Study	Reason for exclusion
Abesi 2012	No intervention using sealant was included
Abuchaim 2010	Not a randomised controlled trial
Agustsdottir 2010	No intervention using sealant was included
Bille 1989	No intervention using sealant was included
Bravo 1997	No proximal sealing was applied
Downer 1995	Not a clinical study
Edward 1997	No intervention using sealant was included
Friedman 1976	Not a randomised controlled trial
Ganss 1999	No proximal sealing was applied
Griffin 2008	Not a clinical study
Gustafsson 2000	No intervention using sealant was included
Hintze 1997	No intervention using sealant was included
Hopcraft 2005	No intervention using sealant was included
Kielbassa 2009	Not a clinical study
Kilpatrick 1996	No proximal lesions were included
Li 2002	No intervention using sealant was included
Lith 2002	No intervention using sealant was included
Llena‐Puy 2005	No intervention using sealant was included
Mejare 1990	No intervention using sealant was included
Müller‐Bolla 2006	Not a clinical study
Newmann 2009	No intervention using sealant was included
Paris 2007	Not a clinical study
Ricketts 2006	Not a clinical study
Ridell 2008	No intervention using sealant was included
Splieth 2010	Not a clinical study
Stenlund 2003	No intervention using sealant was included
Vanderas 2003	No intervention using sealant was included
Vidnes‐Kopperud 2011	No intervention using sealant was included