Quintessence Int 47 (2016), No. 2 (25.01.2016)
Page 93-101, doi:10.3290/j.qi.a35260, PubMed:26665259
Objective: The efficacy of flowable composite in improving marginal
adaptation or reducing microleakage is not fully understood. The purpose
of this study was to systematically evaluate existing evidence to
verify whether an application of flowable composite as a liner provided
less microleakage in Class 2 composite restorations.
Materials: PubMed, ISI (Web of Science), and Scopus databases were
searched according to the selected keywords, up to 15 Feb 2015, without
any restriction on date or language. Full texts of published articles
that seemed to meet primary criteria for inclusion in this research were
obtained. Data of studies were extracted if they were assessed as high
or moderate level of evidence. Due to the variation of methods used in
different studies, they were divided into five groups: groups 1 and 2,
studies that evaluated the effect of flowable composite as a liner on
dentinal or enamel margins and applied flowable composite on all of the
cavity wall margins; groups 3 and 4, studies that evaluated the effect
of flowable composite as a liner on dentinal and enamel margins and
applied flowable composite only on gingival margin; and group 5,
Results: The initial search yielded 1,370
publications. After hand searching, six extra studies were included in
the review. The abstracts of all were read independently by AB and SG.
After methodologic assessment and evaluation of the level of evidence,
18 studies were selected for this study. The results of this study
indicate that flowable composite liners have no significant effect on
microleakage of composite restorations in all of five groups.
Application of flowable composite as a liner in composite restorations
cannot reduce microleakage or improve clinical performance.