Department of Prosthetic Dentistry, University Hospital, LMU Munich, Goethestraße 70, 80336, Munich, Germany.
Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestraße 70, 80336, Munich, Germany.
Clin Oral Investig. 2023 Jan;27(1):31-43. doi: 10.1007/s00784-022-04800-7. Epub 2022 Nov 28.
The influence of different cleaning methods, air-abrasion parameters, and aging on shear bond strength (SBS) and tensile bond strength (TBS) of 3D resin luted to composite resin.
Nine hundred resin substrates were 3D printed (D20II, Rapid Shape) and cleaned with either isopropanol (ISO), butyldiglycol-based solution (BUT), or centrifugation (CEN). After 24-h storage in 37 °C water, specimens were air-abraded (mean particle size 50 µm; n = 60) with either alumina at 0.1 MPa (AL0.1) or 0.4 MPa (AL0.4) and glass pearls at 0.1 MPa (GP0.1) and 0.4 MPa (GP0.4) or conditioned with visio.link (control) and luted with PanaviaV5. Initially (24 h, 37 °C water storage) or after aging (10,000 thermal cycles), SBS and TBS were measured, and fracture types were examined. Surface free energy (SFE) and roughness (Ra) were determined after air-abrasion. Kolmogorov-Smirnov, Kruskal-Wallis H, Mann-Whitney U, chi-square, and partial eta-squared were computed.
SBS measurements presented higher values than TBS (p < 0.001-0.033). Within the pretreatment groups, CEN showed the highest SBS and TBS values compared to cleaning with ISO or BUT (p < 0.001-0.040). Pretreatment with GP0.1 displayed the lowest bond strength values (p < 0.001-0.049), and mostly adhesive fractures occurred. The highest Ra values (p < 0.001) were observed for AL0.4 pretreatment.
Pretreatment with AL0.4 and the control group mainly presented the highest bond strength values. Thermocycling had a positive effect on the bond strength.
According to this study, 3D-printed restorations should be pretreated with AL0.4 or with visio.link before adhesive luting, regardless of their cleaning.
研究不同清洗方法、喷砂参数和老化对复合树脂黏结 3D 树脂的剪切黏结强度（SBS）和拉伸黏结强度（TBS）的影响。
将 900 个树脂基底通过 3D 打印（D20II，Rapid Shape）打印出来，并分别使用异丙醇（ISO）、丁二醇基溶液（BUT）或离心（CEN）进行清洗。在 37°C 水中储存 24 小时后，将样本用平均粒径为 50 µm 的氧化铝喷砂（AL0.1 为 0.1 MPa，AL0.4 为 0.4 MPa）或玻璃珠喷砂（GP0.1 为 0.1 MPa，GP0.4 为 0.4 MPa），或用 visio.link（对照）处理，然后用 PanaviaV5 黏结。初始时（24 小时，37°C 水储存）或老化后（10000 次热循环），测量 SBS 和 TBS，并检查断裂类型。喷砂后测定表面自由能（SFE）和粗糙度（Ra）。采用 Kolmogorov-Smirnov、Kruskal-Wallis H、Mann-Whitney U、卡方和偏 eta 平方进行计算。
SBS 测量值高于 TBS（p<0.001-0.033）。在预处理组中，与 ISO 或 BUT 清洁相比，CEN 显示出最高的 SBS 和 TBS 值（p<0.001-0.040）。GP0.1 预处理的黏结强度值最低（p<0.001-0.049），且主要发生黏附性断裂。AL0.4 预处理的 Ra 值最高（p<0.001）。
AL0.4 和对照组预处理后，黏结强度值最高。热循环对黏结强度有积极影响。
根据这项研究，无论采用何种清洗方法，3D 打印修复体在黏结前都应使用 AL0.4 或 visio.link 预处理。
