Randomized prospective clinical trial of class II restorations using flowable bulk-fill resin composites: 4-year follow-up.
Isis Almela Endo HoshinoAndre Luiz Fraga BrisoLara Maria Bueno EstevesPaulo Henrique Dos SantosSandra Meira Borghi FrascinoTiciane Cestari FagundesPublished in: Clinical oral investigations (2022)
Initial marginal discoloration was observed in more than 50% of class II restorations performed with restorative systems that used flowable bulk-fill resin composite. All restorative systems had decreased proximal contact strength over time.