[Fracture resistance of human maxillary molars with MOD amalgam or composite fillings]

The fracture resistance of human maxillary molars was tested following different types of cavity preparation and filling with various materials. The untreated controls and teeth treated with amalgam/Dentin Adhesive showed the highest strength values. A comparable fracture resistance was found in teeth with amalgam or composite fillings and direct composite inlays, these values being significantly lower than in the controls. The lowest strength values measured were those of the unfilled teeth with prepared cavities.