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pro vyhledávání: '"Janet V. Arnold"'
Publikováno v:
American Journal of Orthodontics and Dentofacial Orthopedics. 102:127-133
This in vitro study was designed to determine the force degradation of closed coil springs made of stainless steel (SS), cobalt-chromium-nickel (Co−Cr−Ni) and nickel-titanium (Niti) alloys, when they were extended to generate an initial force val