Influencia del ácido ascórbico en pruebas biomecánicas deimplantes dentales. Estudio experimental en conejos

Abstract

Objective: To compare, through biomechanical torque tests and resonance frequency analysis, Oxalife surface titanium implants, without and with vitamin C, placed in rabbit femurs.Methods: 17 Tree-Oss Rapid surface Oxalife implants of 7 mm in length and 3.3 mm in diameter with external hexagon connection were used, placed in the femur of 8 hybrid breed rabbits.Following the drilling sequence indicated by the manufacturer. Insertion torque and resonance frequency analysis were recorded to measure the initial stability coefficient. Euthanasia was performed at 60 days; then the implants were exposed to measure the final or biological stability coefficient through resonance frequency analysis (Osstell) and removal torque (Mark-10 Gauge). The data were subjectedto parametric contrast Student test.Results in Ncm: Mean insertion torque value for the experimental group 16.5 ± 3.7 and for the control group 23.3 ± 4.2, with a significant difference (p<0.01). Mean removal torque for the experimental group 69.3 ± 17.4, and control group 87.2 ± 24.9 without significant differences (p=0.14). Average initial ISQ for the experimental group 40.2 ± 7.8 and for the control group 44.7 ± 6.9 (p=0.24). Final ISQ average for the experimental group 50.8 ± 1.1 and for the control 50.5 ± 2.0 (p=0.77) without differences in both measurements.Conclusion: The addition of vitamin C on the surface of the implant would not have a significant effect regarding the stability values during osseointegration