Semi-attached quad-helix appliance can expand the maxillary arches in patients with cleft lip and palate before alveolar bone grafting

Huang Lieping1, Huang Ning2, Deng Xiaoshu3, Chen Xudao4.

West China Journal of Stomatology . 2012, (4): 393 -395 . DOI: 10.3969/j.issn.1000-1182.2012.04.015