Class I restorations and restorations placed using rubber dam presented better AFR .
An elevated number of failures were observed due to recurrent caries , highlighting the need for professionals to work with a health-promoting approach .
BACKGROUND Several restorative material s with specific indications are used for filling cavities in primary teeth .
AIM To systematic ally review the literature in order to investigate the longevity of primary teeth restorations  and the reasons for failure .
Clinical behaviour of glass ionomer restorations in primary teeth.
OBJECTIVE To compare a silver-reinforced glass ionomer material ( cermet ) with a resin-modified glass ionomer in minimal Class II preparations in primary teeth . METHODS Matched pairs of primary molars with approximal caries that required operative treatment were used . Each cavity was filled with either Vitremer or Ketac-Silver . The restorations were followed for at least 36 months and examined annually using bitewing radiographs and clinical inspections . Impressions were taken at each recall and models were examined microscopically . RESULTS After 36 months , one of the resin-modified glass ionomer ( RMGI ) restorations and 13 ( 26.5 % ) of the silver cermet restorations had failed . The RMGI failed because of secondary caries , while most of the failures of the silver cermet fillings were marginal defects alone or in combination with secondary caries . The median survival time ( MST ) for the silver cermet restorations was 37 months . The RMGI restorations had a MST exceeding 42 months , but MST could not be calculated exactly because of the low failure rate during the study period . CONCLUSIONS The resin-modified glass ionomer had the overall best performance of the two material s under comparison . The silver cermet material can not be recommended for Class II restorations in primary teeth
Class I restorations and restorations placed using rubber dam presented better AFR .
An elevated number of failures were observed due to recurrent caries , highlighting the need for professionals to work with a health-promoting approach .
BACKGROUND Several restorative material s with specific indications are used for filling cavities in primary teeth .
AIM To systematic ally review the literature in order to investigate the longevity of primary teeth restorations  and the reasons for failure .