Abstract
Original Article O'Brien K, Wright J, Conboy F, Sanjie Y, Mandall N, Chadwick S, et al. Effectiveness of early orthodontic treatment with the twin-block appliance: a multicenter, randomized, controlled trial. Part 1: Dental and skeletal effects. Am J Orthod Dentofacial Orthop 2003;124(3):234-43. Level of Evidence 1b Purpose To determine the effectiveness of the twin-block appliance for the correction of Class II Division I malocclusion during the mixed dentition Source of Funding Information not available Type of Study/Design Randomized controlled trial
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