The meta- analysis of the data in the included studies demonstrated that only one variable ( marginal adaptation after 12 months ) showed statistically significant outcomes , in which methacrylates-based composites presented significantly better results than resin composites containing modified monomers .
The good level of the scientific evidence as well as the overall low risk of bias of the included studies indicate that composites with silorane , ormocer or bulk-fill type modified monomers have a clinical performance similar to conventional resin composites
Polymerization shrinkage of resin composite can compromise the longevity of restorations .
To minimize this problem , the monomeric composition of composites have been modified .
The objective of this study was to conduct a meta- analysis to assess the clinical behavior of restorations performed with low polymerization shrinkage resin composite  in comparison with traditional methacrylates-based resin composite .
CONSORT 2010 Statement: Updated guidelines for reporting parallel group randomised trials.
R and omised controlled trials , when appropriately design ed , conducted , and reported , represent the gold st and ard in evaluating healthcare interventions . However , r and omised trials can yield biased results if they lack method ological rigour [ 1 ] . To assess a trial accurately , readers of a published report need complete , clear , and transparent information on its methodology and findings . Unfortunately , attempted assessment s frequently fail because authors of many trial reports neglect to provide lucid and complete descriptions of that critical information [ 2,3,4 ] . That lack of adequate reporting fuelled the development of the original CONSORT ( Consoli date d St and ards of Reporting Trials ) statement in 1996 [ 5 ] and its revision five years later [ 6,7,8 ] . While those statements improved the reporting quality for some r and omised controlled trials [ 9,10 ] , many trial reports still remain inadequate [ 2 ] . Furthermore , new method ological evidence and additional experience has accumulated since the last revision in 2001 . Consequently , we organised a CONSORT Group meeting to up date the 2001 statement [ 6,7,8 ] . We introduce here the result of that process , CONSORT 2010 .
The meta- analysis of the data in the included studies demonstrated that only one variable ( marginal adaptation after 12 months ) showed statistically significant outcomes , in which methacrylates-based composites presented significantly better results than resin composites containing modified monomers .
The good level of the scientific evidence as well as the overall low risk of bias of the included studies indicate that composites with silorane , ormocer or bulk-fill type modified monomers have a clinical performance similar to conventional resin composites
Polymerization shrinkage of resin composite can compromise the longevity of restorations .
To minimize this problem , the monomeric composition of composites have been modified .
The objective of this study was to conduct a meta- analysis to assess the clinical behavior of restorations performed with low polymerization shrinkage resin composite  in comparison with traditional methacrylates-based resin composite .