Micro-computed tomography assesment of structural microporosity and marginal gaps in different flowable composites placed with different instruments

Objectives: The aim of this study was to evaluate the structural microporosity (MP) and marginal gap (MG) different flowable composite resins placed with instruments using micro-computed tomography (μCT). 
 Materials Methods: Standard Class II MOD cavities were prepared on 108 lower third molar teeth. Three resins; Filtek Bulk-fill, SDR Bulk-fill I-Flow conventional resin applied a sharp explorer, microbrush or an injector. After they covered paste-like nanohybrid resin, μCT images examined in terms MP MG. Statistical analysis data performed two-way ANOVA Tukey’s post hoc tests. Results: observed less explorer group than injector groups (p < 0.05). There no significant difference between > i-FLOW showed highest rate compared other two In MG, presented higher MG values materials 0.05), while similar results Conclusions: Additional occluso-gingivally vibration may be useful placement. are better