Authors: Akshay S Mahajan, Amol A. Verulkar, Ratnadip A. Lohakpure, Twinkle D Bajaj, Shweta A. Dhope, Sara R. Bhurani
Ni-Ti open coil springs are often used for opening spaces for crowded or for distalization of the molar teeth. Predetermining the length of open coil spring required to open up the exact amount of space is rather difficult, and sometimes, the length of the open coil spring falls short to open up the entire space required. Open coil spring usually requires reactivation to gain enough space in the arch or between two adjacent teeth. This paper highlights the chairside method of reactivation of NiTi open coil spring with the use of modified ‘S’ shape ring without removing the base archwire. Keywords: NiTi Open Coil Spring, Modified ‘S’ shape ring, Space regaining
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