Letteratura scientifica

Abstract

 

The objective of this study was to evaluate the biomechanical fixation of four different implant surfaces at early implantation times in vivo in a canine radius model.

 

Methods: External hexagon Branemark type implants were utilized, and included the following surfaces: Microblasted (MI) (Ossean, Intra-Lock International), acid-etched and microblasted (AAM) (Nanoss, AMG), Anodized (A) (TiUnite, Nobel Biocare), and discrete crystalline deposition (DCD) (Nanotite, Biomet 3i) The implants were placed in the central region of the radii of 8 beagle dogs, remaining for 10 and 30 days in vivo. Following euthanisation, the implants were torqued to interface failure in a servoelectric system. Statistical analysis was performed at 95% confidence level by ANOVA considering Torque at dependent variables and implant surface and time in vivo as independent variables.

 

Results: No significant differences between surfaces were observed in torque at 2 weeks in vivo. At 4 weeks, the AAM presented significantly higher torque values compared to the DCD and A surfaces (p< 0.001). The MI surface presented an intermediate value between the AAM, and the DCD and A surfaces. Significantly higher torque values were observed at 30 days compared to 10 days (p> 0.22).

 

Conclusion: Significantly higher biomechanical fixation was observed for the AAM surface group when similar implant macrogeometries were utilized during mechanical testing.

Biomechanical Testing of Microblasted, Acid-Etched/Microblasted Surfaces,Anodized, and Discrete Crystalline Deposition in the Canine Radius Model.

 

 

2010, Academy of Osseointegration, Annual Meeting, P221

Implant

Surface: 11

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