IADR Abstract Archives
Primary Stability of NanoShort, Short and Standard Dental Implants.
Objectives: Aim of the present study was to compare the insertion torque (IT), the pull-out values (RT) and the resonance frequency analysis (RFA) values of Nanoshort (3 mm long), Short (7 mm long) and Standard length implants (10 mm long) inserted in polyurethane solid rigid blocks and sheets of different thicknesses and densities.
Methods: The simulation has been performed comparing the IT, the pull-out values, and the RFA of Nanoshort, Short and Standard dental implants (AoN implants S.r.l., Grisignano di Zocco, Vicenza, Italy) positioned in polyurethane foam solid rigid blocks with densities of 10 and 20 Per Cubic Feet (PCF) and sheets of 1 mm, 2 mm and 3 mm thicknesses and of 20 and 30 PCF densities.
Results: The IT measurements for Short implants ranged between 12.57 Ncm in 20 PCF of 1 mm to 39.2 Ncm in 3mm 30 PCF. The higher the polyurethane density and the thicker the additional cortical sheets, the higher the IT and pull-out for all types of implants (p<0.05). Increased IT values in Short implants when inserted in 30 PCF of 3 mm, lower values for 4 mm diameter Nanoshort implants when inserted in 20 of 1 mm cortical (4-6 Ncm) In these latter cases, however, the primary stability appeared to be sufficient (p<0.05). In 3 mm sheets, the IT values for Nanoshort implants were good (15-20 Ncm). No significant difference were detected about IT and RT within the implants tested on 10 PCF (without cortical layer) and 1mm Lamina 20PCF/30PCF (p<0.05).
Conclusions: The NanoShort and Short implants showed a good level of primary stability in artificial bone in all experimental situations, the Nanoshort even with very low ISQ values, and could represent a useful tool to avoid regenerative procedures in atrophic jaws.
Methods: The simulation has been performed comparing the IT, the pull-out values, and the RFA of Nanoshort, Short and Standard dental implants (AoN implants S.r.l., Grisignano di Zocco, Vicenza, Italy) positioned in polyurethane foam solid rigid blocks with densities of 10 and 20 Per Cubic Feet (PCF) and sheets of 1 mm, 2 mm and 3 mm thicknesses and of 20 and 30 PCF densities.
Results: The IT measurements for Short implants ranged between 12.57 Ncm in 20 PCF of 1 mm to 39.2 Ncm in 3mm 30 PCF. The higher the polyurethane density and the thicker the additional cortical sheets, the higher the IT and pull-out for all types of implants (p<0.05). Increased IT values in Short implants when inserted in 30 PCF of 3 mm, lower values for 4 mm diameter Nanoshort implants when inserted in 20 of 1 mm cortical (4-6 Ncm) In these latter cases, however, the primary stability appeared to be sufficient (p<0.05). In 3 mm sheets, the IT values for Nanoshort implants were good (15-20 Ncm). No significant difference were detected about IT and RT within the implants tested on 10 PCF (without cortical layer) and 1mm Lamina 20PCF/30PCF (p<0.05).
Conclusions: The NanoShort and Short implants showed a good level of primary stability in artificial bone in all experimental situations, the Nanoshort even with very low ISQ values, and could represent a useful tool to avoid regenerative procedures in atrophic jaws.