Benefit of early class II treatment: Progress report of a two-phase randomized clinical trial
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Headgear versus functional regulator in the early treatment Class II, division 1 malocclusion: A randomized clinical trial
Ghafari J, Shofer FS, Jacobsson-Hunt U, Markowitz DL, Laster LL. Headgear versus functional regulator in the early treatment Class II, division 1 malocclusion: A randomized clinical trial. Am J Orthod Dentofacial Orthop 1998;113:51-61.
Anteroposterior skeletal and dental changes after early class treatment with bionators and headgear
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