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Effectiveness of early orthodontic treatment with the Twin-block appliance: a multicenter, randomized, controlled
Kevin O'Brien1, Jean Wright, Frances Conboy
1Orthodontic Unit, Department of Dental Medicine and Surgery, University Dental Hospital of Manchester, Higher Cambridge Street, Manchester M15 6FH, UK. Kevin.O'Brien@man.ac.uk
Abstract:
The aims of this project were to evaluate whether early orthodontic treatment with the Twin-block appliance for the developing Class II Division 1 malocclusion resulted in any psychosocial benefits. This multicenter trial was carried out in the United Kingdom, with 174 children aged 8 to 10 years with Class II Division 1 malocclusions randomly allocated to receive treatment with Twin-block appliances or to an untreated control group. Data were collected at the start of the study and 15 months later. Results showed that early treatment with Twin-block appliances resulted in an increase in self-concept and a reduction of negative social experiences. The subjects also reported treatment benefits that could be related to improved self-esteem. Further research is needed to determine the extent to which these effects translate into social behavior and experiences.