Neo Sentalloy

Three nickel-titanium wires studied by TMDSC had been previously investigated by conventional DSC [25] superelastic Nitinol SE (3M Unitek) Neo Sentalloy, which has in vivo shape memory (GAC International, Bohemia, NY, USA) and nonsuperelastic Nitinol. The Nitinol SE and Neo Sentalloy archwires had 0.016 inch x 0.022 inch cross-sections, and the Nitinol archwires were 0.019 x 0.025 inch, also a clinically popular size. In addition, the effect of permanent deformation on transformations in Nitinol SE and Neo Sentalloy was studied after bending the archwires to 135° with orthodontic pliers. 

Similar results were obtained for TMDSC analyses of the in vivo shape-memory wire, Neo Sentalloy, shown in Figures 9 and 10 [37]. While our previous DSC study [25] suggested that direct transformation of martensite to austenite occurs during heating, the nonreversing heat flow curve in Figure 9 shows that a two-step transformation involving R-phase actually takes place. 

Figure 9. TMDSC reversing and nonreversing heat flow curves for the heating cycle of Neo Sentalloy [37]. Reproduced with permission from Elsevier Science.

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See also in sourсe #XX -- [ , , ]

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