Table 3: Differential scanning calorimetry-measured temperature and enthalpy changes for phase transformations during heating of thermally activated Nickel-Titanium wires (°C)

Commercial Wires Condition Heating Onset (°C) Heating Endset (°C) Enthalpy (J/g)
Copper NITI ORMCO “As received” 1 9.04 31.16 12.91
Copper NiTi ORMCO “As received” 2 8.96 30.96 14.29
Copper NiTi ORMCO “60 days in clinical use” 8.17 30.53 13.50
Copper NiTi ORMCO “60 days in clinical use +
sterilization process”
8.86 31.20 14.23
NeoSentalloy GAC “As received 1 13.79 30.72 17.53
NeoSentalloy GAC “As received” 2 12.33 29.29 18.03
NeoSentalloy GAC “60 days in clinical use” 19.87 28.78 17.96
NeoSentalloy GAC “60 days in clinical use +
sterilization process”
19.92 28.80 17.96
Orthometric Flexy Thermal 37°C “As received” 1 17.76 35.64 17.44
Orthometric Flexy Thermal 37°C “As received “ 2 17.16 35.42 16.80
Orthometric Flexy Thermal 37°C “60 days in clinical use ” 17.38 35.32 16.62
Orthometric Flexy Thermal 37°C “60 days in clinical use +
sterilization process”
17.38 35.50 16.51
Highland Metals “As received” 1 10.98 32.81 16.42
Highland Metal “As received”2 9.95 38.70 14.01
Highland Metals “60 days in clinical use” 10.44 30.95 16.63
Highland Metals “60 days in clinical use +
sterilization process”
9.29 33.71 16.08

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