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 .
The use of a reinforced glass-ionomer cermet for the restoration of primary molars: a clinical trial
The development of adhesive restorative material s has led to more conservative cavity design with greater reliance being placed upon the bond of a material with tooth tissue for retention of the restoration . Glass-ionomer cements may offer particular advantages but have yet to achieve the durability reported for amalgam . This study reports on the results of a 2.5-year prospect i ve clinical trial comparing the durability of two glass-ionomer cements , a conventional material ( Ketac Fil ) and a metal reinforced cermet ( Ketac Silver ) in the restoration of Class II lesions in primary molars . Forty-six pairs of restorations were assessed in 37 children . The failure rate of Ketac Fil , 23 % , was significantly lower than that of Ketac Silver , 41 % ( P < 0.05 ) . The median survival time of the Ketac Fil restorations was significantly greater , 25.3 months , than that of the Ketac Silver restorations , 20.3 months ( P < 0.05 ) . These values may be an underestimate of the true longevity of both restoration types as many of the restorations survived intact at the censor date . Neither the age of the child nor the tooth restored influenced the durability of the restoration . The deterioration in both marginal integrity and anatomic form of the Ketac Silver restorations  was significantly greater than the Ketac Fil restorations ( P < 0.05 ) . The durability of Ketac Silver was such that it can not be recommended for use in restoring carious primary
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 .