Effect of Immediate Dentin Sealing on the Bonding Performance of Indirect Restorations: a Systematic Review

Objectives: The popular immediate dentin sealing (IDS) technique is known to alleviate bond strength reduction and other issues caused by traditional indirect restoration protocols. This systematic review assessed whether bond strength is affected by the type of aging conditions, bonding agents, flowable resin composites, impression materials, temporary materials, resin cements, and/or restorative material used within the IDS procedure.
Methods: An exhaustive database search of PubMed, Scopus, Ovid Medline, Embase, Web of Sciences, Cochrane Library, Dentistry & Oral Sciences Source, and ProQuest was conducted up to January 14, 2021 without publication year or language limitations. Only full-text in-vitro studies that pertained to the effect of IDS on bond strength were included, and the methodological quality of each study was assessed through a Risk of Bias (RoB) test.
Results: A total of 811 potentially relevant studies were identified, and 48 articles were included in the qualitative synthesis after screening for the title, abstract, and full texts.
Conclusions: IDS application improves bond strength of indirect restorations to dentin and reduces the negative effects of temporary materials on bond durability of final indirect restorations. Filled DBAs or combinations with flowable resin composite are preferred to protect the IDS layer from conditioning procedures.