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  • Title: An adjustment in NiTi closed coil spring for an extended range of activation.
    Author: Ravipati RR, Sivakumar A, Sudhakar P, Padmapriya CV, Bhaskar M, Azharuddin M.
    Journal: Int J Orthod Milwaukee; 2014; 25(3):21-2. PubMed ID: 25745719.
    Abstract:
    The Nickel Titanium (NiTi) closed coil springs serve as an efficient force delivery system in orthodontic space closure mechanics. The closed coil springs with the eyelets come in various lengths to broaden its force characteristics for an expedient space closure. However, at a certain point of time of progressive space closure, the coil spring can be expanded no further for an adequate force delivery. In such situations, the clinician prefers to replace the existing spring with another short length spring. The present article describes a simple conservative technique for progressively re-activating the same NiTi closed coil spring for complete space closure.
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