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Fracture resistance of amalgam/glass-polyalkenoate open sandwich Class II restorations: an in vitro study. J Dent 2008 Nov;36(11):873-7



Pubmed ID




Scopus ID

2-s2.0-53749095180 (requires institutional sign-in at Scopus site)   3 Citations


OBJECTIVE: To investigate the effect of two glass-polyalkenoate restorative materials used as root-dentin replacements on the fracture strength of Class II amalgam restorations.

MATERIALS AND METHODS: Class II slot preparations extending 2mm apical to the cemento-enamel junction were made in 30 teeth and randomly assigned to three groups. Group 1 (Control): restored entirely with amalgam (Tytin, Sybron Kerr, Orange, CA, USA). Group 2: The root-dentin area was restored with a viscous conventional glass-polyalkenoate restorative material (Fuji IX GP, GC America, Alsip, IL, USA), and the remainder of the preparation restored with amalgam. Group 3: The root-dentin area was restored with a resin-modified glass-polyalkenoate restorative material (Fuji II LC, GC America) and the remainder restored with amalgam. The amalgam restorations were loaded in compression to failure and the data analyzed using one-way ANOVA (alpha=0.05).

RESULTS: No significant differences in fracture strength were found.

CONCLUSION: Root-dentin replacement with the tested glass-polyalkenoate materials did not affect the fracture strength of Class II amalgam restorations.

Author List

Roberts HW, Vandewalle KS, Charlton DG, Berzins DW


David Berzins BS,PhD Graduate Program Director for Dental Biomaterials in the General Dental Sciences/Dental Biomaterials department at Marquette University

MESH terms used to index this publication - Major topics in bold

Analysis of Variance
Dental Amalgam
Dental Cavity Preparation
Dental Marginal Adaptation
Dental Restoration Failure
Dental Restoration, Permanent
Glass Ionomer Cements
Materials Testing
Molar, Third
Random Allocation
Root Caries
Stress, Mechanical
Tooth Cervix