喷嘴固定在相对于牙本质表面的指定距离（2、3、4、5 或 6 毫米）和方向（45°）处。这三种粉末分别是 CLASSIC（NaHCO3，直径 65 μm）、PERIO（甘氨酸，直径 25 μm）和 SOFT（甘氨酸，直径 65 μm）。就喷嘴距离而言，我们发现平均缺陷深度仅在 6 毫米处存在显着差异。 6 毫米的喷涂距离产生最浅的缺陷深度。该变量对缺陷体积没有影响。软粉末的缺陷深度和体积明显小于其他两种粉末。与未抛光的牙本质表面（对照）相比，在所有抛光测试中，牙本质的接触角均显着增加。我们发现，与所有使用的粉末系统中的任何其他距离相比，距抛光机喷嘴 6 毫米的喷射距离并以 45° 角定向产生的牙本质表面缺陷更少。在这个距离上，软粉末产生的深度和体积缺陷统计上显着小于其他两组粉末。
The objective of this study is to characterize the defects in the dentin surface after air polishing for three types of polishing powders and five different nozzle distances. Human teeth were embedded in acrylic resin and then polished until the dentin surface became exposed. The nozzle of the polisher was fixed at a specified distance (2, 3, 4, 5, or 6 mm) and orientation (45°) with respect to the dentin surface. The three powders were CLASSIC (NaHCO3, 65 μm diameter), PERIO (glycine, 25 μm diameter), and SOFT (glycine, 65 μm diameter). With respect to nozzle distance, we find a significant difference in the mean defect depth only at 6 mm. The spray distance of 6 mm produced the shallowest defect depths. This variable had no effect on the defect volume. SOFT powder had significantly less depths and volumes of defects than the other two powders. The contact angle of the dentin increased significantly in all polishing tests, compared to an unpolished dentin surface (control). We find that spray distance of 6 mm from the nozzle of the polisher and orienting on 45° angle produced less dentin surface defects than any other distance in all powder systems used. At this distance, SOFT powder produced statistically significant smaller depth and volume defects than the other two powder groups.