Strain analysis of 9 different abutments for cement-retained crowns on an internal hexagonal implant.

Statement Of Problem: Many aftermarket abutments for cement-retained crowns are available for the tapered screw-vent implant. Aftermarket abutments vary widely, from stock to custom abutments and in materials such as zirconia, titanium, or a combination of the two. How these aftermarket abutments perform under occlusal loads with regard to strain distribution is not clear.

Load to failure of different titanium abutments for an internal hexagon implant.

Statement Of Problem: Several aftermarket abutments are available for a commonly used internal hexagonal connection implant. However, their load to failure performance is unknown when compared with the manufacturer's abutment.

Purpose: The purpose of this in vitro study was to conduct a load to failure comparison of 5 different titanium abutments (manufacturer's and aftermarket) for cement-retained restorations used on an implant with an internal hexagon connection.

Load to failure of different zirconia abutments for an internal hexagon implant.

Statement Of Problem: Various zirconia abutment designs are available to restore implant systems. Fracture resistance is one of the criteria involved in selecting among these options.

Purpose: The purpose of this in vitro study was to measure and compare load to failure for 5 zirconia abutments for an internally hexagon implant.