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Soft and Hard Tissue Changes Following treatment of class Ⅱ division 1 Malocclusion with Twin-Block and Myofunctional Appliance: A Pilot Study

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Chinese Journal Of Plastic and Reconstructive Surgery 2020年第4期2卷 217-227页

作者： Ling XIE Ping WANG Jianhua WU Department of Pediatric Dentistry Western District of Hefei Stomatological HospitalAnhui Medical University Department of Orthodontics Hefei Stomatological HospitalAnhui Medical University

Background Many cases of classⅡdeformities have been reported to be treated with prefabricated *** aim of this study was to distinguish the clinical effect of traditional custom-made appliances and prefabricated appliances in the treatment of classⅡdivision 1 ***,soft and hard tissue changes following treatment of classⅡdivision 1 malocclusion using the twin-block(TB)appliance was compared to that using the Myofunctional Research Company(MRC)appliance(K1+K2)combined with oral myofunctional treatment(OMT)(MRC+OMT).Methods The study included 22 children(6 boys and 16 girls aged 9–11 years)with classⅡdivision 1 malocclusion along with mandibular retrognathism with a 5–12 mm overjet,basic normal maxillary status,and stage 2 or 3 cervical vertebral maturation(CVM).Participants were randomly assigned into two groups,the TB group and the MRC+OMT group for 12 *** lateral cephalograms were used to assess skeletal,dental,and soft tissue changes from pre-to *** t-tests were used to compare the initial and final cephalometric status and tissue changes between the *** The TB and MRC+OMT groups resulted in different degrees of lateral changes;however,improvements of skeletal and soft tissue indices were significantly greater in the TB group than in the MRC+OMT *** TB was more effective than MRC+OMT in treating children aged 9–11 years with classⅡdivision 1 ***,further research using custom-made appliances with OMT is recommended,and further investigations are needed to confirm these findings.

关键词： classⅱdivision 1 treatment Twin-block Myofunctional Research Company Oral myofunctional treatment

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