Compressive Strength Evaluation of Three Distinct Implant Design Approaches

OBJECTIVES: The study was done to assess the implant–abutment interface static compressive. strength of three design types and implant–abutment connection failure style. MATERIALS AND METHODS: The implants at 306 with respect to the y-axis were aligned using a stainless steel holding device. Twenty specimens from each system totaled 60 total. A unidirectional vertical piston in a computer-controlled universal testing machine (MTS 810) generated static compression loading until failure. Specimens were macroscopically examined for fracture of the screw and implant, abutment looseness, and longitudinal displacement. Analysis of variance was used to analyze the data (ANOVA). RESULT: The screw-vent system had a mean compressive strength of 335.6 22.7 psi for the Unipost system, 384.3 37.1 psi for the screw-vent system, and 245.3 25.4 psi for the ITI-1 piece abutment connection. CONCLUSION: The connection between the Unipost implant and abutment showed a statistically significant variation.