Cad Cam Principles And Applications By Pn Rao.pdf =LINK=
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A landmark study was published in 2001, by Scuzzo et al. [24], which gave new perspective to lingual orthodontics describing the possibility of permanently eliminating compensating bends, with a Straight-Wire system, based on differential bracket positioning, placed more to the cervical region of the tooth. Within this context, the PSWb [25] (Prieto Straight-Wire brackets), a Brazilian bracket that is now in its third generation, was developedbased on three principles: 2b1af7f3a8