Shuangshuang Shi

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Efficacy of a modified twin block appliance compared with the traditional twin block appliance in children with hyperdivergent mandibular retrognathia: protocol for a single-centre, single-blind, randomised controlled trial

Nov 1, 2023 | bmjopen.bmj.com | Anqi Liu |Wei Zhang |Weihua Zhang |Shuangshuang Shi

Methods and analysisThis study is designed as a single-centre, single-blind, randomised parallel controlled trial, aiming to evaluate the efficacy of a modified LLTB and compare its effect with the traditional TB in children with hyperdivergent mandibular retrognathia. The study is registered at http://www.chictr.org.cn/index.aspx, which can be accessed online. The trial will be performed in the Department of Orthodontics at Shanghai Stomatological Hospital.

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