question: Compared to SonicFill what was the result of 3M bulk fill on Microleakage of Two Bulk Fill and One Conventional Composite in Class II Restorations of Primary Posterior Teeth?
context: The three groups were not significantly different in terms of occlusal or gingival microleakage (P>0.05), but gingival margins showed significantly higher microleakage than occlusal margins in all three groups (P<0.05).