Academisch Centrum Tandheelkunde Amsterdam (ACTA), Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, Netherlands.
Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), Turner Street, London, E1 2AD, UK.
Clin Oral Investig. 2022 Mar;26(3):3251-3259. doi: 10.1007/s00784-021-04307-7. Epub 2021 Nov 25.
To develop and test the cutting efficiency of a novel degradable glass as an alternative media to alumina powder for air abrasion.
A zinc-based glass (QMZK2) was designed, produced, and evaluated with a multi-modality imaging analysis. The glass dissolution study was carried out in three acids, using ICP-OES (inductively coupled plasma optical emission spectroscopy) at 5 different time points: 2.5, 5, 10, 60, and 240 min. The cutting efficiency of both materials was tested under the same parameters on slabs of elephant enamel. A stained fissure of a molar tooth was air abraded with the glass and evaluated with X-ray micro-tomography before and after air abrasion.
The particle size distribution of the glass was similar to that of alumina 53 µm but with a slightly greater dispersion of particle size. The shape of the particles was angular, appropriate for cutting purposes. The dissolution study showed that the glass dissolved rapidly in acidic conditions at all time points. Between the two variables, pressure and powder flow, pressure was found to influence the cutting speed to a greater extent than powder flow.
Alumina powder was found to perform significantly better in 4 of the 9 conditions tested on elephant enamel, QMZK2 in one, and no significant differences were found for the rest of the 4 conditions. The QMZK2 seems to offer promising results as an alternative material to alumina.
QMZK2 glass has the potential for replacing aluminum oxide as a degradable material in air abrasion technology.
开发和测试一种新型可降解玻璃的切割效率，作为替代氧化铝粉末的空气喷砂介质。
设计、制作了一种基于锌的玻璃（QMZK2），并采用多模态成像分析进行了评估。玻璃溶解研究在三种酸中进行，使用 ICP-OES（电感耦合等离子体光学发射光谱）在 5 个不同时间点：2.5、5、10、60 和 240 分钟进行。在相同的参数下，对大象牙釉质平板进行了两种材料的切割效率测试。用玻璃对一颗磨牙的染色裂隙进行空气喷砂，并在空气喷砂前后用 X 射线微断层扫描进行评估。
玻璃的粒径分布与氧化铝 53µm 相似，但粒径分布略有差异。颗粒形状为角状，适合切割目的。溶解研究表明，玻璃在所有时间点的酸性条件下都迅速溶解。在压力和粉末流量这两个变量中，压力对切割速度的影响比粉末流量更大。
在对大象牙釉质进行的 9 种条件测试中，有 4 种条件下氧化铝粉末的表现明显优于 QMZK2，有 1 种条件下 QMZK2 表现更好，其余 4 种条件下没有发现显著差异。QMZK2 似乎是一种有前途的替代氧化铝的材料。
QMZK2 玻璃有可能替代氧化铝作为空气喷砂技术中的可降解材料。
