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 .
Effectiveness of ART and traditional amalgam approach in restoring single-surface cavities in posterior teeth of permanent dentitions in school children after 6.3 years.
OBJECTIVES The Atraumatic Restorative Treatment ( ART ) approach was compared with the traditional amalgam ( TA ) approach in order to test their appropriateness to complement a preventive and educational school oral health programme in Syria . METHODS Using a parallel group design , 370 and 311 grade 2 children were r and omly assigned to the ART and the TA group respectively . Eight dentists placed 1117  single- and multiple-surface restorations .  A modified actuarial method was used to estimate survival curves . The jackknife method was applied to calculate the st and ard error in the cumulative survival percentages . RESULTS A statistically significant difference in cumulative survival percentages between single-surface non-occlusal ART and comparable amalgam restorations was observed after 4.3 , 5.3 and 6.3 years . The survival of single-surface non-occlusal  ART  posterior restorations ( 80.2 + /- 4.9 % ) was statistically significantly higher than that of occlusal posterior ART restorations ( 64.8 + /- 3.9 % ) at evaluation year 6.3 . There was no statistically significant difference observed between survival percentages of large ( 55.8 + /- 10 % ) and that of small ( 69.2 + /- 4.6 % ) single-surface posterior ART restorations after 6.3 years . There was an operator effect observed for single-surface ART and comparable amalgam restorations . Secondary caries was observed in 2.3 % of single-surface ART restorations and in 3.7 % of single-surface amalgam restorations during the 6.3 year observation period . CONCLUSIONS The ART approach provided higher survival percentages for single-surface restorations than the TA approach over 6.3 years and is therefore appropriate for use in school oral health programmes . Secondary caries was only a minor reason for ART restorations to fail . An operator effect was observed for both treatment approaches
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 .