Memarpour Mahtab, Shafiei Fereshteh, Rafiee Azade, Khosronia Mahsa, Alizadeh Marzieh, Vossoughi Mehrdad
Oral and Dental Disease Research Center, Department of Pediatric Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Dent Res J (Isfahan). 2024 Jul 12;21:42. eCollection 2024.
The main disadvantage of silver diamine fluoride (SDF) is its persistent dark coloring. The aim of this study was to cover this discoloration on affected primary tooth dentin with different materials and subsequently measure their shear bond strength (SBS).
In this study total of 60 primary teeth were demineralized and randomly divided into five groups ( = 12). The tooth surfaces were treated with 38% SDF, and restorative cylinders were built on the dentin as follows: (1) phosphoric acid etching + GLUMA Universal Adhesive (GUA; etch-and-rinse mode) + composite resin (CR); (2) GUA (self-etch mode) + CR; (3) resin-modified glass ionomer (RMGI; Fuji II); (4) Surefil One (self-adhesive CR); and (5) TheraCem (self-adhesive resin cement) + CR. After restoration, the specimens were tested for SBS. Failure mode was determined by digital analysis and scanning electron microscopy. Data were analyzed by one-way analysis of variance and Tukey's honest significant difference test. <0.05 indicated statistical significance.
Group 1 had significantly higher mean SBS ( < 0.05) compared to Groups 2-5, while Group 5 had the least SBS ( < 0.001). Mean SBS differences between Groups 2 and 3 were not significant ( = 0.328). Group 4 had lower mean SBS than Groups 1 ( < 0.001) and 2 ( = 0.17). Most groups showed adhesive failure.
CR associated with the universal adhesive in etch-and-rinse mode had much higher SBS than the other groups; therefore, we recommend it to cover the dark discoloration generated by SDF.
氟化亚锡（SDF）的主要缺点是其会产生持久的深色。本研究的目的是用不同材料覆盖患龋乳牙牙本质上的这种变色，随后测量它们的剪切粘结强度（SBS）。
在本研究中，总共60颗乳牙脱矿并随机分为五组（每组n = 12）。牙齿表面用38%的SDF处理，然后在牙本质上构建修复体圆柱体，如下：（1）磷酸酸蚀+GLUMA通用粘结剂（GUA；酸蚀冲洗模式）+复合树脂（CR）；（2）GUA（自酸蚀模式）+CR；（3）树脂改性玻璃离子水门汀（RMGI；富士II型）；（4）Surefil One（自粘结复合树脂）；（5）TheraCem（自粘结树脂水门汀）+CR。修复后，对标本进行SBS测试。通过数字分析和扫描电子显微镜确定失败模式。数据采用单因素方差分析和Tukey诚实显著性差异检验进行分析。P < 0.05表示具有统计学意义。
与第2 - 5组相比，第1组的平均SBS显著更高（P < 0.05），而第5组的SBS最低（P < 0.001）。第2组和第3组之间的平均SBS差异不显著（P = 0.328）。第4组的平均SBS低于第1组（P < 0.001）和第2组（P = 0.17）。大多数组表现为粘结失败。
在酸蚀冲洗模式下与通用粘结剂联合使用的复合树脂的SBS远高于其他组；因此，我们推荐使用它来覆盖SDF产生的深色变色。
