The effect of the compomer filling material on adjacent demineralization lesion : an in vitro study

الملخص EN

This study evaluated the effect of Compoglass restorative material placed in class-II restoration on the adjacent sound enamel.

120 extracted human impacted third molars were divided into 4 groups : Compoglass, Glass Ionomer Cement, Z250 and Control.

Each group contained 15 paired teeth.

Class-II preparation was performed on one tooth of each pair, and restored.

Teeth were placed in demineralization solution for three weeks.

The proximal surface of un-restored teeth were sectioned longitudinally (140-160μm) and analyzed microradiographically.

Chi-square showed significant differences among all groups, (df = 3 = 10.01, p = 0.018).

Pairwise comparisons showed that : Compoglass had less demineralization than the control (df = 1 = 4.8, p = 0.033) and was no different from GIC (df = 1 = 0.2, p = 0.5).

Copmoglass had less demineralization than Z250, however, not significant (df = 1 = 3.4, p = 0.07).

There were significant differences between GIC and Z250 (df = 1 = 5.0, p = 0.03) and the control (df = 1 = 6.6, p = 0.013).

Z250 was no different from the control (df = 1 = 0.14, p = 0.5).

The study demonstrates the ability of Compoglass to intervene before a carious lesion occurs when placed in an adjacent class-II restoration.