Hard and soft tissue changes following the treatment of Class Ⅱ division 1 malocclusion using Twin-block appliance

LI Li-guo1, ZUO Yan-ping2, YUAN Dong-hui1

West China Journal of Stomatology . 2010, (06): 637 -640 . DOI: 10.3969/j.issn.1000-1182.2010.06.017