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van der Plas, MC; Janssen, Kl; Pandis, Nikolaos; Livas, Christos (2017). Twin Block appliance with acrylic capping does not have a significant inhibitory effect on lower incisor proclination. Angle orthodontist, 87(4), pp. 513-518. Angle Orthodontists Research and Education Foundation 10.2319/102916-779.1
