Suwannachot Laksika, Thamrongananskul Niyom, Yamockul Suparaksa, Surintanasarn Atikom
Esthetic Restorative and Implant Dentistry Program, Faculty of Dentistry, Chulalongkorn University, Pathum Wan, Bangkok, Thailand.
Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Pathum Wan, Bangkok, Thailand.
Eur J Dent. 2025 Aug 22. doi: 10.1055/s-0045-1811225.
This study aimed to evaluate the shear bond strength (SBS) of zirconia to dual-cured resin cement following various cleaning protocols and surface treatments after cement contamination.Seventy-seven zirconia specimens (5 × 5 × 2.5 mm) were fabricated, polished, and randomly divided into seven groups ( = 11). Ten specimens per group were tested for SBS, and one was reserved for scanning electron microscopy. Group C- was cemented without surface treatment, while group C+ received air abrasion prior to cementation. Groups F - , F + , FT + , S - , and S+ were initially air-abraded and then contaminated with resin cement. F-series groups were cleaned using a furnace, and S-series with a piezoelectric scaler. Among these, F + , FT + , and S+ received additional air abrasion prior to re-cementation, whereas F- and S- did not. Groups F+ and S+ were re-cemented immediately, whereas FT+ was re-cemented 7 days after surface re-treatment. All specimens were artificially aged before SBS testing.One-way ANOVA followed by Tukey's HSD post-hoc test was used for statistical analysis (α = 0.05).Statistically significant differences in SBS were found among the groups ( < 0.05). Group F+ demonstrated the highest bond strength (6.60 ± 1.10 MPa), followed by groups C+ (6.59 ± 0.94 MPa) and S+ (5.42 ± 0.87 MPa), with no significant differences among these three. The lowest SBS was observed in group C- (2.66 ± 0.51 MPa). Intermediate values were recorded in groups F- (4.17 ± 0.95 MPa), FT+ (4.41 ± 0.95 MPa), and S- (4.60 ± 1.17 MPa), which did not differ significantly from each other.Cleaning cement-contaminated zirconia using a furnace or piezoelectric scaler, followed by air abrasion and immediate re-cementation, significantly improves SBS to levels comparable with clean, air-abraded zirconia. Air abrasion enhances bonding efficacy, while delayed re-cementation may diminish bond strength even after surface re-treatment.
本研究旨在评估在不同清洁方案及水泥污染后的表面处理后，氧化锆与双固化树脂水门汀之间的剪切粘结强度（SBS）。制作了77个氧化锆试样（5×5×2.5毫米），进行抛光，并随机分为七组（每组n = 11）。每组十个试样用于测试SBS，一个留作扫描电子显微镜观察。C-组在未进行表面处理的情况下进行粘结，而C+组在粘结前进行了空气喷砂处理。F -、F +、FT +、S -和S+组最初进行空气喷砂处理，然后被树脂水门汀污染。F系列组使用熔炉清洁，S系列组使用压电洁牙器清洁。其中，F +、FT +和S+组在重新粘结前进行了额外的空气喷砂处理，而F -和S -组没有。F +和S+组立即重新粘结，而FT +组在表面再处理7天后重新粘结。所有试样在进行SBS测试前进行人工老化。采用单因素方差分析，随后进行Tukey's HSD事后检验进行统计分析（α = 0.05）。各实验组间SBS差异有统计学意义（P < 0.05）。F +组的粘结强度最高（6.60±1.10兆帕），其次是C+组（6.59±0.94兆帕）和S+组（5.42±0.87兆帕），这三组之间无显著差异。C-组的SBS最低（2.66±0.51兆帕）。F -组（4.17±0.95兆帕）、FT +组（4.41±0.95兆帕）和S -组（4.60±1.17兆帕）的粘结强度为中间值，彼此之间无显著差异。使用熔炉或压电洁牙器清洁被水泥污染的氧化锆，随后进行空气喷砂处理并立即重新粘结，可显著提高SBS至与清洁、经过空气喷砂处理的氧化锆相当的水平。空气喷砂处理可增强粘结效果，而即使经过表面再处理，延迟重新粘结也可能降低粘结强度。
