Retentive Strength of Stainless-Steel Crown with Three Different Luting Cements - An In vitro Study

Although stainless-steel crowns (SSCs) have a high clinical success rate, a key reason for its clinical failure is loss of crown due to cementation failure. Therefore, the choice of cementation material has an important effect on SSC retention.

To evaluate the retention strength of SSCs luted on primary molars with glass ionomer cement (GIC), resin-modified glass ionomer cement (RMGIC) and resin-based cement.

A total of 45 freshly extracted human primary molars were prepared to receive SSCs and randomly divided into three equal groups, to receive the different luting cements: conventional glass ionomer, resin-modified glass ionomer and resin luting cement. The teeth were then stored in artificial saliva for 24 h. The retentive strength of the crowns was determined using a specially designed Universal Testing Machine.

To compare the mean retentive strength between cements, ANOVA with post hoc test was applied.

Mean retentive strength for GC GOLD Label 1 group was 230.30 ± 13.46; GC FujiCEM group was 194.78 ± 13.03; and 269.25 ± 11.28 for the GC G-CEM One group. A comparison of luting cement showed the retentive strength of GC G-CEM One cement significantly higher than the rest of the two cements ( P < 0.001). The retentive strength of GC GOLD Label 1 cement was significantly higher than GC FujiCEM cement ( P < 0.001).

Resin cement (GC G-CEM One) significantly improved crown retention when compared with RMGIC (GC FujiCem) and GIC (GC Gold label 1).