Orthodontics
New orthodontics study findings have been reported by researchers at University of Otago
Published in Medical Devices and Surgical Technology Week, August 9th, 2009
According to recent research from Dunedin, New Zealand, "This in-vitro study investigated the loads ( forces), moments, and moment-to-force ratios ( M: F) generated during the activation and deactivation of T closing loops made of rectangular nickel-titanium ( NiTi) and titanium-molybdenum alloy (TMA) wires incorporating either 0 degrees, 15 degrees, or 30 degrees of preactivation. T-loop designs were formed in the wires by using a standard template, and, for the NiTi alloys, a temperature of 510 degrees C for 9 minutes was used."
"Forces and moments of the T-loops were measured at 35.6 degrees +/- 6 0.5 degrees C, and these were used to calculate the M: F ratio....
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