Department of Operative Dentistry, School of Dentistry, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
Department of Operative Dentistry, School of Dentistry, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
Dent Mater. 2019 Sep;35(9):e193-e203. doi: 10.1016/j.dental.2019.05.009. Epub 2019 May 24.
The aim of this in vitro study was to evaluate the effect of air-abrasion surface pre-treatment with bioactive glass (BAG) 45S5 on enamel surface loss after erosion/abrasion challenge.
Twenty-four sound bovine incisors were used for this study. Four experimental groups (n=12) were assigned as follows: Group 1 was the negative control group, Group 2 specimens were treated with a SnF gel (positive control group), Group 3 specimens were air-abraded with BAG 45S5 (ProSylc) and Group 4 received both treatments. The specimens were submitted to erosion/abrasion challenge using a common soft drink. Enamel surface loss was evaluated using an optical profilometer. Additionally, surface roughness (VSI method) and surface microhardness (Vickers method) changes were evaluated, as well as SEM and EDS analyses were performed on enamel surface. The data were statistically analyzed using one-way ANOVA and Tukey's post-hoc test at a level of significance a=0.05.
Surface pre-treatment with BAG 45S5 reduced surface loss in comparison with negative control group (p<0.001), which exhibited the highest surface loss of the experimental groups (p<0.05). The positive control group (SnF treatment) and Group 4 specimens, which received both air-abrasion pre-treatment and SnF treatment, presented the lowest surface loss (p<0.05), but did not show significant differences to each other (p=0.65).
Air-abrasion pre-treatment with BAG 45S5 may be beneficial as an in-office preventive method for the limitation of enamel erosive wear induced by excessive consumption of soft drinks. The clinical significance of the results regarding this preventive method should be confirmed by clinical studies.
本体外研究旨在评估生物活性玻璃（BAG）45S5 空气喷砂表面预处理对侵蚀/磨损挑战后牙釉质表面损耗的影响。
本研究使用了 24 颗健康的牛门牙。将四个实验组（n=12）分配如下：第 1 组为阴性对照组，第 2 组标本用 SnF 凝胶处理（阳性对照组），第 3 组标本用 BAG 45S5（ProSylc）喷砂处理，第 4 组同时接受两种处理。使用普通软饮料对标本进行侵蚀/磨损挑战。使用光学轮廓仪评估牙釉质表面损耗。此外，评估表面粗糙度（VSI 法）和表面显微硬度（维氏法）的变化，并对牙釉质表面进行 SEM 和 EDS 分析。使用单因素方差分析和 Tukey 事后检验对数据进行统计学分析，显著性水平为 a=0.05。
与阴性对照组相比，BAG 45S5 表面预处理降低了表面损耗（p<0.001），而阴性对照组表现出实验各组中最高的表面损耗（p<0.05）。阳性对照组（SnF 处理）和第 4 组标本，同时接受空气喷砂预处理和 SnF 处理，表现出最低的表面损耗（p<0.05），但彼此之间没有显著差异（p=0.65）。
BAG 45S5 空气喷砂预处理可能是一种有益的诊室预防方法，可限制因过量饮用软饮料而导致的牙釉质侵蚀磨损。关于这种预防方法的临床意义应通过临床研究加以证实。
