Effect of 38% silver diamine fluoride on fracture resistance of leucite reinforced feldspathic ceramic CAD/CAM class I inlay restorations

Introduction: Silver diamine fluoride (SDF) is a topical agent that has recently gained popularity for its ability to stop and prevent dental caries. Aim: The aim of this study was to evaluate the effect of SDF applied to class I cavities of extracted non-caries molar teeth on the fracture resistance of CAD/CAM block. Materials and methods: Twenty eight extracted noncarious molars were selected for the study. They were divided into two groups (n=14 per group). In each tooth, a diamond head was used to create Class I cavities that were 2 mm deep and 2 mm wide. The fracture strength test was carried out by applying a force at a speed of 5 mm/min, while continuously increasing the long axis of the tooth at the point corresponding to the central fossa. Results: SDF application did not have a statistically significant effect on fracture resistance in teeth restored with Class I cavities CAD/CAM blocks. The two groups did not differ statistically significantly according to the two-way ANOVA [mean fracture force (N) ± standard deviation: without SDF 1138.19±581.65 and with SDF 1067.93±555.65; p=0.712]. Conclusions: This study showed that SDF did not have either a positive or negative effect on the fracture resistance for restoration or easy application in cavities. Long-term clinical studies with different mechanical tests are needed for the safe use of SDF in pre-restoration cavities with CAD/CAM blocks