Table 2: Differential scanning calorimetry-measured temperature and enthalpy changes for phase transformations during cooling of thermally activated Nickel-Titanium wires (°C)

Commercial Wires Condition Cooling Onset (°C) Cooling Endset (°C) Enthalpy (J/g)
Copper NITI ORMCO “As received” 1 13.50 -10.38 13.36
Copper NiTi ORMCO “As received” 2 14.02 -9.98 14.97
Copper NiTi ORMCO “60 days in clinical use” 13.69 -10.55 13.50
Copper NiTi ORMCO “60 days in clinical use +
sterilization process”
14.14 -9.88 14.48
NeoSentalloy GAC “As received” 1 -22.39 -59.44 5.96
NeoSentalloy GAC “As received” 2 -23.42 -59.39 6.14
NeoSentalloy GAC “60 days in clinical use” -22.93 -51.83 8.04
NeoSentalloy GAC “60 days in clinical use +
sterilization process”
-22.29 -51.15 8.51
Orthometric Flexy Thermal 37°C “As received” 1 17.80 -0.48 17.88
Orthometric Flexy Thermal 37°C “As received“ 2 17.50 -1.57 17.70
Orthometric Flexy Thermal 37°C “60 days in clinical use” 17.33 -1.53 17.42
Orthometric Flexy Thermal 37°C “60 days in clinical use +
sterilization process”
17.46 -1.40 16.86
Highland Metals “As received” 1 -31.35 -61.03 2.27
Highland Metal “As received”2 -32.90 -52.41 0.30
Highland Metals “60 days in clinical use” -31.75 -65.04 1.77
Highland Metals “60 days in clinical use +
sterilization process”
-31.17 -60.86 3.17

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