Krajangta Nantawan, Ninbanjong Supissara, Khosook Sunisa, Chaitontuak Kanjana, Klaisiri Awiruth
Department of Operative Dentistry, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand.
Thammasat University Research Unit in Restorative and Esthetic Dentistry, Thammasat University, Pathumthani, Thailand.
Eur J Dent. 2022 Oct;16(4):828-832. doi: 10.1055/s-0041-1740221. Epub 2022 Feb 18.
This study evaluated the surface microhardness of composite, affected by surface coating with different dental adhesive systems.
A total of 100 composite discs were divided into five groups. Group 1 was uncoated (control group C), and groups 2 to 5 were coated with different adhesive systems (OptiBond FL: FL, OptiBond SOLO Plus: SOLO, OptiBond XTR: XTR, and OptiBond All in one: AIO, respectively). The Vickers microhardness (VHN) was measured without and with 500 thermocycles.
The data were analyzed using two-way ANOVA and Tukey's posthoc test at the 95% confidence level.
At 24 hours, the VHN of C (59.96 ± 3.68) and FL (59.83 ± 4.54) were significantly higher than SOLO (51.73 ± 4.63) and AIO (51.45 ± 4.11). The VHN of XTR (54.96 ± 3.68) was not significant compared with that of C and all other groups. After thermocycling, VHN were significantly decreased in all groups. However, there were no significant differences among all groups.
At 24 hours, composite coated with different adhesive systems have different effects to VHN. Thermocycling all adhesive resin systems coated on composite surface significantly decreased the VHN.
本研究评估了不同牙科粘结系统表面涂层对复合材料表面显微硬度的影响。
总共100个复合树脂圆盘被分为五组。第1组未涂层（对照组C），第2至5组分别用不同的粘结系统涂层（OptiBond FL：FL、OptiBond SOLO Plus：SOLO、OptiBond XTR：XTR和OptiBond All in one：AIO）。在未进行500次热循环和进行500次热循环后测量维氏显微硬度（VHN）。
使用双向方差分析和Tukey事后检验在95%置信水平下分析数据。
在24小时时，C组（59.96±3.68）和FL组（59.83±4.54）的VHN显著高于SOLO组（51.73±4.63）和AIO组（51.45±4.11）。XTR组（54.96±3.68）的VHN与C组及所有其他组相比无显著差异。热循环后，所有组的VHN均显著降低。然而，所有组之间无显著差异。
在24小时时，用不同粘结系统涂层的复合材料对VHN有不同影响。对复合材料表面涂覆的所有粘结树脂系统进行热循环显著降低了VHN。
