Esteves Stella Renata Machado Silva, Barcellos Daphne Camara, da Silva Tânia Mara, Silva Mateus Rodrigues, Campos Tiago Moreira Bastos, Rosetti Elizabeth Pimentel, Pucci César Rogério, Gonçalves Sérgio Eduardo de Paiva
Department of Restorative Dentistry, Institute of Science and Technology of São José dos Campos, Sao Paulo State University (Unesp), São Paulo, Brazil.
Department of Prosthodontics, Federal University of Espírito Santo, Vitória, ES, Brazil.
Int J Dent. 2022 Feb 27;2022:5771341. doi: 10.1155/2022/5771341. eCollection 2022.
To evaluate the physicochemical (sorption (SOR), solubility (SOL), and degree of conversion (DC)) and mechanical (flexural strength (FS), modulus of elasticity (ME), and compressive strength (CS)) properties of adhesives with different water contents (DO).
An adhesive was formulated: 55 wt% BisGMA, 45 wt% HEMA, 0.5 wt% camphorquinone, 0.5 wt% EDMAB, and 1.0 wt% DPIHP. DO was added into the adhesives (0 wt%, 10 wt%, and 16 wt%). DC was monitored through the FTIR. FS, ME, CS, SOR, and SOL were tested. The adhesive samples were aged in deionized water, ethanol, and acetone. Data were submitted to ANOVA and Tukey's tests (5%).
For DC, the 0 wt% group showed a significant reduction (68.09 ± 0.14) compared with the 10 wt% (87.07 ± 0.81) and 16 wt% groups (89.87 ± 0.24); 10 wt% showed the highest FS (MPa) mean values (141.6 ± 6.71) compared with the 0 wt% (109.4 ± 20.5) and 16 wt% (107.8 ± 15.8). For the CS (MPa) and ME (GPa), the 16 wt% showed the lowest mean values (98.8 ± 18.0 and 2.2 ± 0.3, respectively) compared with the 10 wt% and 0 wt%. For the SOR, 16 wt% of water showed the highest mean values and the ethanol showed the lowest mean values of SOL regardless of water content.
The amount of water content and the types of aging solvents significantly affect the adhesive properties.
评估不同含水量（DO）的粘合剂的物理化学性质（吸附（SOR）、溶解度（SOL）和转化率（DC））以及机械性能（弯曲强度（FS）、弹性模量（ME）和抗压强度（CS））。
配制一种粘合剂：55 wt%双酚A缩水甘油醚（BisGMA）、45 wt%甲基丙烯酸羟乙酯（HEMA）、0.5 wt%樟脑醌、0.5 wt%乙二甲基对甲苯磺酰胺（EDMAB）和1.0 wt%二苯基异氰尿酸酯（DPIHP）。将DO添加到粘合剂中（0 wt%、10 wt%和16 wt%）。通过傅里叶变换红外光谱（FTIR）监测DC。测试FS、ME、CS、SOR和SOL。将粘合剂样品在去离子水、乙醇和丙酮中老化。数据进行方差分析（ANOVA）和Tukey检验（5%）。
对于DC，0 wt%组与10 wt%（87.07±0.81）和16 wt%组（89.87±0.24）相比有显著降低（68.09±0.14）；与0 wt%（109.4±20.5）和16 wt%（107.8±15.8）相比，10 wt%的FS（MPa）平均值最高（141.6±6.71）。对于CS（MPa）和ME（GPa），与10 wt%和0 wt%相比，16 wt%的平均值最低（分别为98.8±18.0和2.2±0.3）。对于SOR，无论含水量如何，16 wt%的水的平均值最高，乙醇的SOL平均值最低。
含水量和老化溶剂类型显著影响粘合剂性能。
