Dr. Abdullah is a graduate student, Department of Oral Health Policy and Epidemiology, Harvard School of Dental Medicine, Boston, Mass., USA, and an assistant professor, Department of Preventive Dental Sciences, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia;, Email:
Dr. Finkelman is an associate professor and director, Division of Biostatistics and Experimental Design, Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, Mass., USA.
J Dent Child (Chic). 2022 May 15;89(2):68-74.
To investigate shear bond strength (SBS) of three restorative materials on primary dentin after silver diamine fluoride (SDF) application.
Thirty primary teeth were randomized into three groups of 10 teeth. Each tooth was split mesiodistally and randomized into experimental (artificial caries plus SDF) and control (sound dentine without SDF) groups. Glass ionomer cement (GIC), resin-modified bioactive resin (ACTIVA), and composite resin (CR) restorations were tested for SBS and mode of failure (MF).
All SDF groups exhibited significantly lower SBS compared to the control (CR: =0.001; ACTIVA: =0.001; GIC: =0.004). For the SDF group, the compa- rison of materials was statistically significant ( =0.006); posthoc tests showed significance only between CR and ACTIVA ( =0.009) and between ACTIVA and GIC ( =0.020). The lowest mean value was obtained for ACTIVA (1.4 MPa) and the highest mean value was obtained for CR (3.3 MPa). For the control group, Welch's F test was statistically significant ( =0.044), but all posthoc tests were not. For MF, SDF exhibited a significantly greater percentage of adhesive failures with ACTIVA and CR than with GIC. In the control group, a mixed MF was more dominant with no significant differences.
The SDF group had significantly lower SBS.
研究三种修复材料在应用银氟化物（SDF）后对乳牙本质的抗剪粘结强度（SBS）。
30 颗乳牙随机分为三组，每组 10 颗。每颗牙齿被分为近中-远中向，并随机分为实验组（人工龋加 SDF）和对照组（无 SDF 的健康牙本质）。玻璃离子水门汀（GIC）、树脂改性生物活性树脂（ACTIVA）和复合树脂（CR）修复体用于测试 SBS 和失效模式（MF）。
所有 SDF 组的 SBS 均明显低于对照组（CR： =0.001；ACTIVA： =0.001；GIC： =0.004）。对于 SDF 组，材料比较具有统计学意义（ =0.006）；事后检验仅显示 CR 与 ACTIVA（ =0.009）和 ACTIVA 与 GIC（ =0.020）之间有显著性差异。ACTIVA 的平均 SBS 值最低（1.4 MPa），CR 的平均 SBS 值最高（3.3 MPa）。对于对照组，Welch F 检验具有统计学意义（ =0.044），但所有事后检验均无统计学意义。对于 MF，SDF 显示与 GIC 相比，ACTIVA 和 CR 的黏附性失效百分比显著更高。在对照组中，混合 MF 更为常见，无显著差异。
SDF 组的 SBS 明显降低。
