Clinical performance of a condensable metal-reinforced glass ionomer cement in primary molars.
OBJECTIVE
Aim of the present study was to evaluate the clinical suitability of the condensable metal-reinforced glass ionomer cement Hi-Dense in classes I and II cavities of primary molars.


METHODS
Seventeen children received a total of fifty four Hi-Dense fillings (nineteen class I and thirty five class II). The restorations were clinically assessed at baseline, after one and after two years of clinical service according to modified USPHS codes and criteria. The restorations were replicated in each recall and representative samples were qualitatively analysed under a SEM.


RESULTS
Over the observation period of two years, five restorations failed due to total retention loss, two fillings needed replacement because of persisting hypersensitivity, one filling was lost because of an unsuccessful endodontic treatment, and four restorations remained intact until natural exfoliation (Two year survival rate: 92% for Class I and 66% for Class II). The SEM analysis of surfaces and marginal areas exhibited an inferior adhesive performance primarily in proximal areas, whereas a negative step formation due to wear was frequently observed in occlusal parts.


CONCLUSIONS
The results clearly indicate that the condensable, metal-reinforced GIC Hi-Dense reveals no enhanced performance and lifetime expectancy for class II restorations in primary molars when compared to other non-resin-modified GICs.
Krämer
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N
Polyclinic for Operative Dentistry and Periodontology, University of Erlangen-Nuremberg, Germany. kraemer@dent.uni-erlangen.de
Frankenberger
R
R
D016722:Cermet Cements; D002648:Child; D002675:Child, Preschool; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D005899:Glass Ionomer Cements; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008963:Molar; D013499:Surface Properties; D016019:Survival Analysis; D014094:Tooth, Deciduous
D016722:Cermet Cements; D005899:Glass Ionomer Cements; C106661:Hi-Dense