Lechte Clemens, Hohmann Erik, Wiegand Annette, Kanzow Philipp
Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, 37075 Göttingen, Germany.
Department of Restorative Dentistry, Periodontology and Endodontology, University Medicine Greifswald, 17475 Greifswald, Germany.
Materials (Basel). 2025 Jan 12;18(2):313. doi: 10.3390/ma18020313.
To investigate the effect of different sandblasting settings on the shear bond strength (SBS) in the repair of resin composite, specimens (resin composite, enamel, and dentin; each group = 16) were sandblasted by varying the parameters of air pressure (0.2/0.3/0.4 MPa), angle (45/90°), particle size (27/50 μm), tip size (0.8/1.2 mm), and distance (2/5/10 mm) prior to the application of a universal adhesive (Adhese Universal) and resin composite (adhesive area: 7.07 mm). The specimens were subjected to artificial aging (10,000 cycles, 5-55 °C) prior to (resin composite only) and after repair. Groups without mechanical pretreatment and resin composite incremental bond strength served as controls. Statistical analysis was performed using ANOVAs, post hoc tests, and Chi-tests ( < 0.05). Only air pressure and distance impacted SBS ( ≤ 0.049). However, resin composite SBS did not differ from the resin composite incremental SBS within all sandblasting settings (positive control: 21.0 ± 5.0 MPa, ≥ 0.566). While sandblasting did not impact bond strength on enamel (control: 20.5 ± 5.1 MPa, ≥ 0.999), most settings resulted in a lower bond strength on dentin (control: 20.1 ± 4.7 MPa, ≤ 0.027). In conclusion, sandblasting significantly improves resin composite repair bond strength, while application parameters are of minor relevance.
为研究不同喷砂设置对树脂复合材料修复中剪切粘结强度（SBS）的影响，在应用通用粘结剂（Adhese Universal）和树脂复合材料（粘结面积：7.07平方毫米）之前，通过改变气压（0.2/0.3/0.4兆帕）、角度（45/90°）、颗粒尺寸（27/50微米）、喷嘴尺寸（0.8/1.2毫米）和距离（2/5/10毫米）等参数对样本（树脂复合材料、牙釉质和牙本质；每组16个）进行喷砂处理。在修复前（仅针对树脂复合材料）和修复后，对样本进行人工老化（10000次循环，5 - 55°C）。未进行机械预处理的组和树脂复合材料增量粘结强度作为对照。使用方差分析、事后检验和卡方检验进行统计分析（P < 0.05）。只有气压和距离对SBS有影响（P ≤ 0.049）。然而，在所有喷砂设置下，树脂复合材料的SBS与树脂复合材料增量SBS并无差异（阳性对照：21.0 ± 5.0兆帕，P ≥ 0.566）。虽然喷砂对牙釉质的粘结强度没有影响（对照：20.5 ± 5.1兆帕，P ≥ 0.999），但大多数设置导致牙本质的粘结强度较低（对照：20.1 ± 4.7兆帕，P ≤ 0.027）。总之，喷砂显著提高了树脂复合材料修复的粘结强度，而应用参数的相关性较小。
