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pro vyhledávání: '"Josef C. Feldner"'
Publikováno v:
American Journal of Orthodontics and Dentofacial Orthopedics. 106:265-272
The purpose of this study was to investigate the torque-deformation characteristics of the following four types of polycarbonate brackets: (1) pure polycarbonate, PPC (anterior Miura, RMO, Denver, Colo.), (2) ceramic reinforced polycarbonate, CRPC (S