背景:乳牙中的龋齿由于其薄的结构而迅速发展,因此需要恢复。然而,修复体通常由于各种原因而失败,例如继发性龋齿和降低的微拉伸粘结强度(μTBS),这要求使用抗微生物剂,例如二氟化银(SDF)。
目的:本研究旨在测量和分析SDF应用对三种常用修复材料对乳牙牙本质的μTBS的影响,并比较SEM下的粘结破坏界面类型。
方法:该研究包括60个样本,在三个修复材料中平均分为六组,即,玻璃离聚物水泥(GIC,第一组和第二组),树脂改性玻璃离聚物水泥(RMGIC,第三和第四组),和具有A和B细分的复合树脂(V和VI组),其中A表示具有SDF应用的样本,B表示没有SDF应用的样本。
结果:观察到,无论使用SDF,RMGIC对声音和龋齿牙本质的μTBS均具有统计学意义(P<0.05),当GIC,RMGIC,与SDF应用无关,将复合树脂与声音和龋齿牙本质进行了比较,有统计学意义(P<0.05)。SEM分析显示,所有组之间主要是内聚失败。
结论:根据结果,结论是SDF对GIC的μTBS没有不利影响,RMGIC,和复合树脂对乳牙的龋齿和声音牙本质都有影响。
BACKGROUND: Caries in primary teeth rapidly advances owing to its thin structure, thereby requiring restoration. However, restorations often fail due to various causes such as secondary caries and reduced microtensile bond strength (μTBS), which calls for the use of antimicrobial agents such as silver diamine fluoride (SDF).
OBJECTIVE: This
study aims to measure and analyse the effect of SDF application on the μTBS of three regularly used restorative materials to
dentin of primary teeth as well as compare the types of bond failure interfaces under SEM.
METHODS: The
study comprised 60 samples equally divided into six groups among three restorative materials, namely, glass ionomer cement (GIC, Groups I and II), resin-modified glass ionomer cement (RMGIC, Groups III and IV), and composite resin (Groups V and VI) with subdivisions of A and B, where A represented samples with SDF application and B represented samples without SDF application.
RESULTS: It was observed that μTBS of RMGIC to sound and carious
dentin irrespective of SDF application was found to be statistically significant (P < 0.05), and when GIC, RMGIC, and composite resins were compared to both sound and carious dentin irrespective of SDF application, it was statistically significant (P < 0.05). SEM analysis revealed predominantly cohesive failures among all the groups.
CONCLUSIONS: Based on the results, it was concluded that SDF has no adverse effect on the μTBS of GIC, RMGIC, and composite resin to both carious and sound
dentin of primary teeth.