AND PRACTICAL IMPLICATION S Because new caries lesions in the margins of restorations are the main reason for failure and replacement of restorations in primary teeth , it is important to know whether there is a benefit in using GICs in both occlusal and occlusoproximal cavities
BACKGROUND Fluoride released from glass ionomer cements ( GICs ) is capable of preventing caries lesions .
However , the preventive effect in margins of occlusal and occlusoproximal restorations have not been proved .
The longevity of different restorations in primary teeth.
BACKGROUND AND AIM This paper review s three published papers and adds results from a fourth study which aim ed to determine which restorative material would be the best alternative(s ) to amalgam ( AM )  in primary teeth . DESIGN All studies had a practice -based design and were part of the routine treatment of children and adolescents . The clinicians were assigned which material s to use in a r and omised matter in the first three studies which lasted for 7 - 8 years . In the fourth study conducted 4 years after the initial studies , the clinicians were free to select the restorative material s. RESULTS AND CONCLUSIONS Resin modified glass ionomer ( RMGI ) and compomer ( COM ) restorations showed similar longevity compared with AM , whereas conventional GI restorations showed significantly shorter longevity . The studies indicated that the ' new and improved ' material s based on in vitro tests did not always show enhanced clinical properties . In the last study , where clinicians freely selected the restorative material s they used in their practice s , seven used COM , one used conventional GI material s and one used a combination of the two types of material
AND PRACTICAL IMPLICATION S Because new caries lesions in the margins of restorations are the main reason for failure and replacement of restorations in primary teeth , it is important to know whether there is a benefit in using GICs in both occlusal and occlusoproximal cavities
BACKGROUND Fluoride released from glass ionomer cements ( GICs ) is capable of preventing caries lesions .
However , the preventive effect in margins of occlusal and occlusoproximal restorations have not been proved .