Conclusions ART single-surface restorations  presented high survival percentages in both primary and permanent posterior teeth , whilst ART multiple-surface restorations presented lower survival percentages .
ART sealants presented a high-caries-preventive effect .
Clinical relevance ART is an effective evidence -based option for treating and preventing carious lesions in primary and permanent posterior teeth
Objective The aim of the present study is to up date the results of two previous meta-analyses , published in 2006 and 2012 , on the survival percentages of  atraumatic restorative treatment ( ART ) restorations and ART sealants .
The current meta- analysis includes Chinese publications not investigated before .
Two years survival rate of Class II ART restorations in primary molars using two ways to avoid saliva contamination.
AIM To compare the survival rates of Class II Atraumatic Restorative Treatment ( ART ) restorations placed in primary molars using cotton rolls or rubber dam as isolation methods . METHODS A total of 232 children , 6 - 7 years old , both genders , were selected having one primary molar with proximal dentine lesion . The children were r and omly assigned into two groups : control group with Class II ART restoration made using cotton rolls and experimental group using rubber dam . The restorations were evaluated by eight calibrated evaluators ( Kappa > 0.8 ) after 6 , 12 , 18 and 24 months . RESULTS A total of 48 ( 20.7 % ) children were considered dropout , after 24 months . The cumulative survival rate after 6 , 12 , 18 and 24 months was 61.4 % , 39.0 % , 29.1 % and 18.0 % , respectively for the control group , and 64.1 % , 55.1 % , 40.1 % and 32.1 % , respectively for the rubber dam group . The log rank test for censored data showed no statistical significant difference between the groups ( P = 0.07 ) . The univariate Cox Regression showed no statistical significant difference after adjusting for independent variables ( P > 0.05 ) . CONCLUSION Both groups had similar survival rates , and after 2 years , the use of rubber dam does not increase the success of Class II ART restorations significantly
Conclusions ART single-surface restorations  presented high survival percentages in both primary and permanent posterior teeth , whilst ART multiple-surface restorations presented lower survival percentages .
ART sealants presented a high-caries-preventive effect .
Clinical relevance ART is an effective evidence -based option for treating and preventing carious lesions in primary and permanent posterior teeth
Objective The aim of the present study is to up date the results of two previous meta-analyses , published in 2006 and 2012 , on the survival percentages of  atraumatic restorative treatment ( ART ) restorations and ART sealants .
The current meta- analysis includes Chinese publications not investigated before .