2Rosemarie G,Franka S,Manja G,et al.Relationship be-tween occlusal findings and orofacial myofunctional status in pri-mary and mixed dentition[J].J Orofac Orthop,2007,68(1):26.
4Sweets. Integration of certain variants of the facial skeletal in class II division 2 malocclusion[J]. Angle Orthod, 1963, 33 (1):60-63.
5Neilsen II. Vertical malocclusion: etiology development diagnosis and some aspects of treatment[J]. Angle Orthod, 1991,61 (3) : 247-250.
6Linden W. Facial growth and facial orthod [M]. Quintessence Pub- lishing Co. 1986, 17.
7Nanda SK. Patterns of vertical growth in the face [J]. Am J Orthod Dendofae Orthop, 1998,93 (2) : 103-105.
8Gianelly AA. One-phase versus two-phase treatment [ J ]. Am J Orthod Denffacial Orthop, 1995,108 (5) :556 - 559.
9Tulloch JF, Phillips C, Koth G, et al. The effects of early intervention on skeletal pattern in class Ⅱ malocclusion[ J] Am J Orthod Dentofacial Orthop, 1997,111 (4) :391 - 400.
10Tulloch JF, Proffit WR, Phillips C. Outcomes in a 2-phase randomized clinical trial of early Class Ⅱ treatment[ J]. Am J Orthod Dentofacial Orthop, 2004,125 (6) :657 - 667.
5Petes C K. Begg theory and technique past present and future new vis- tas in orthodentics [M]. St Louis, WB Saunders Company, 1983: 209-237.
6Bishara SE, Cummins DM, Zaher AR. Treatment and posttreatment changes in patients with Class II, division 1 malocclusion after ex- traction and nonextraction treatment[J]. Am J Orthod Dentofacial Or- thop, 1997, 111(1): 18-27.
7Nanda RS. Growth changes in skeletal-facial profile and their signifi- cance in orthodontic diagnosis[J]. Am J Orthod, 1971, 59(5): 501-513.
9Desai AL, Hegde M, Dinesh MR, et al. Integration of the Herbst and Begg appliance in the management of severe Class II malocclusion[J]. Contemp Clin Dent, 2014, 5(4): 528-531.
10Chhibber A, Upadhyay M, Shetty VS, et al. Cephalometric compari- son of vertical changes between Begg and preadjusted edgewise ap- pliances[J]. Eur J Orthod, 2011, 33(6): 712-720.