Bhardwaj Surabhi, Kaur Harsimran, Choudhary Rishika, Garg Nishita, Yeluri Ramakrishna, Yeluri Garima
Department of Pedodontics and Preventive Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India.
Department of Pedodontics and Preventive Dentistry, Dental Institute, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India.
Indian J Dent Res. 2025 Jul 13. doi: 10.4103/ijdr.ijdr_515_23.
To evaluate the effect of the application of silver diamine fluoride-potassium iodide on the microhardness and shear bond strength of composite resin complex to enamel and dentin.
Extracted premolars were processed and sectioned to expose flat enamel and dentin surfaces. Group 1 was the Enamel group and Group 2 was the Dentin group which were further categorized into sound and demineralized subgroups, with and without SDF+KI application. The samples were then mounted in self-curing acrylic resin and composite buttons were built over the flat surfaces of each subgroup. Half of the total samples were subjected to shear bond strength using a Universal testing machine and another half was subjected to microhardness testing using Vickers microhardness testing machine. Inter-subgroup comparison among enamel and dentin samples for microhardness and shear bond strength was carried out using one-way ANOVA and post hoc Tukey's analysis. The level of significance was predetermined at ≤0.05.
The groups with SDF+KI application showed an increase in the shear bond strength while improved microhardness of the enamel and dentin samples was observed. There was a statistically significant difference between the shear bond strength values and microhardness among the subgroups of enamel and dentin (P < 0.05).
The application of SDF+KI improved the shear bond strength of the resin composite and enhanced the microhardness of the enamel and dentin.
评估氟化银-碘化钾的应用对复合树脂复合体与釉质和牙本质之间的微硬度及剪切粘结强度的影响。
对拔除的前磨牙进行处理并切片，以暴露出平坦的釉质和牙本质表面。第1组为釉质组，第2组为牙本质组，每组再进一步分为健康和脱矿的亚组，分别应用和不应用氟化银-碘化钾。然后将样本安装在自凝丙烯酸树脂中，并在每个亚组的平坦表面上制作复合树脂纽扣。总样本的一半使用万能试验机进行剪切粘结强度测试，另一半使用维氏显微硬度计进行微硬度测试。使用单因素方差分析和事后Tukey分析对釉质和牙本质样本的微硬度和剪切粘结强度进行亚组间比较。显著性水平预先设定为≤0.05。
应用氟化银-碘化钾的组显示剪切粘结强度增加，同时观察到釉质和牙本质样本的微硬度有所提高。釉质和牙本质亚组之间的剪切粘结强度值和微硬度存在统计学显著差异（P < 0.05）。
氟化银-碘化钾的应用提高了树脂复合体的剪切粘结强度，并增强了釉质和牙本质的微硬度。
