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 .
Three-year follow up assessment of Class II restorations in primary molars with a polyacid-modified composite resin and a hybrid composite.
PURPOSE To evaluate the 3-year success rate of Class II restorations in primary molars performed with Compoglass , a polyacid-modified resin-based composite ( compomer ) and TPH-Spectrum , a hybrid resin-based composite . MATERIAL AND METHODS In a dental practice , in each of 52 children at least two primary molars were restored . 96 primary molars were restored with TPH-Spectrum using the total-etching-technique and 94 with Compoglass without acid etching prior to application of the bonding adhesive . The restorations were assessed at baseline ( 1996 ) and after 1 and 2 yrs according to the Ryge criteria . After 3 yrs the restorations ( 46 Compoglass , 46 TPH-Spectrum ) of 35 children were re-evaluated . RESULTS After 3 yrs the cumulative success rate according to the Kaplan-Meier-estimation was 79.5 % for the Compoglass and 85.8 % for the TPH-Spectrum restorations . No significant differences were observed between the two material s with respect to color matching , cavosurface discoloration , anatomic form , margin integrity and caries assessment . The present investigation revealed that TPH-Spectrum and Compoglass are suitable material s for restoring primary molars . CLINICAL SIGNIFICANCE After an observation period of 3 years , both TPH-Spectrum and Compoglass demonstrated acceptable clinical results
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 .